Initial commit

322 files changed, 8057 insertions, 0 deletions

diff --git a/sys/vops/lz/alani.x b/sys/vops/lz/alani.x
new file mode 100644
index 00000000..28fb324e
--- /dev/null
+++ b/sys/vops/lz/alani.x
@@ -0,0 +1,19 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALAN -- Compute the logical AND of two vectors (generic).  The logical
+# output value is returned as an int.
+
+procedure alani (a, b, c, npix)
+
+int	a[ARB], b[ARB]
+int	c[ARB]
+
+int	npix, i
+
+begin
+	do i = 1, npix
+	    if (a[i] != 0 && b[i] != 0)
+		c[i] = YES
+	    else
+		c[i] = NO
+end
diff --git a/sys/vops/lz/alanki.x b/sys/vops/lz/alanki.x
new file mode 100644
index 00000000..a5523400
--- /dev/null
+++ b/sys/vops/lz/alanki.x
@@ -0,0 +1,19 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALANK -- Compute the logical AND of a vector and a constant (generic).
+# The logical output value is returned as an int.
+
+procedure alanki (a, b, c, npix)
+
+int	a[ARB], b
+int	c[ARB]
+
+int	npix, i
+
+begin
+	do i = 1, npix
+	    if (a[i] != 0 && b != 0)
+		c[i] = YES
+	    else
+		c[i] = NO
+end
diff --git a/sys/vops/lz/alankl.x b/sys/vops/lz/alankl.x
new file mode 100644
index 00000000..b223303c
--- /dev/null
+++ b/sys/vops/lz/alankl.x
@@ -0,0 +1,19 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALANK -- Compute the logical AND of a vector and a constant (generic).
+# The logical output value is returned as an int.
+
+procedure alankl (a, b, c, npix)
+
+long	a[ARB], b
+int	c[ARB]
+
+int	npix, i
+
+begin
+	do i = 1, npix
+	    if (a[i] != 0 && b != 0)
+		c[i] = YES
+	    else
+		c[i] = NO
+end
diff --git a/sys/vops/lz/alanks.x b/sys/vops/lz/alanks.x
new file mode 100644
index 00000000..f63e0371
--- /dev/null
+++ b/sys/vops/lz/alanks.x
@@ -0,0 +1,19 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALANK -- Compute the logical AND of a vector and a constant (generic).
+# The logical output value is returned as an int.
+
+procedure alanks (a, b, c, npix)
+
+short	a[ARB], b
+int	c[ARB]
+
+int	npix, i
+
+begin
+	do i = 1, npix
+	    if (a[i] != 0 && b != 0)
+		c[i] = YES
+	    else
+		c[i] = NO
+end
diff --git a/sys/vops/lz/alanl.x b/sys/vops/lz/alanl.x
new file mode 100644
index 00000000..b06304bd
--- /dev/null
+++ b/sys/vops/lz/alanl.x
@@ -0,0 +1,19 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALAN -- Compute the logical AND of two vectors (generic).  The logical
+# output value is returned as an int.
+
+procedure alanl (a, b, c, npix)
+
+long	a[ARB], b[ARB]
+int	c[ARB]
+
+int	npix, i
+
+begin
+	do i = 1, npix
+	    if (a[i] != 0 && b[i] != 0)
+		c[i] = YES
+	    else
+		c[i] = NO
+end
diff --git a/sys/vops/lz/alans.x b/sys/vops/lz/alans.x
new file mode 100644
index 00000000..b2ff25c5
--- /dev/null
+++ b/sys/vops/lz/alans.x
@@ -0,0 +1,19 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALAN -- Compute the logical AND of two vectors (generic).  The logical
+# output value is returned as an int.
+
+procedure alans (a, b, c, npix)
+
+short	a[ARB], b[ARB]
+int	c[ARB]
+
+int	npix, i
+
+begin
+	do i = 1, npix
+	    if (a[i] != 0 && b[i] != 0)
+		c[i] = YES
+	    else
+		c[i] = NO
+end
diff --git a/sys/vops/lz/alimc.x b/sys/vops/lz/alimc.x
new file mode 100644
index 00000000..6f05be93
--- /dev/null
+++ b/sys/vops/lz/alimc.x
@@ -0,0 +1,21 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALIM -- Compute the limits (minimum and maximum values) of a vector.
+
+procedure alimc (a, npix, minval, maxval)
+
+char	a[ARB], minval, maxval, value
+int	npix, i
+
+begin
+	minval = a[1]
+	maxval = a[1]
+
+	do i = 1, npix {
+	    value = a[i]
+		if (value < minval)
+		    minval = value
+		else if (value > maxval)
+		    maxval = value
+	}
+end
diff --git a/sys/vops/lz/alimd.x b/sys/vops/lz/alimd.x
new file mode 100644
index 00000000..2e56673d
--- /dev/null
+++ b/sys/vops/lz/alimd.x
@@ -0,0 +1,21 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALIM -- Compute the limits (minimum and maximum values) of a vector.
+
+procedure alimd (a, npix, minval, maxval)
+
+double	a[ARB], minval, maxval, value
+int	npix, i
+
+begin
+	minval = a[1]
+	maxval = a[1]
+
+	do i = 1, npix {
+	    value = a[i]
+		if (value < minval)
+		    minval = value
+		else if (value > maxval)
+		    maxval = value
+	}
+end
diff --git a/sys/vops/lz/alimi.x b/sys/vops/lz/alimi.x
new file mode 100644
index 00000000..0a043976
--- /dev/null
+++ b/sys/vops/lz/alimi.x
@@ -0,0 +1,21 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALIM -- Compute the limits (minimum and maximum values) of a vector.
+
+procedure alimi (a, npix, minval, maxval)
+
+int	a[ARB], minval, maxval, value
+int	npix, i
+
+begin
+	minval = a[1]
+	maxval = a[1]
+
+	do i = 1, npix {
+	    value = a[i]
+		if (value < minval)
+		    minval = value
+		else if (value > maxval)
+		    maxval = value
+	}
+end
diff --git a/sys/vops/lz/aliml.x b/sys/vops/lz/aliml.x
new file mode 100644
index 00000000..abbad1c5
--- /dev/null
+++ b/sys/vops/lz/aliml.x
@@ -0,0 +1,21 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALIM -- Compute the limits (minimum and maximum values) of a vector.
+
+procedure aliml (a, npix, minval, maxval)
+
+long	a[ARB], minval, maxval, value
+int	npix, i
+
+begin
+	minval = a[1]
+	maxval = a[1]
+
+	do i = 1, npix {
+	    value = a[i]
+		if (value < minval)
+		    minval = value
+		else if (value > maxval)
+		    maxval = value
+	}
+end
diff --git a/sys/vops/lz/alimr.x b/sys/vops/lz/alimr.x
new file mode 100644
index 00000000..6845f36c
--- /dev/null
+++ b/sys/vops/lz/alimr.x
@@ -0,0 +1,21 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALIM -- Compute the limits (minimum and maximum values) of a vector.
+
+procedure alimr (a, npix, minval, maxval)
+
+real	a[ARB], minval, maxval, value
+int	npix, i
+
+begin
+	minval = a[1]
+	maxval = a[1]
+
+	do i = 1, npix {
+	    value = a[i]
+		if (value < minval)
+		    minval = value
+		else if (value > maxval)
+		    maxval = value
+	}
+end
diff --git a/sys/vops/lz/alims.x b/sys/vops/lz/alims.x
new file mode 100644
index 00000000..71d5c498
--- /dev/null
+++ b/sys/vops/lz/alims.x
@@ -0,0 +1,21 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALIM -- Compute the limits (minimum and maximum values) of a vector.
+
+procedure alims (a, npix, minval, maxval)
+
+short	a[ARB], minval, maxval, value
+int	npix, i
+
+begin
+	minval = a[1]
+	maxval = a[1]
+
+	do i = 1, npix {
+	    value = a[i]
+		if (value < minval)
+		    minval = value
+		else if (value > maxval)
+		    maxval = value
+	}
+end
diff --git a/sys/vops/lz/alimx.x b/sys/vops/lz/alimx.x
new file mode 100644
index 00000000..93a7fe61
--- /dev/null
+++ b/sys/vops/lz/alimx.x
@@ -0,0 +1,21 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALIM -- Compute the limits (minimum and maximum values) of a vector.
+
+procedure alimx (a, npix, minval, maxval)
+
+complex	a[ARB], minval, maxval, value
+int	npix, i
+
+begin
+	minval = a[1]
+	maxval = a[1]
+
+	do i = 1, npix {
+	    value = a[i]
+		if (abs(value) < abs(minval))
+		    minval = value
+		else if (abs(value) > abs(maxval))
+		    maxval = value
+	}
+end
diff --git a/sys/vops/lz/allnd.x b/sys/vops/lz/allnd.x
new file mode 100644
index 00000000..82ae72bd
--- /dev/null
+++ b/sys/vops/lz/allnd.x
@@ -0,0 +1,23 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALLN -- Compute the natural logarithm of a vector (generic).  If the natural
+# logarithm is undefined (x <= 0) a user supplied function is called to get
+# the pixel value to be returned.
+
+procedure allnd (a, b, npix, errfcn)
+
+double	a[ARB], b[ARB]
+int	npix, i
+extern	errfcn()
+double	errfcn()
+errchk	errfcn
+
+begin
+	do i = 1, npix {
+		if (a[i] <= 0.0D0)
+		    b[i] = errfcn (a[i])
+		else {
+			b[i] = log (a[i])
+		}
+	}
+end
diff --git a/sys/vops/lz/allni.x b/sys/vops/lz/allni.x
new file mode 100644
index 00000000..9dc1bf4a
--- /dev/null
+++ b/sys/vops/lz/allni.x
@@ -0,0 +1,23 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALLN -- Compute the natural logarithm of a vector (generic).  If the natural
+# logarithm is undefined (x <= 0) a user supplied function is called to get
+# the pixel value to be returned.
+
+procedure allni (a, b, npix, errfcn)
+
+int	a[ARB], b[ARB]
+int	npix, i
+extern	errfcn()
+int	errfcn()
+errchk	errfcn
+
+begin
+	do i = 1, npix {
+		if (a[i] <= 0)
+		    b[i] = errfcn (a[i])
+		else {
+			b[i] = log (real (a[i]))
+		}
+	}
+end
diff --git a/sys/vops/lz/allnl.x b/sys/vops/lz/allnl.x
new file mode 100644
index 00000000..afc1a62e
--- /dev/null
+++ b/sys/vops/lz/allnl.x
@@ -0,0 +1,23 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALLN -- Compute the natural logarithm of a vector (generic).  If the natural
+# logarithm is undefined (x <= 0) a user supplied function is called to get
+# the pixel value to be returned.
+
+procedure allnl (a, b, npix, errfcn)
+
+long	a[ARB], b[ARB]
+int	npix, i
+extern	errfcn()
+long	errfcn()
+errchk	errfcn
+
+begin
+	do i = 1, npix {
+		if (a[i] <= 0)
+		    b[i] = errfcn (a[i])
+		else {
+			b[i] = log (double (a[i]))
+		}
+	}
+end
diff --git a/sys/vops/lz/allnr.x b/sys/vops/lz/allnr.x
new file mode 100644
index 00000000..469ce448
--- /dev/null
+++ b/sys/vops/lz/allnr.x
@@ -0,0 +1,23 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALLN -- Compute the natural logarithm of a vector (generic).  If the natural
+# logarithm is undefined (x <= 0) a user supplied function is called to get
+# the pixel value to be returned.
+
+procedure allnr (a, b, npix, errfcn)
+
+real	a[ARB], b[ARB]
+int	npix, i
+extern	errfcn()
+real	errfcn()
+errchk	errfcn
+
+begin
+	do i = 1, npix {
+		if (a[i] <= 0.0)
+		    b[i] = errfcn (a[i])
+		else {
+			b[i] = log (a[i])
+		}
+	}
+end
diff --git a/sys/vops/lz/allns.x b/sys/vops/lz/allns.x
new file mode 100644
index 00000000..3d968186
--- /dev/null
+++ b/sys/vops/lz/allns.x
@@ -0,0 +1,23 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALLN -- Compute the natural logarithm of a vector (generic).  If the natural
+# logarithm is undefined (x <= 0) a user supplied function is called to get
+# the pixel value to be returned.
+
+procedure allns (a, b, npix, errfcn)
+
+short	a[ARB], b[ARB]
+int	npix, i
+extern	errfcn()
+short	errfcn()
+errchk	errfcn
+
+begin
+	do i = 1, npix {
+		if (a[i] <= 0)
+		    b[i] = errfcn (a[i])
+		else {
+			b[i] = log (real (a[i]))
+		}
+	}
+end
diff --git a/sys/vops/lz/allnx.x b/sys/vops/lz/allnx.x
new file mode 100644
index 00000000..b4527117
--- /dev/null
+++ b/sys/vops/lz/allnx.x
@@ -0,0 +1,23 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALLN -- Compute the natural logarithm of a vector (generic).  If the natural
+# logarithm is undefined (x <= 0) a user supplied function is called to get
+# the pixel value to be returned.
+
+procedure allnx (a, b, npix, errfcn)
+
+complex	a[ARB], b[ARB]
+int	npix, i
+extern	errfcn()
+complex	errfcn()
+errchk	errfcn
+
+begin
+	do i = 1, npix {
+		if (a[i] == (0.0,0.0))
+		    b[i] = errfcn (a[i])
+		else {
+			b[i] = log (a[i])
+		}
+	}
+end
diff --git a/sys/vops/lz/alogd.x b/sys/vops/lz/alogd.x
new file mode 100644
index 00000000..b5f7b78f
--- /dev/null
+++ b/sys/vops/lz/alogd.x
@@ -0,0 +1,24 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALOG -- Compute the logarithm to the base 10 of a vector (generic).  If the
+# logarithm is undefined (x <= 0) a user supplied function is called to get
+# the function value.
+
+procedure alogd (a, b, npix, errfcn)
+
+double	a[ARB], b[ARB]
+int	npix, i
+extern	errfcn()
+double	errfcn()
+errchk	errfcn
+
+begin
+	do i = 1, npix {
+		if (a[i] <= 0.0D0)
+		    b[i] = errfcn (a[i])
+		else {
+		    # Note Fortran standard forbids log10(cplx).
+			b[i] = log10 (a[i])
+		}
+	}
+end
diff --git a/sys/vops/lz/alogi.x b/sys/vops/lz/alogi.x
new file mode 100644
index 00000000..294289c5
--- /dev/null
+++ b/sys/vops/lz/alogi.x
@@ -0,0 +1,24 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALOG -- Compute the logarithm to the base 10 of a vector (generic).  If the
+# logarithm is undefined (x <= 0) a user supplied function is called to get
+# the function value.
+
+procedure alogi (a, b, npix, errfcn)
+
+int	a[ARB], b[ARB]
+int	npix, i
+extern	errfcn()
+int	errfcn()
+errchk	errfcn
+
+begin
+	do i = 1, npix {
+		if (a[i] <= 0)
+		    b[i] = errfcn (a[i])
+		else {
+		    # Note Fortran standard forbids log10(cplx).
+			b[i] = log10 (real (a[i]))
+		}
+	}
+end
diff --git a/sys/vops/lz/alogl.x b/sys/vops/lz/alogl.x
new file mode 100644
index 00000000..1af0e2f5
--- /dev/null
+++ b/sys/vops/lz/alogl.x
@@ -0,0 +1,24 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALOG -- Compute the logarithm to the base 10 of a vector (generic).  If the
+# logarithm is undefined (x <= 0) a user supplied function is called to get
+# the function value.
+
+procedure alogl (a, b, npix, errfcn)
+
+long	a[ARB], b[ARB]
+int	npix, i
+extern	errfcn()
+long	errfcn()
+errchk	errfcn
+
+begin
+	do i = 1, npix {
+		if (a[i] <= 0)
+		    b[i] = errfcn (a[i])
+		else {
+		    # Note Fortran standard forbids log10(cplx).
+			b[i] = log10 (double (a[i]))
+		}
+	}
+end
diff --git a/sys/vops/lz/alogr.x b/sys/vops/lz/alogr.x
new file mode 100644
index 00000000..049f7cc7
--- /dev/null
+++ b/sys/vops/lz/alogr.x
@@ -0,0 +1,24 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALOG -- Compute the logarithm to the base 10 of a vector (generic).  If the
+# logarithm is undefined (x <= 0) a user supplied function is called to get
+# the function value.
+
+procedure alogr (a, b, npix, errfcn)
+
+real	a[ARB], b[ARB]
+int	npix, i
+extern	errfcn()
+real	errfcn()
+errchk	errfcn
+
+begin
+	do i = 1, npix {
+		if (a[i] <= 0.0)
+		    b[i] = errfcn (a[i])
+		else {
+		    # Note Fortran standard forbids log10(cplx).
+			b[i] = log10 (a[i])
+		}
+	}
+end
diff --git a/sys/vops/lz/alogs.x b/sys/vops/lz/alogs.x
new file mode 100644
index 00000000..861185a5
--- /dev/null
+++ b/sys/vops/lz/alogs.x
@@ -0,0 +1,24 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALOG -- Compute the logarithm to the base 10 of a vector (generic).  If the
+# logarithm is undefined (x <= 0) a user supplied function is called to get
+# the function value.
+
+procedure alogs (a, b, npix, errfcn)
+
+short	a[ARB], b[ARB]
+int	npix, i
+extern	errfcn()
+short	errfcn()
+errchk	errfcn
+
+begin
+	do i = 1, npix {
+		if (a[i] <= 0)
+		    b[i] = errfcn (a[i])
+		else {
+		    # Note Fortran standard forbids log10(cplx).
+			b[i] = log10 (real (a[i]))
+		}
+	}
+end
diff --git a/sys/vops/lz/alogx.x b/sys/vops/lz/alogx.x
new file mode 100644
index 00000000..adb78cc6
--- /dev/null
+++ b/sys/vops/lz/alogx.x
@@ -0,0 +1,24 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALOG -- Compute the logarithm to the base 10 of a vector (generic).  If the
+# logarithm is undefined (x <= 0) a user supplied function is called to get
+# the function value.
+
+procedure alogx (a, b, npix, errfcn)
+
+complex	a[ARB], b[ARB]
+int	npix, i
+extern	errfcn()
+complex	errfcn()
+errchk	errfcn
+
+begin
+	do i = 1, npix {
+		if (a[i] == (0.0,0.0))
+		    b[i] = errfcn (a[i])
+		else {
+		    # Note Fortran standard forbids log10(cplx).
+			b[i] = log10 (real (a[i]))
+		}
+	}
+end
diff --git a/sys/vops/lz/alori.x b/sys/vops/lz/alori.x
new file mode 100644
index 00000000..07fefc59
--- /dev/null
+++ b/sys/vops/lz/alori.x
@@ -0,0 +1,19 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALOR -- Compute the logical OR of a vector and a constant (generic).
+# The logical output value is returned as an int.
+
+procedure alori (a, b, c, npix)
+
+int	a[ARB], b[ARB]
+int	c[ARB]
+
+int	npix, i
+
+begin
+	do i = 1, npix
+	    if (a[i] != 0 || b[i] != 0)
+		c[i] = YES
+	    else
+		c[i] = NO
+end
diff --git a/sys/vops/lz/alorki.x b/sys/vops/lz/alorki.x
new file mode 100644
index 00000000..1fa2089e
--- /dev/null
+++ b/sys/vops/lz/alorki.x
@@ -0,0 +1,19 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALORK -- Compute the logical OR of a vector and a constant (generic).
+# The logical output value is returned as an int.
+
+procedure alorki (a, b, c, npix)
+
+int	a[ARB], b
+int	c[ARB]
+
+int	npix, i
+
+begin
+	do i = 1, npix
+	    if (a[i] != 0 || b != 0)
+		c[i] = YES
+	    else
+		c[i] = NO
+end
diff --git a/sys/vops/lz/alorkl.x b/sys/vops/lz/alorkl.x
new file mode 100644
index 00000000..eedcb247
--- /dev/null
+++ b/sys/vops/lz/alorkl.x
@@ -0,0 +1,19 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALORK -- Compute the logical OR of a vector and a constant (generic).
+# The logical output value is returned as an int.
+
+procedure alorkl (a, b, c, npix)
+
+long	a[ARB], b
+int	c[ARB]
+
+int	npix, i
+
+begin
+	do i = 1, npix
+	    if (a[i] != 0 || b != 0)
+		c[i] = YES
+	    else
+		c[i] = NO
+end
diff --git a/sys/vops/lz/alorks.x b/sys/vops/lz/alorks.x
new file mode 100644
index 00000000..a38924c9
--- /dev/null
+++ b/sys/vops/lz/alorks.x
@@ -0,0 +1,19 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALORK -- Compute the logical OR of a vector and a constant (generic).
+# The logical output value is returned as an int.
+
+procedure alorks (a, b, c, npix)
+
+short	a[ARB], b
+int	c[ARB]
+
+int	npix, i
+
+begin
+	do i = 1, npix
+	    if (a[i] != 0 || b != 0)
+		c[i] = YES
+	    else
+		c[i] = NO
+end
diff --git a/sys/vops/lz/alorl.x b/sys/vops/lz/alorl.x
new file mode 100644
index 00000000..bd23bcb1
--- /dev/null
+++ b/sys/vops/lz/alorl.x
@@ -0,0 +1,19 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALOR -- Compute the logical OR of a vector and a constant (generic).
+# The logical output value is returned as an int.
+
+procedure alorl (a, b, c, npix)
+
+long	a[ARB], b[ARB]
+int	c[ARB]
+
+int	npix, i
+
+begin
+	do i = 1, npix
+	    if (a[i] != 0 || b[i] != 0)
+		c[i] = YES
+	    else
+		c[i] = NO
+end
diff --git a/sys/vops/lz/alors.x b/sys/vops/lz/alors.x
new file mode 100644
index 00000000..a87c5915
--- /dev/null
+++ b/sys/vops/lz/alors.x
@@ -0,0 +1,19 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALOR -- Compute the logical OR of a vector and a constant (generic).
+# The logical output value is returned as an int.
+
+procedure alors (a, b, c, npix)
+
+short	a[ARB], b[ARB]
+int	c[ARB]
+
+int	npix, i
+
+begin
+	do i = 1, npix
+	    if (a[i] != 0 || b[i] != 0)
+		c[i] = YES
+	    else
+		c[i] = NO
+end
diff --git a/sys/vops/lz/alovc.x b/sys/vops/lz/alovc.x
new file mode 100644
index 00000000..39b5ff34
--- /dev/null
+++ b/sys/vops/lz/alovc.x
@@ -0,0 +1,22 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALOV -- Compute the low value (minimum) of a vector.
+
+char procedure alovc (a, npix)
+
+char	a[ARB]
+int	npix
+char	low, pixval
+int	i
+
+begin
+	low = a[1]
+
+	do i = 1, npix {
+	    pixval = a[i]
+	    if (pixval < low)
+		low = pixval
+	}
+
+	return (low)
+end
diff --git a/sys/vops/lz/alovd.x b/sys/vops/lz/alovd.x
new file mode 100644
index 00000000..e5de175b
--- /dev/null
+++ b/sys/vops/lz/alovd.x
@@ -0,0 +1,22 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALOV -- Compute the low value (minimum) of a vector.
+
+double procedure alovd (a, npix)
+
+double	a[ARB]
+int	npix
+double	low, pixval
+int	i
+
+begin
+	low = a[1]
+
+	do i = 1, npix {
+	    pixval = a[i]
+	    if (pixval < low)
+		low = pixval
+	}
+
+	return (low)
+end
diff --git a/sys/vops/lz/alovi.x b/sys/vops/lz/alovi.x
new file mode 100644
index 00000000..f2045c11
--- /dev/null
+++ b/sys/vops/lz/alovi.x
@@ -0,0 +1,22 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALOV -- Compute the low value (minimum) of a vector.
+
+int procedure alovi (a, npix)
+
+int	a[ARB]
+int	npix
+int	low, pixval
+int	i
+
+begin
+	low = a[1]
+
+	do i = 1, npix {
+	    pixval = a[i]
+	    if (pixval < low)
+		low = pixval
+	}
+
+	return (low)
+end
diff --git a/sys/vops/lz/alovl.x b/sys/vops/lz/alovl.x
new file mode 100644
index 00000000..9fcf4f6d
--- /dev/null
+++ b/sys/vops/lz/alovl.x
@@ -0,0 +1,22 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALOV -- Compute the low value (minimum) of a vector.
+
+long procedure alovl (a, npix)
+
+long	a[ARB]
+int	npix
+long	low, pixval
+int	i
+
+begin
+	low = a[1]
+
+	do i = 1, npix {
+	    pixval = a[i]
+	    if (pixval < low)
+		low = pixval
+	}
+
+	return (low)
+end
diff --git a/sys/vops/lz/alovr.x b/sys/vops/lz/alovr.x
new file mode 100644
index 00000000..87e08917
--- /dev/null
+++ b/sys/vops/lz/alovr.x
@@ -0,0 +1,22 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALOV -- Compute the low value (minimum) of a vector.
+
+real procedure alovr (a, npix)
+
+real	a[ARB]
+int	npix
+real	low, pixval
+int	i
+
+begin
+	low = a[1]
+
+	do i = 1, npix {
+	    pixval = a[i]
+	    if (pixval < low)
+		low = pixval
+	}
+
+	return (low)
+end
diff --git a/sys/vops/lz/alovs.x b/sys/vops/lz/alovs.x
new file mode 100644
index 00000000..30a83bed
--- /dev/null
+++ b/sys/vops/lz/alovs.x
@@ -0,0 +1,22 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALOV -- Compute the low value (minimum) of a vector.
+
+short procedure alovs (a, npix)
+
+short	a[ARB]
+int	npix
+short	low, pixval
+int	i
+
+begin
+	low = a[1]
+
+	do i = 1, npix {
+	    pixval = a[i]
+	    if (pixval < low)
+		low = pixval
+	}
+
+	return (low)
+end
diff --git a/sys/vops/lz/alovx.x b/sys/vops/lz/alovx.x
new file mode 100644
index 00000000..c0d17deb
--- /dev/null
+++ b/sys/vops/lz/alovx.x
@@ -0,0 +1,26 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALOV -- Compute the low value (minimum) of a vector.
+
+complex procedure alovx (a, npix)
+
+complex	a[ARB]
+int	npix
+complex	low, pixval
+real	abs_low
+int	i
+
+begin
+	low = a[1]
+	abs_low = abs (low)
+
+	do i = 1, npix {
+	    pixval = a[i]
+	    if (abs (pixval) < abs_low) {
+		low = pixval
+		abs_low = abs (low)
+	    }
+	}
+
+	return (low)
+end
diff --git a/sys/vops/lz/altad.x b/sys/vops/lz/altad.x
new file mode 100644
index 00000000..05fca620
--- /dev/null
+++ b/sys/vops/lz/altad.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALTA -- Linearly map a vector into another vector of the same datatype.
+#	b[i] = (a[i] + k1) * k2
+
+procedure altad (a, b, npix, k1, k2)
+
+double	a[ARB], b[ARB]
+double	k1, k2
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = (a[i] + k1) * k2
+end
diff --git a/sys/vops/lz/altai.x b/sys/vops/lz/altai.x
new file mode 100644
index 00000000..62576263
--- /dev/null
+++ b/sys/vops/lz/altai.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALTA -- Linearly map a vector into another vector of the same datatype.
+#	b[i] = (a[i] + k1) * k2
+
+procedure altai (a, b, npix, k1, k2)
+
+int	a[ARB], b[ARB]
+real	k1, k2
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = (a[i] + k1) * k2
+end
diff --git a/sys/vops/lz/altal.x b/sys/vops/lz/altal.x
new file mode 100644
index 00000000..d95ca1f4
--- /dev/null
+++ b/sys/vops/lz/altal.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALTA -- Linearly map a vector into another vector of the same datatype.
+#	b[i] = (a[i] + k1) * k2
+
+procedure altal (a, b, npix, k1, k2)
+
+long	a[ARB], b[ARB]
+double	k1, k2
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = (a[i] + k1) * k2
+end
diff --git a/sys/vops/lz/altar.x b/sys/vops/lz/altar.x
new file mode 100644
index 00000000..031be04d
--- /dev/null
+++ b/sys/vops/lz/altar.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALTA -- Linearly map a vector into another vector of the same datatype.
+#	b[i] = (a[i] + k1) * k2
+
+procedure altar (a, b, npix, k1, k2)
+
+real	a[ARB], b[ARB]
+real	k1, k2
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = (a[i] + k1) * k2
+end
diff --git a/sys/vops/lz/altas.x b/sys/vops/lz/altas.x
new file mode 100644
index 00000000..7b59d86b
--- /dev/null
+++ b/sys/vops/lz/altas.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALTA -- Linearly map a vector into another vector of the same datatype.
+#	b[i] = (a[i] + k1) * k2
+
+procedure altas (a, b, npix, k1, k2)
+
+short	a[ARB], b[ARB]
+real	k1, k2
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = (a[i] + k1) * k2
+end
diff --git a/sys/vops/lz/altax.x b/sys/vops/lz/altax.x
new file mode 100644
index 00000000..7d71e97d
--- /dev/null
+++ b/sys/vops/lz/altax.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALTA -- Linearly map a vector into another vector of the same datatype.
+#	b[i] = (a[i] + k1) * k2
+
+procedure altax (a, b, npix, k1, k2)
+
+complex	a[ARB], b[ARB]
+real	k1, k2
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = (a[i] + k1) * k2
+end
diff --git a/sys/vops/lz/altmd.x b/sys/vops/lz/altmd.x
new file mode 100644
index 00000000..c8a7296b
--- /dev/null
+++ b/sys/vops/lz/altmd.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALTM -- Linearly map a vector into another vector of the same datatype.
+#	b[i] = (a[i] * k1) + k2
+
+procedure altmd (a, b, npix, k1, k2)
+
+double	a[ARB], b[ARB]
+double	k1, k2
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = (a[i] * k1) + k2
+end
diff --git a/sys/vops/lz/altmi.x b/sys/vops/lz/altmi.x
new file mode 100644
index 00000000..64cb93c4
--- /dev/null
+++ b/sys/vops/lz/altmi.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALTM -- Linearly map a vector into another vector of the same datatype.
+#	b[i] = (a[i] * k1) + k2
+
+procedure altmi (a, b, npix, k1, k2)
+
+int	a[ARB], b[ARB]
+real	k1, k2
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = (a[i] * k1) + k2
+end
diff --git a/sys/vops/lz/altml.x b/sys/vops/lz/altml.x
new file mode 100644
index 00000000..a9727472
--- /dev/null
+++ b/sys/vops/lz/altml.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALTM -- Linearly map a vector into another vector of the same datatype.
+#	b[i] = (a[i] * k1) + k2
+
+procedure altml (a, b, npix, k1, k2)
+
+long	a[ARB], b[ARB]
+double	k1, k2
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = (a[i] * k1) + k2
+end
diff --git a/sys/vops/lz/altmr.x b/sys/vops/lz/altmr.x
new file mode 100644
index 00000000..a088b75d
--- /dev/null
+++ b/sys/vops/lz/altmr.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALTM -- Linearly map a vector into another vector of the same datatype.
+#	b[i] = (a[i] * k1) + k2
+
+procedure altmr (a, b, npix, k1, k2)
+
+real	a[ARB], b[ARB]
+real	k1, k2
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = (a[i] * k1) + k2
+end
diff --git a/sys/vops/lz/altms.x b/sys/vops/lz/altms.x
new file mode 100644
index 00000000..292db9dc
--- /dev/null
+++ b/sys/vops/lz/altms.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALTM -- Linearly map a vector into another vector of the same datatype.
+#	b[i] = (a[i] * k1) + k2
+
+procedure altms (a, b, npix, k1, k2)
+
+short	a[ARB], b[ARB]
+real	k1, k2
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = (a[i] * k1) + k2
+end
diff --git a/sys/vops/lz/altmx.x b/sys/vops/lz/altmx.x
new file mode 100644
index 00000000..fca0e274
--- /dev/null
+++ b/sys/vops/lz/altmx.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALTM -- Linearly map a vector into another vector of the same datatype.
+#	b[i] = (a[i] * k1) + k2
+
+procedure altmx (a, b, npix, k1, k2)
+
+complex	a[ARB], b[ARB]
+real	k1, k2
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = (a[i] * k1) + k2
+end
diff --git a/sys/vops/lz/altrd.x b/sys/vops/lz/altrd.x
new file mode 100644
index 00000000..57e877b0
--- /dev/null
+++ b/sys/vops/lz/altrd.x
@@ -0,0 +1,16 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALTR -- Linearly map a vector into another vector of the same datatype.
+# This is the most general form.  See also ALTA and ALTM.
+#	b[i] = (a[i] + k1) * k2 + k3
+
+procedure altrd (a, b, npix, k1, k2, k3)
+
+double	a[ARB], b[ARB]
+double	k1, k2, k3
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = (a[i] + k1) * k2 + k3
+end
diff --git a/sys/vops/lz/altri.x b/sys/vops/lz/altri.x
new file mode 100644
index 00000000..5ef70e85
--- /dev/null
+++ b/sys/vops/lz/altri.x
@@ -0,0 +1,16 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALTR -- Linearly map a vector into another vector of the same datatype.
+# This is the most general form.  See also ALTA and ALTM.
+#	b[i] = (a[i] + k1) * k2 + k3
+
+procedure altri (a, b, npix, k1, k2, k3)
+
+int	a[ARB], b[ARB]
+real	k1, k2, k3
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = (a[i] + k1) * k2 + k3
+end
diff --git a/sys/vops/lz/altrl.x b/sys/vops/lz/altrl.x
new file mode 100644
index 00000000..7c3d48b8
--- /dev/null
+++ b/sys/vops/lz/altrl.x
@@ -0,0 +1,16 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALTR -- Linearly map a vector into another vector of the same datatype.
+# This is the most general form.  See also ALTA and ALTM.
+#	b[i] = (a[i] + k1) * k2 + k3
+
+procedure altrl (a, b, npix, k1, k2, k3)
+
+long	a[ARB], b[ARB]
+double	k1, k2, k3
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = (a[i] + k1) * k2 + k3
+end
diff --git a/sys/vops/lz/altrr.x b/sys/vops/lz/altrr.x
new file mode 100644
index 00000000..f78522f5
--- /dev/null
+++ b/sys/vops/lz/altrr.x
@@ -0,0 +1,16 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALTR -- Linearly map a vector into another vector of the same datatype.
+# This is the most general form.  See also ALTA and ALTM.
+#	b[i] = (a[i] + k1) * k2 + k3
+
+procedure altrr (a, b, npix, k1, k2, k3)
+
+real	a[ARB], b[ARB]
+real	k1, k2, k3
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = (a[i] + k1) * k2 + k3
+end
diff --git a/sys/vops/lz/altrs.x b/sys/vops/lz/altrs.x
new file mode 100644
index 00000000..50458a82
--- /dev/null
+++ b/sys/vops/lz/altrs.x
@@ -0,0 +1,16 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALTR -- Linearly map a vector into another vector of the same datatype.
+# This is the most general form.  See also ALTA and ALTM.
+#	b[i] = (a[i] + k1) * k2 + k3
+
+procedure altrs (a, b, npix, k1, k2, k3)
+
+short	a[ARB], b[ARB]
+real	k1, k2, k3
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = (a[i] + k1) * k2 + k3
+end
diff --git a/sys/vops/lz/altrx.x b/sys/vops/lz/altrx.x
new file mode 100644
index 00000000..d23ad236
--- /dev/null
+++ b/sys/vops/lz/altrx.x
@@ -0,0 +1,16 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALTR -- Linearly map a vector into another vector of the same datatype.
+# This is the most general form.  See also ALTA and ALTM.
+#	b[i] = (a[i] + k1) * k2 + k3
+
+procedure altrx (a, b, npix, k1, k2, k3)
+
+complex	a[ARB], b[ARB]
+real	k1, k2, k3
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = (a[i] + k1) * k2 + k3
+end
diff --git a/sys/vops/lz/aluid.x b/sys/vops/lz/aluid.x
new file mode 100644
index 00000000..d529ba77
--- /dev/null
+++ b/sys/vops/lz/aluid.x
@@ -0,0 +1,30 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<mach.h>
+
+# ALUI -- Vector lookup and interpolate (linear).  B[i] = A(X[i]).
+# No bounds checking is performed, but the case A(X[i])=NPIX (no fractional
+# part) is recognized and will not cause a reference off the right end of the
+# array.  This is done in a way which will also cause execution to be faster
+# when the sample points are integral, i.e., fall exactly on data points in
+# the input array.
+
+procedure aluid (a, b, x, npix)
+
+double	a[ARB], b[ARB]
+real	x[ARB], fraction, tol
+int	npix, i, left_pixel
+
+begin
+	tol = EPSILONR * 5.0
+
+	do i = 1, npix {
+	    left_pixel = int (x[i])
+	    fraction = x[i] - real(left_pixel)
+	    if (fraction < tol)
+		b[i] = a[left_pixel]
+	    else
+		b[i] = a[left_pixel] * (1.0 - fraction) +
+		       a[left_pixel+1] * fraction
+	}
+end
diff --git a/sys/vops/lz/aluii.x b/sys/vops/lz/aluii.x
new file mode 100644
index 00000000..67d63575
--- /dev/null
+++ b/sys/vops/lz/aluii.x
@@ -0,0 +1,30 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<mach.h>
+
+# ALUI -- Vector lookup and interpolate (linear).  B[i] = A(X[i]).
+# No bounds checking is performed, but the case A(X[i])=NPIX (no fractional
+# part) is recognized and will not cause a reference off the right end of the
+# array.  This is done in a way which will also cause execution to be faster
+# when the sample points are integral, i.e., fall exactly on data points in
+# the input array.
+
+procedure aluii (a, b, x, npix)
+
+int	a[ARB], b[ARB]
+real	x[ARB], fraction, tol
+int	npix, i, left_pixel
+
+begin
+	tol = EPSILONR * 5.0
+
+	do i = 1, npix {
+	    left_pixel = int (x[i])
+	    fraction = x[i] - real(left_pixel)
+	    if (fraction < tol)
+		b[i] = a[left_pixel]
+	    else
+		b[i] = a[left_pixel] * (1.0 - fraction) +
+		       a[left_pixel+1] * fraction
+	}
+end
diff --git a/sys/vops/lz/aluil.x b/sys/vops/lz/aluil.x
new file mode 100644
index 00000000..177fb4e6
--- /dev/null
+++ b/sys/vops/lz/aluil.x
@@ -0,0 +1,30 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<mach.h>
+
+# ALUI -- Vector lookup and interpolate (linear).  B[i] = A(X[i]).
+# No bounds checking is performed, but the case A(X[i])=NPIX (no fractional
+# part) is recognized and will not cause a reference off the right end of the
+# array.  This is done in a way which will also cause execution to be faster
+# when the sample points are integral, i.e., fall exactly on data points in
+# the input array.
+
+procedure aluil (a, b, x, npix)
+
+long	a[ARB], b[ARB]
+real	x[ARB], fraction, tol
+int	npix, i, left_pixel
+
+begin
+	tol = EPSILONR * 5.0
+
+	do i = 1, npix {
+	    left_pixel = int (x[i])
+	    fraction = x[i] - real(left_pixel)
+	    if (fraction < tol)
+		b[i] = a[left_pixel]
+	    else
+		b[i] = a[left_pixel] * (1.0 - fraction) +
+		       a[left_pixel+1] * fraction
+	}
+end
diff --git a/sys/vops/lz/aluir.x b/sys/vops/lz/aluir.x
new file mode 100644
index 00000000..33ef1e4b
--- /dev/null
+++ b/sys/vops/lz/aluir.x
@@ -0,0 +1,30 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<mach.h>
+
+# ALUI -- Vector lookup and interpolate (linear).  B[i] = A(X[i]).
+# No bounds checking is performed, but the case A(X[i])=NPIX (no fractional
+# part) is recognized and will not cause a reference off the right end of the
+# array.  This is done in a way which will also cause execution to be faster
+# when the sample points are integral, i.e., fall exactly on data points in
+# the input array.
+
+procedure aluir (a, b, x, npix)
+
+real	a[ARB], b[ARB]
+real	x[ARB], fraction, tol
+int	npix, i, left_pixel
+
+begin
+	tol = EPSILONR * 5.0
+
+	do i = 1, npix {
+	    left_pixel = int (x[i])
+	    fraction = x[i] - real(left_pixel)
+	    if (fraction < tol)
+		b[i] = a[left_pixel]
+	    else
+		b[i] = a[left_pixel] * (1.0 - fraction) +
+		       a[left_pixel+1] * fraction
+	}
+end
diff --git a/sys/vops/lz/aluis.x b/sys/vops/lz/aluis.x
new file mode 100644
index 00000000..d64dfa1a
--- /dev/null
+++ b/sys/vops/lz/aluis.x
@@ -0,0 +1,30 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<mach.h>
+
+# ALUI -- Vector lookup and interpolate (linear).  B[i] = A(X[i]).
+# No bounds checking is performed, but the case A(X[i])=NPIX (no fractional
+# part) is recognized and will not cause a reference off the right end of the
+# array.  This is done in a way which will also cause execution to be faster
+# when the sample points are integral, i.e., fall exactly on data points in
+# the input array.
+
+procedure aluis (a, b, x, npix)
+
+short	a[ARB], b[ARB]
+real	x[ARB], fraction, tol
+int	npix, i, left_pixel
+
+begin
+	tol = EPSILONR * 5.0
+
+	do i = 1, npix {
+	    left_pixel = int (x[i])
+	    fraction = x[i] - real(left_pixel)
+	    if (fraction < tol)
+		b[i] = a[left_pixel]
+	    else
+		b[i] = a[left_pixel] * (1.0 - fraction) +
+		       a[left_pixel+1] * fraction
+	}
+end
diff --git a/sys/vops/lz/alutc.x b/sys/vops/lz/alutc.x
new file mode 100644
index 00000000..06d753fe
--- /dev/null
+++ b/sys/vops/lz/alutc.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALUT -- Map an array using table lookup.  Note that an input value of zero
+# indexes the first element of the lookup table.  No bounds checking is
+# performed.
+
+procedure alutc (a, b, npix, lut)
+
+char	a[ARB]
+
+char	b[ARB]				# output data array
+char	lut[ARB]			# lookup table
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = lut[a[i]+1]
+end
diff --git a/sys/vops/lz/alutd.x b/sys/vops/lz/alutd.x
new file mode 100644
index 00000000..d1e22aea
--- /dev/null
+++ b/sys/vops/lz/alutd.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALUT -- Map an array using table lookup.  Note that an input value of zero
+# indexes the first element of the lookup table.  No bounds checking is
+# performed.
+
+procedure alutd (a, b, npix, lut)
+
+int	a[ARB]				# input array of indices
+
+double	b[ARB]				# output data array
+double	lut[ARB]			# lookup table
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = lut[a[i]+1]
+end
diff --git a/sys/vops/lz/aluti.x b/sys/vops/lz/aluti.x
new file mode 100644
index 00000000..ba3099b3
--- /dev/null
+++ b/sys/vops/lz/aluti.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALUT -- Map an array using table lookup.  Note that an input value of zero
+# indexes the first element of the lookup table.  No bounds checking is
+# performed.
+
+procedure aluti (a, b, npix, lut)
+
+int	a[ARB]
+
+int	b[ARB]				# output data array
+int	lut[ARB]			# lookup table
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = lut[a[i]+1]
+end
diff --git a/sys/vops/lz/alutl.x b/sys/vops/lz/alutl.x
new file mode 100644
index 00000000..ccc95ab5
--- /dev/null
+++ b/sys/vops/lz/alutl.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALUT -- Map an array using table lookup.  Note that an input value of zero
+# indexes the first element of the lookup table.  No bounds checking is
+# performed.
+
+procedure alutl (a, b, npix, lut)
+
+long	a[ARB]
+
+long	b[ARB]				# output data array
+long	lut[ARB]			# lookup table
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = lut[a[i]+1]
+end
diff --git a/sys/vops/lz/alutr.x b/sys/vops/lz/alutr.x
new file mode 100644
index 00000000..a72cc11f
--- /dev/null
+++ b/sys/vops/lz/alutr.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALUT -- Map an array using table lookup.  Note that an input value of zero
+# indexes the first element of the lookup table.  No bounds checking is
+# performed.
+
+procedure alutr (a, b, npix, lut)
+
+int	a[ARB]				# input array of indices
+
+real	b[ARB]				# output data array
+real	lut[ARB]			# lookup table
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = lut[a[i]+1]
+end
diff --git a/sys/vops/lz/aluts.x b/sys/vops/lz/aluts.x
new file mode 100644
index 00000000..8af08735
--- /dev/null
+++ b/sys/vops/lz/aluts.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ALUT -- Map an array using table lookup.  Note that an input value of zero
+# indexes the first element of the lookup table.  No bounds checking is
+# performed.
+
+procedure aluts (a, b, npix, lut)
+
+short	a[ARB]
+
+short	b[ARB]				# output data array
+short	lut[ARB]			# lookup table
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = lut[a[i]+1]
+end
diff --git a/sys/vops/lz/amagd.x b/sys/vops/lz/amagd.x
new file mode 100644
index 00000000..d4238cfd
--- /dev/null
+++ b/sys/vops/lz/amagd.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMAG -- Return the magnitude of two vectors.
+
+procedure amagd (a, b, c, npix)
+
+double	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+		c[i] = sqrt (double(a[i] ** 2) + double(b[i] ** 2))
+end
diff --git a/sys/vops/lz/amagi.x b/sys/vops/lz/amagi.x
new file mode 100644
index 00000000..9bddef17
--- /dev/null
+++ b/sys/vops/lz/amagi.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMAG -- Return the magnitude of two vectors.
+
+procedure amagi (a, b, c, npix)
+
+int	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+		c[i] = sqrt (real(a[i] ** 2) + real(b[i] ** 2))
+end
diff --git a/sys/vops/lz/amagl.x b/sys/vops/lz/amagl.x
new file mode 100644
index 00000000..31fd69a0
--- /dev/null
+++ b/sys/vops/lz/amagl.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMAG -- Return the magnitude of two vectors.
+
+procedure amagl (a, b, c, npix)
+
+long	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+		c[i] = sqrt (double(a[i] ** 2) + double(b[i] ** 2))
+end
diff --git a/sys/vops/lz/amagr.x b/sys/vops/lz/amagr.x
new file mode 100644
index 00000000..2db3c085
--- /dev/null
+++ b/sys/vops/lz/amagr.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMAG -- Return the magnitude of two vectors.
+
+procedure amagr (a, b, c, npix)
+
+real	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+		c[i] = sqrt (real(a[i] ** 2) + real(b[i] ** 2))
+end
diff --git a/sys/vops/lz/amags.x b/sys/vops/lz/amags.x
new file mode 100644
index 00000000..7f86bc75
--- /dev/null
+++ b/sys/vops/lz/amags.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMAG -- Return the magnitude of two vectors.
+
+procedure amags (a, b, c, npix)
+
+short	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+		c[i] = sqrt (real(a[i] ** 2) + real(b[i] ** 2))
+end
diff --git a/sys/vops/lz/amagx.x b/sys/vops/lz/amagx.x
new file mode 100644
index 00000000..2319394d
--- /dev/null
+++ b/sys/vops/lz/amagx.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMAG -- Return the magnitude of two vectors.
+
+procedure amagx (a, b, c, npix)
+
+complex	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+		c[i] = sqrt (a[i] ** 2 + b[i] ** 2)
+end
diff --git a/sys/vops/lz/amapd.x b/sys/vops/lz/amapd.x
new file mode 100644
index 00000000..8f766793
--- /dev/null
+++ b/sys/vops/lz/amapd.x
@@ -0,0 +1,30 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMAP -- Vector linear transformation.  Map the range of pixel values
+# a1,a2 from a into the range b1,b2 in b.  It is assumed that a1 < a2
+# and b1 < b2.
+
+procedure amapd (a, b, npix, a1, a2, b1, b2)
+
+double	a[ARB], b[ARB]
+double	a1, a2, b1, b2
+
+double	minout, maxout, aoff, boff, pixval
+
+double	scalar
+
+int	npix, i
+
+begin
+	    scalar = (double (b2) - double (b1)) / (double (a2) - double (a1))
+
+	minout = min (b1, b2)
+	maxout = max (b1, b2)
+	aoff = a1
+	boff = b1
+
+	do i = 1, npix {
+	    pixval = (a[i] - aoff) * scalar
+	    b[i] = max(minout, min(maxout, pixval + boff))
+	}
+end
diff --git a/sys/vops/lz/amapi.x b/sys/vops/lz/amapi.x
new file mode 100644
index 00000000..d559a130
--- /dev/null
+++ b/sys/vops/lz/amapi.x
@@ -0,0 +1,30 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMAP -- Vector linear transformation.  Map the range of pixel values
+# a1,a2 from a into the range b1,b2 in b.  It is assumed that a1 < a2
+# and b1 < b2.
+
+procedure amapi (a, b, npix, a1, a2, b1, b2)
+
+int	a[ARB], b[ARB]
+int	a1, a2, b1, b2
+
+long	minout, maxout, aoff, boff, pixval
+
+real	scalar
+
+int	npix, i
+
+begin
+	    scalar = (real (b2) - real (b1)) / (real (a2) - real (a1))
+
+	minout = min (b1, b2)
+	maxout = max (b1, b2)
+	aoff = a1
+	boff = b1
+
+	do i = 1, npix {
+	    pixval = (a[i] - aoff) * scalar
+	    b[i] = max(minout, min(maxout, pixval + boff))
+	}
+end
diff --git a/sys/vops/lz/amapl.x b/sys/vops/lz/amapl.x
new file mode 100644
index 00000000..c9d350bd
--- /dev/null
+++ b/sys/vops/lz/amapl.x
@@ -0,0 +1,30 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMAP -- Vector linear transformation.  Map the range of pixel values
+# a1,a2 from a into the range b1,b2 in b.  It is assumed that a1 < a2
+# and b1 < b2.
+
+procedure amapl (a, b, npix, a1, a2, b1, b2)
+
+long	a[ARB], b[ARB]
+long	a1, a2, b1, b2
+
+long	minout, maxout, aoff, boff, pixval
+
+double	scalar
+
+int	npix, i
+
+begin
+	    scalar = (double (b2) - double (b1)) / (double (a2) - double (a1))
+
+	minout = min (b1, b2)
+	maxout = max (b1, b2)
+	aoff = a1
+	boff = b1
+
+	do i = 1, npix {
+	    pixval = (a[i] - aoff) * scalar
+	    b[i] = max(minout, min(maxout, pixval + boff))
+	}
+end
diff --git a/sys/vops/lz/amapr.x b/sys/vops/lz/amapr.x
new file mode 100644
index 00000000..d23c44b6
--- /dev/null
+++ b/sys/vops/lz/amapr.x
@@ -0,0 +1,30 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMAP -- Vector linear transformation.  Map the range of pixel values
+# a1,a2 from a into the range b1,b2 in b.  It is assumed that a1 < a2
+# and b1 < b2.
+
+procedure amapr (a, b, npix, a1, a2, b1, b2)
+
+real	a[ARB], b[ARB]
+real	a1, a2, b1, b2
+
+real	minout, maxout, aoff, boff, pixval
+
+real	scalar
+
+int	npix, i
+
+begin
+	    scalar = (real (b2) - real (b1)) / (real (a2) - real (a1))
+
+	minout = min (b1, b2)
+	maxout = max (b1, b2)
+	aoff = a1
+	boff = b1
+
+	do i = 1, npix {
+	    pixval = (a[i] - aoff) * scalar
+	    b[i] = max(minout, min(maxout, pixval + boff))
+	}
+end
diff --git a/sys/vops/lz/amaps.x b/sys/vops/lz/amaps.x
new file mode 100644
index 00000000..fd3b8fe0
--- /dev/null
+++ b/sys/vops/lz/amaps.x
@@ -0,0 +1,30 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMAP -- Vector linear transformation.  Map the range of pixel values
+# a1,a2 from a into the range b1,b2 in b.  It is assumed that a1 < a2
+# and b1 < b2.
+
+procedure amaps (a, b, npix, a1, a2, b1, b2)
+
+short	a[ARB], b[ARB]
+short	a1, a2, b1, b2
+
+long	minout, maxout, aoff, boff, pixval
+
+real	scalar
+
+int	npix, i
+
+begin
+	    scalar = (real (b2) - real (b1)) / (real (a2) - real (a1))
+
+	minout = min (b1, b2)
+	maxout = max (b1, b2)
+	aoff = a1
+	boff = b1
+
+	do i = 1, npix {
+	    pixval = (a[i] - aoff) * scalar
+	    b[i] = max(minout, min(maxout, pixval + boff))
+	}
+end
diff --git a/sys/vops/lz/amaxc.x b/sys/vops/lz/amaxc.x
new file mode 100644
index 00000000..89c5808b
--- /dev/null
+++ b/sys/vops/lz/amaxc.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMAX -- Compute the maximum of two vectors (generic).
+
+procedure amaxc (a, b, c, npix)
+
+char	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+		c[i] = max (a[i], b[i])
+end
diff --git a/sys/vops/lz/amaxd.x b/sys/vops/lz/amaxd.x
new file mode 100644
index 00000000..0cd8253b
--- /dev/null
+++ b/sys/vops/lz/amaxd.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMAX -- Compute the maximum of two vectors (generic).
+
+procedure amaxd (a, b, c, npix)
+
+double	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+		c[i] = max (a[i], b[i])
+end
diff --git a/sys/vops/lz/amaxi.x b/sys/vops/lz/amaxi.x
new file mode 100644
index 00000000..0b2f4330
--- /dev/null
+++ b/sys/vops/lz/amaxi.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMAX -- Compute the maximum of two vectors (generic).
+
+procedure amaxi (a, b, c, npix)
+
+int	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+		c[i] = max (a[i], b[i])
+end
diff --git a/sys/vops/lz/amaxkc.x b/sys/vops/lz/amaxkc.x
new file mode 100644
index 00000000..1b5d250b
--- /dev/null
+++ b/sys/vops/lz/amaxkc.x
@@ -0,0 +1,16 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMAXK -- Compute the maximum of a constant and a vector (generic).
+
+procedure amaxkc (a, b, c, npix)
+
+char	a[ARB]
+char	b
+char	c[ARB]
+int	npix, i
+
+begin
+
+	do i = 1, npix
+		c[i] = max (a[i], b)
+end
diff --git a/sys/vops/lz/amaxkd.x b/sys/vops/lz/amaxkd.x
new file mode 100644
index 00000000..afe6e45e
--- /dev/null
+++ b/sys/vops/lz/amaxkd.x
@@ -0,0 +1,16 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMAXK -- Compute the maximum of a constant and a vector (generic).
+
+procedure amaxkd (a, b, c, npix)
+
+double	a[ARB]
+double	b
+double	c[ARB]
+int	npix, i
+
+begin
+
+	do i = 1, npix
+		c[i] = max (a[i], b)
+end
diff --git a/sys/vops/lz/amaxki.x b/sys/vops/lz/amaxki.x
new file mode 100644
index 00000000..6c74ab6e
--- /dev/null
+++ b/sys/vops/lz/amaxki.x
@@ -0,0 +1,16 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMAXK -- Compute the maximum of a constant and a vector (generic).
+
+procedure amaxki (a, b, c, npix)
+
+int	a[ARB]
+int	b
+int	c[ARB]
+int	npix, i
+
+begin
+
+	do i = 1, npix
+		c[i] = max (a[i], b)
+end
diff --git a/sys/vops/lz/amaxkl.x b/sys/vops/lz/amaxkl.x
new file mode 100644
index 00000000..bfede4ea
--- /dev/null
+++ b/sys/vops/lz/amaxkl.x
@@ -0,0 +1,16 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMAXK -- Compute the maximum of a constant and a vector (generic).
+
+procedure amaxkl (a, b, c, npix)
+
+long	a[ARB]
+long	b
+long	c[ARB]
+int	npix, i
+
+begin
+
+	do i = 1, npix
+		c[i] = max (a[i], b)
+end
diff --git a/sys/vops/lz/amaxkr.x b/sys/vops/lz/amaxkr.x
new file mode 100644
index 00000000..766c12e5
--- /dev/null
+++ b/sys/vops/lz/amaxkr.x
@@ -0,0 +1,16 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMAXK -- Compute the maximum of a constant and a vector (generic).
+
+procedure amaxkr (a, b, c, npix)
+
+real	a[ARB]
+real	b
+real	c[ARB]
+int	npix, i
+
+begin
+
+	do i = 1, npix
+		c[i] = max (a[i], b)
+end
diff --git a/sys/vops/lz/amaxks.x b/sys/vops/lz/amaxks.x
new file mode 100644
index 00000000..31aeb0b0
--- /dev/null
+++ b/sys/vops/lz/amaxks.x
@@ -0,0 +1,16 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMAXK -- Compute the maximum of a constant and a vector (generic).
+
+procedure amaxks (a, b, c, npix)
+
+short	a[ARB]
+short	b
+short	c[ARB]
+int	npix, i
+
+begin
+
+	do i = 1, npix
+		c[i] = max (a[i], b)
+end
diff --git a/sys/vops/lz/amaxkx.x b/sys/vops/lz/amaxkx.x
new file mode 100644
index 00000000..9c3212eb
--- /dev/null
+++ b/sys/vops/lz/amaxkx.x
@@ -0,0 +1,21 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMAXK -- Compute the maximum of a constant and a vector (generic).
+
+procedure amaxkx (a, b, c, npix)
+
+complex	a[ARB]
+complex	b
+complex	c[ARB]
+int	npix, i
+real	abs_b
+
+begin
+	abs_b = abs (b)
+
+	do i = 1, npix
+		if (abs(a[i]) >= abs_b)
+		    c[i] = a[i]
+		else
+		    c[i] = b
+end
diff --git a/sys/vops/lz/amaxl.x b/sys/vops/lz/amaxl.x
new file mode 100644
index 00000000..5f12ba92
--- /dev/null
+++ b/sys/vops/lz/amaxl.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMAX -- Compute the maximum of two vectors (generic).
+
+procedure amaxl (a, b, c, npix)
+
+long	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+		c[i] = max (a[i], b[i])
+end
diff --git a/sys/vops/lz/amaxr.x b/sys/vops/lz/amaxr.x
new file mode 100644
index 00000000..c6789d5f
--- /dev/null
+++ b/sys/vops/lz/amaxr.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMAX -- Compute the maximum of two vectors (generic).
+
+procedure amaxr (a, b, c, npix)
+
+real	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+		c[i] = max (a[i], b[i])
+end
diff --git a/sys/vops/lz/amaxs.x b/sys/vops/lz/amaxs.x
new file mode 100644
index 00000000..83adb3dc
--- /dev/null
+++ b/sys/vops/lz/amaxs.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMAX -- Compute the maximum of two vectors (generic).
+
+procedure amaxs (a, b, c, npix)
+
+short	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+		c[i] = max (a[i], b[i])
+end
diff --git a/sys/vops/lz/amaxx.x b/sys/vops/lz/amaxx.x
new file mode 100644
index 00000000..7f9b58bb
--- /dev/null
+++ b/sys/vops/lz/amaxx.x
@@ -0,0 +1,16 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMAX -- Compute the maximum of two vectors (generic).
+
+procedure amaxx (a, b, c, npix)
+
+complex	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+		if (abs(a[i]) >= abs(b[i]))
+		    c[i] = a[i]
+		else
+		    c[i] = b[i]
+end
diff --git a/sys/vops/lz/amed3c.x b/sys/vops/lz/amed3c.x
new file mode 100644
index 00000000..f40f6dc1
--- /dev/null
+++ b/sys/vops/lz/amed3c.x
@@ -0,0 +1,30 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMED3 -- Median of three vectors.  Each output point M[i] is the median value
+# of the three input points A[i],B[i],C[i].
+
+procedure amed3c (a, b, c, m, npix)
+
+char	a[ARB], b[ARB], c[ARB]	# input vectors
+char	m[ARB]				# output vector (median)
+int	npix
+int	i
+
+begin
+	do i = 1, npix
+	    if (a[i] < b[i]) {
+		if (b[i] < c[i])		# abc
+		    m[i] = b[i]
+		else if (a[i] < c[i])		# acb
+		    m[i] = c[i]
+		else				# cab
+		    m[i] = a[i]
+	    } else {
+		if (b[i] > c[i])		# cba
+		    m[i] = b[i]
+		else if (a[i] > c[i])		# bca
+		    m[i] = c[i]
+		else				# bac
+		    m[i] = a[i]
+	    }
+end
diff --git a/sys/vops/lz/amed3d.x b/sys/vops/lz/amed3d.x
new file mode 100644
index 00000000..74fba3c4
--- /dev/null
+++ b/sys/vops/lz/amed3d.x
@@ -0,0 +1,30 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMED3 -- Median of three vectors.  Each output point M[i] is the median value
+# of the three input points A[i],B[i],C[i].
+
+procedure amed3d (a, b, c, m, npix)
+
+double	a[ARB], b[ARB], c[ARB]	# input vectors
+double	m[ARB]				# output vector (median)
+int	npix
+int	i
+
+begin
+	do i = 1, npix
+	    if (a[i] < b[i]) {
+		if (b[i] < c[i])		# abc
+		    m[i] = b[i]
+		else if (a[i] < c[i])		# acb
+		    m[i] = c[i]
+		else				# cab
+		    m[i] = a[i]
+	    } else {
+		if (b[i] > c[i])		# cba
+		    m[i] = b[i]
+		else if (a[i] > c[i])		# bca
+		    m[i] = c[i]
+		else				# bac
+		    m[i] = a[i]
+	    }
+end
diff --git a/sys/vops/lz/amed3i.x b/sys/vops/lz/amed3i.x
new file mode 100644
index 00000000..2be5fb15
--- /dev/null
+++ b/sys/vops/lz/amed3i.x
@@ -0,0 +1,30 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMED3 -- Median of three vectors.  Each output point M[i] is the median value
+# of the three input points A[i],B[i],C[i].
+
+procedure amed3i (a, b, c, m, npix)
+
+int	a[ARB], b[ARB], c[ARB]	# input vectors
+int	m[ARB]				# output vector (median)
+int	npix
+int	i
+
+begin
+	do i = 1, npix
+	    if (a[i] < b[i]) {
+		if (b[i] < c[i])		# abc
+		    m[i] = b[i]
+		else if (a[i] < c[i])		# acb
+		    m[i] = c[i]
+		else				# cab
+		    m[i] = a[i]
+	    } else {
+		if (b[i] > c[i])		# cba
+		    m[i] = b[i]
+		else if (a[i] > c[i])		# bca
+		    m[i] = c[i]
+		else				# bac
+		    m[i] = a[i]
+	    }
+end
diff --git a/sys/vops/lz/amed3l.x b/sys/vops/lz/amed3l.x
new file mode 100644
index 00000000..480d3b05
--- /dev/null
+++ b/sys/vops/lz/amed3l.x
@@ -0,0 +1,30 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMED3 -- Median of three vectors.  Each output point M[i] is the median value
+# of the three input points A[i],B[i],C[i].
+
+procedure amed3l (a, b, c, m, npix)
+
+long	a[ARB], b[ARB], c[ARB]	# input vectors
+long	m[ARB]				# output vector (median)
+int	npix
+int	i
+
+begin
+	do i = 1, npix
+	    if (a[i] < b[i]) {
+		if (b[i] < c[i])		# abc
+		    m[i] = b[i]
+		else if (a[i] < c[i])		# acb
+		    m[i] = c[i]
+		else				# cab
+		    m[i] = a[i]
+	    } else {
+		if (b[i] > c[i])		# cba
+		    m[i] = b[i]
+		else if (a[i] > c[i])		# bca
+		    m[i] = c[i]
+		else				# bac
+		    m[i] = a[i]
+	    }
+end
diff --git a/sys/vops/lz/amed3r.x b/sys/vops/lz/amed3r.x
new file mode 100644
index 00000000..276efd03
--- /dev/null
+++ b/sys/vops/lz/amed3r.x
@@ -0,0 +1,30 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMED3 -- Median of three vectors.  Each output point M[i] is the median value
+# of the three input points A[i],B[i],C[i].
+
+procedure amed3r (a, b, c, m, npix)
+
+real	a[ARB], b[ARB], c[ARB]	# input vectors
+real	m[ARB]				# output vector (median)
+int	npix
+int	i
+
+begin
+	do i = 1, npix
+	    if (a[i] < b[i]) {
+		if (b[i] < c[i])		# abc
+		    m[i] = b[i]
+		else if (a[i] < c[i])		# acb
+		    m[i] = c[i]
+		else				# cab
+		    m[i] = a[i]
+	    } else {
+		if (b[i] > c[i])		# cba
+		    m[i] = b[i]
+		else if (a[i] > c[i])		# bca
+		    m[i] = c[i]
+		else				# bac
+		    m[i] = a[i]
+	    }
+end
diff --git a/sys/vops/lz/amed3s.x b/sys/vops/lz/amed3s.x
new file mode 100644
index 00000000..8de5ff45
--- /dev/null
+++ b/sys/vops/lz/amed3s.x
@@ -0,0 +1,30 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMED3 -- Median of three vectors.  Each output point M[i] is the median value
+# of the three input points A[i],B[i],C[i].
+
+procedure amed3s (a, b, c, m, npix)
+
+short	a[ARB], b[ARB], c[ARB]	# input vectors
+short	m[ARB]				# output vector (median)
+int	npix
+int	i
+
+begin
+	do i = 1, npix
+	    if (a[i] < b[i]) {
+		if (b[i] < c[i])		# abc
+		    m[i] = b[i]
+		else if (a[i] < c[i])		# acb
+		    m[i] = c[i]
+		else				# cab
+		    m[i] = a[i]
+	    } else {
+		if (b[i] > c[i])		# cba
+		    m[i] = b[i]
+		else if (a[i] > c[i])		# bca
+		    m[i] = c[i]
+		else				# bac
+		    m[i] = a[i]
+	    }
+end
diff --git a/sys/vops/lz/amed4c.x b/sys/vops/lz/amed4c.x
new file mode 100644
index 00000000..34228107
--- /dev/null
+++ b/sys/vops/lz/amed4c.x
@@ -0,0 +1,41 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMED4 -- Median of four vectors.  Each output point M[i] is the median of the
+# four input points A[i],B[i],C[i],D[i].  The vector min and max are also
+# computed and returned in the A and D vectors.  The input vectors are modifed
+# in place.
+
+procedure amed4c (a, b, c, d, m, npix)
+
+char	a[ARB], b[ARB]		# input vectors
+char	c[ARB], d[ARB]		# input vectors
+char	m[ARB]				# output vector (median)
+int	npix
+
+int	i
+char	temp
+define	swap {temp=$1;$1=$2;$2=temp}
+
+begin
+	do i = 1, npix {
+	    # Move the minimum value to A[i].
+	    if (b[i] < a[i])
+		swap (b[i], a[i])
+	    if (c[i] < a[i])
+		swap (c[i], a[i])
+	    if (d[i] < a[i])
+		swap (d[i], a[i])
+
+	    # Move the maximum value to D[i].
+	    if (b[i] > d[i])
+		swap (b[i], d[i])
+	    if (c[i] > d[i])
+		swap (c[i], d[i])
+
+	    # Return the median value.
+	    if (b[i] < c[i])
+		m[i] = b[i]
+	    else
+		m[i] = c[i]
+	}
+end
diff --git a/sys/vops/lz/amed4d.x b/sys/vops/lz/amed4d.x
new file mode 100644
index 00000000..aec95abd
--- /dev/null
+++ b/sys/vops/lz/amed4d.x
@@ -0,0 +1,41 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMED4 -- Median of four vectors.  Each output point M[i] is the median of the
+# four input points A[i],B[i],C[i],D[i].  The vector min and max are also
+# computed and returned in the A and D vectors.  The input vectors are modifed
+# in place.
+
+procedure amed4d (a, b, c, d, m, npix)
+
+double	a[ARB], b[ARB]		# input vectors
+double	c[ARB], d[ARB]		# input vectors
+double	m[ARB]				# output vector (median)
+int	npix
+
+int	i
+double	temp
+define	swap {temp=$1;$1=$2;$2=temp}
+
+begin
+	do i = 1, npix {
+	    # Move the minimum value to A[i].
+	    if (b[i] < a[i])
+		swap (b[i], a[i])
+	    if (c[i] < a[i])
+		swap (c[i], a[i])
+	    if (d[i] < a[i])
+		swap (d[i], a[i])
+
+	    # Move the maximum value to D[i].
+	    if (b[i] > d[i])
+		swap (b[i], d[i])
+	    if (c[i] > d[i])
+		swap (c[i], d[i])
+
+	    # Return the median value.
+	    if (b[i] < c[i])
+		m[i] = b[i]
+	    else
+		m[i] = c[i]
+	}
+end
diff --git a/sys/vops/lz/amed4i.x b/sys/vops/lz/amed4i.x
new file mode 100644
index 00000000..f39d01b6
--- /dev/null
+++ b/sys/vops/lz/amed4i.x
@@ -0,0 +1,41 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMED4 -- Median of four vectors.  Each output point M[i] is the median of the
+# four input points A[i],B[i],C[i],D[i].  The vector min and max are also
+# computed and returned in the A and D vectors.  The input vectors are modifed
+# in place.
+
+procedure amed4i (a, b, c, d, m, npix)
+
+int	a[ARB], b[ARB]		# input vectors
+int	c[ARB], d[ARB]		# input vectors
+int	m[ARB]				# output vector (median)
+int	npix
+
+int	i
+int	temp
+define	swap {temp=$1;$1=$2;$2=temp}
+
+begin
+	do i = 1, npix {
+	    # Move the minimum value to A[i].
+	    if (b[i] < a[i])
+		swap (b[i], a[i])
+	    if (c[i] < a[i])
+		swap (c[i], a[i])
+	    if (d[i] < a[i])
+		swap (d[i], a[i])
+
+	    # Move the maximum value to D[i].
+	    if (b[i] > d[i])
+		swap (b[i], d[i])
+	    if (c[i] > d[i])
+		swap (c[i], d[i])
+
+	    # Return the median value.
+	    if (b[i] < c[i])
+		m[i] = b[i]
+	    else
+		m[i] = c[i]
+	}
+end
diff --git a/sys/vops/lz/amed4l.x b/sys/vops/lz/amed4l.x
new file mode 100644
index 00000000..367124ef
--- /dev/null
+++ b/sys/vops/lz/amed4l.x
@@ -0,0 +1,41 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMED4 -- Median of four vectors.  Each output point M[i] is the median of the
+# four input points A[i],B[i],C[i],D[i].  The vector min and max are also
+# computed and returned in the A and D vectors.  The input vectors are modifed
+# in place.
+
+procedure amed4l (a, b, c, d, m, npix)
+
+long	a[ARB], b[ARB]		# input vectors
+long	c[ARB], d[ARB]		# input vectors
+long	m[ARB]				# output vector (median)
+int	npix
+
+int	i
+long	temp
+define	swap {temp=$1;$1=$2;$2=temp}
+
+begin
+	do i = 1, npix {
+	    # Move the minimum value to A[i].
+	    if (b[i] < a[i])
+		swap (b[i], a[i])
+	    if (c[i] < a[i])
+		swap (c[i], a[i])
+	    if (d[i] < a[i])
+		swap (d[i], a[i])
+
+	    # Move the maximum value to D[i].
+	    if (b[i] > d[i])
+		swap (b[i], d[i])
+	    if (c[i] > d[i])
+		swap (c[i], d[i])
+
+	    # Return the median value.
+	    if (b[i] < c[i])
+		m[i] = b[i]
+	    else
+		m[i] = c[i]
+	}
+end
diff --git a/sys/vops/lz/amed4r.x b/sys/vops/lz/amed4r.x
new file mode 100644
index 00000000..386ca7a5
--- /dev/null
+++ b/sys/vops/lz/amed4r.x
@@ -0,0 +1,41 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMED4 -- Median of four vectors.  Each output point M[i] is the median of the
+# four input points A[i],B[i],C[i],D[i].  The vector min and max are also
+# computed and returned in the A and D vectors.  The input vectors are modifed
+# in place.
+
+procedure amed4r (a, b, c, d, m, npix)
+
+real	a[ARB], b[ARB]		# input vectors
+real	c[ARB], d[ARB]		# input vectors
+real	m[ARB]				# output vector (median)
+int	npix
+
+int	i
+real	temp
+define	swap {temp=$1;$1=$2;$2=temp}
+
+begin
+	do i = 1, npix {
+	    # Move the minimum value to A[i].
+	    if (b[i] < a[i])
+		swap (b[i], a[i])
+	    if (c[i] < a[i])
+		swap (c[i], a[i])
+	    if (d[i] < a[i])
+		swap (d[i], a[i])
+
+	    # Move the maximum value to D[i].
+	    if (b[i] > d[i])
+		swap (b[i], d[i])
+	    if (c[i] > d[i])
+		swap (c[i], d[i])
+
+	    # Return the median value.
+	    if (b[i] < c[i])
+		m[i] = b[i]
+	    else
+		m[i] = c[i]
+	}
+end
diff --git a/sys/vops/lz/amed4s.x b/sys/vops/lz/amed4s.x
new file mode 100644
index 00000000..3ed8fe1d
--- /dev/null
+++ b/sys/vops/lz/amed4s.x
@@ -0,0 +1,41 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMED4 -- Median of four vectors.  Each output point M[i] is the median of the
+# four input points A[i],B[i],C[i],D[i].  The vector min and max are also
+# computed and returned in the A and D vectors.  The input vectors are modifed
+# in place.
+
+procedure amed4s (a, b, c, d, m, npix)
+
+short	a[ARB], b[ARB]		# input vectors
+short	c[ARB], d[ARB]		# input vectors
+short	m[ARB]				# output vector (median)
+int	npix
+
+int	i
+short	temp
+define	swap {temp=$1;$1=$2;$2=temp}
+
+begin
+	do i = 1, npix {
+	    # Move the minimum value to A[i].
+	    if (b[i] < a[i])
+		swap (b[i], a[i])
+	    if (c[i] < a[i])
+		swap (c[i], a[i])
+	    if (d[i] < a[i])
+		swap (d[i], a[i])
+
+	    # Move the maximum value to D[i].
+	    if (b[i] > d[i])
+		swap (b[i], d[i])
+	    if (c[i] > d[i])
+		swap (c[i], d[i])
+
+	    # Return the median value.
+	    if (b[i] < c[i])
+		m[i] = b[i]
+	    else
+		m[i] = c[i]
+	}
+end
diff --git a/sys/vops/lz/amed5c.x b/sys/vops/lz/amed5c.x
new file mode 100644
index 00000000..8302e080
--- /dev/null
+++ b/sys/vops/lz/amed5c.x
@@ -0,0 +1,55 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMED5 -- Median of five vectors.  Each output point M[i] is the median of the
+# five input points A[i],B[i],C[i],D[i],E[i].  The vector min and max are also
+# computed and returned in the A and E vectors.  The input vectors are modifed.
+
+procedure amed5c (a, b, c, d, e, m, npix)
+
+char	a[ARB], b[ARB]		# input vectors
+char	c[ARB], d[ARB], e[ARB]	# input vectors
+char	m[ARB]				# output vector (median)
+int	npix
+
+int	i
+char	temp
+define	swap {temp=$1;$1=$2;$2=temp}
+
+begin
+	do i = 1, npix {
+	    # Move the minimum value to A[i].
+	    if (b[i] < a[i])
+		swap (b[i], a[i])
+	    if (c[i] < a[i])
+		swap (c[i], a[i])
+	    if (d[i] < a[i])
+		swap (d[i], a[i])
+	    if (e[i] < a[i])
+		swap (e[i], a[i])
+
+	    # Move the maximum value to E[i].
+	    if (b[i] > e[i])
+		swap (b[i], e[i])
+	    if (c[i] > e[i])
+		swap (c[i], e[i])
+	    if (d[i] > e[i])
+		swap (d[i], e[i])
+
+	    # Return the median value of the central three points.
+	    if (b[i] < c[i]) {
+		if (c[i] < d[i])		# bcd
+		    m[i] = c[i]
+		else if (b[i] < d[i])		# bdc
+		    m[i] = d[i]
+		else				# dbc
+		    m[i] = b[i]
+	    } else {
+		if (c[i] > d[i])		# dcb
+		    m[i] = c[i]
+		else if (b[i] > d[i])		# cdb
+		    m[i] = d[i]
+		else				# cbd
+		    m[i] = b[i]
+	    }
+	}
+end
diff --git a/sys/vops/lz/amed5d.x b/sys/vops/lz/amed5d.x
new file mode 100644
index 00000000..a813f82f
--- /dev/null
+++ b/sys/vops/lz/amed5d.x
@@ -0,0 +1,55 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMED5 -- Median of five vectors.  Each output point M[i] is the median of the
+# five input points A[i],B[i],C[i],D[i],E[i].  The vector min and max are also
+# computed and returned in the A and E vectors.  The input vectors are modifed.
+
+procedure amed5d (a, b, c, d, e, m, npix)
+
+double	a[ARB], b[ARB]		# input vectors
+double	c[ARB], d[ARB], e[ARB]	# input vectors
+double	m[ARB]				# output vector (median)
+int	npix
+
+int	i
+double	temp
+define	swap {temp=$1;$1=$2;$2=temp}
+
+begin
+	do i = 1, npix {
+	    # Move the minimum value to A[i].
+	    if (b[i] < a[i])
+		swap (b[i], a[i])
+	    if (c[i] < a[i])
+		swap (c[i], a[i])
+	    if (d[i] < a[i])
+		swap (d[i], a[i])
+	    if (e[i] < a[i])
+		swap (e[i], a[i])
+
+	    # Move the maximum value to E[i].
+	    if (b[i] > e[i])
+		swap (b[i], e[i])
+	    if (c[i] > e[i])
+		swap (c[i], e[i])
+	    if (d[i] > e[i])
+		swap (d[i], e[i])
+
+	    # Return the median value of the central three points.
+	    if (b[i] < c[i]) {
+		if (c[i] < d[i])		# bcd
+		    m[i] = c[i]
+		else if (b[i] < d[i])		# bdc
+		    m[i] = d[i]
+		else				# dbc
+		    m[i] = b[i]
+	    } else {
+		if (c[i] > d[i])		# dcb
+		    m[i] = c[i]
+		else if (b[i] > d[i])		# cdb
+		    m[i] = d[i]
+		else				# cbd
+		    m[i] = b[i]
+	    }
+	}
+end
diff --git a/sys/vops/lz/amed5i.x b/sys/vops/lz/amed5i.x
new file mode 100644
index 00000000..9738be6a
--- /dev/null
+++ b/sys/vops/lz/amed5i.x
@@ -0,0 +1,55 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMED5 -- Median of five vectors.  Each output point M[i] is the median of the
+# five input points A[i],B[i],C[i],D[i],E[i].  The vector min and max are also
+# computed and returned in the A and E vectors.  The input vectors are modifed.
+
+procedure amed5i (a, b, c, d, e, m, npix)
+
+int	a[ARB], b[ARB]		# input vectors
+int	c[ARB], d[ARB], e[ARB]	# input vectors
+int	m[ARB]				# output vector (median)
+int	npix
+
+int	i
+int	temp
+define	swap {temp=$1;$1=$2;$2=temp}
+
+begin
+	do i = 1, npix {
+	    # Move the minimum value to A[i].
+	    if (b[i] < a[i])
+		swap (b[i], a[i])
+	    if (c[i] < a[i])
+		swap (c[i], a[i])
+	    if (d[i] < a[i])
+		swap (d[i], a[i])
+	    if (e[i] < a[i])
+		swap (e[i], a[i])
+
+	    # Move the maximum value to E[i].
+	    if (b[i] > e[i])
+		swap (b[i], e[i])
+	    if (c[i] > e[i])
+		swap (c[i], e[i])
+	    if (d[i] > e[i])
+		swap (d[i], e[i])
+
+	    # Return the median value of the central three points.
+	    if (b[i] < c[i]) {
+		if (c[i] < d[i])		# bcd
+		    m[i] = c[i]
+		else if (b[i] < d[i])		# bdc
+		    m[i] = d[i]
+		else				# dbc
+		    m[i] = b[i]
+	    } else {
+		if (c[i] > d[i])		# dcb
+		    m[i] = c[i]
+		else if (b[i] > d[i])		# cdb
+		    m[i] = d[i]
+		else				# cbd
+		    m[i] = b[i]
+	    }
+	}
+end
diff --git a/sys/vops/lz/amed5l.x b/sys/vops/lz/amed5l.x
new file mode 100644
index 00000000..33bd869d
--- /dev/null
+++ b/sys/vops/lz/amed5l.x
@@ -0,0 +1,55 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMED5 -- Median of five vectors.  Each output point M[i] is the median of the
+# five input points A[i],B[i],C[i],D[i],E[i].  The vector min and max are also
+# computed and returned in the A and E vectors.  The input vectors are modifed.
+
+procedure amed5l (a, b, c, d, e, m, npix)
+
+long	a[ARB], b[ARB]		# input vectors
+long	c[ARB], d[ARB], e[ARB]	# input vectors
+long	m[ARB]				# output vector (median)
+int	npix
+
+int	i
+long	temp
+define	swap {temp=$1;$1=$2;$2=temp}
+
+begin
+	do i = 1, npix {
+	    # Move the minimum value to A[i].
+	    if (b[i] < a[i])
+		swap (b[i], a[i])
+	    if (c[i] < a[i])
+		swap (c[i], a[i])
+	    if (d[i] < a[i])
+		swap (d[i], a[i])
+	    if (e[i] < a[i])
+		swap (e[i], a[i])
+
+	    # Move the maximum value to E[i].
+	    if (b[i] > e[i])
+		swap (b[i], e[i])
+	    if (c[i] > e[i])
+		swap (c[i], e[i])
+	    if (d[i] > e[i])
+		swap (d[i], e[i])
+
+	    # Return the median value of the central three points.
+	    if (b[i] < c[i]) {
+		if (c[i] < d[i])		# bcd
+		    m[i] = c[i]
+		else if (b[i] < d[i])		# bdc
+		    m[i] = d[i]
+		else				# dbc
+		    m[i] = b[i]
+	    } else {
+		if (c[i] > d[i])		# dcb
+		    m[i] = c[i]
+		else if (b[i] > d[i])		# cdb
+		    m[i] = d[i]
+		else				# cbd
+		    m[i] = b[i]
+	    }
+	}
+end
diff --git a/sys/vops/lz/amed5r.x b/sys/vops/lz/amed5r.x
new file mode 100644
index 00000000..9bce0597
--- /dev/null
+++ b/sys/vops/lz/amed5r.x
@@ -0,0 +1,55 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMED5 -- Median of five vectors.  Each output point M[i] is the median of the
+# five input points A[i],B[i],C[i],D[i],E[i].  The vector min and max are also
+# computed and returned in the A and E vectors.  The input vectors are modifed.
+
+procedure amed5r (a, b, c, d, e, m, npix)
+
+real	a[ARB], b[ARB]		# input vectors
+real	c[ARB], d[ARB], e[ARB]	# input vectors
+real	m[ARB]				# output vector (median)
+int	npix
+
+int	i
+real	temp
+define	swap {temp=$1;$1=$2;$2=temp}
+
+begin
+	do i = 1, npix {
+	    # Move the minimum value to A[i].
+	    if (b[i] < a[i])
+		swap (b[i], a[i])
+	    if (c[i] < a[i])
+		swap (c[i], a[i])
+	    if (d[i] < a[i])
+		swap (d[i], a[i])
+	    if (e[i] < a[i])
+		swap (e[i], a[i])
+
+	    # Move the maximum value to E[i].
+	    if (b[i] > e[i])
+		swap (b[i], e[i])
+	    if (c[i] > e[i])
+		swap (c[i], e[i])
+	    if (d[i] > e[i])
+		swap (d[i], e[i])
+
+	    # Return the median value of the central three points.
+	    if (b[i] < c[i]) {
+		if (c[i] < d[i])		# bcd
+		    m[i] = c[i]
+		else if (b[i] < d[i])		# bdc
+		    m[i] = d[i]
+		else				# dbc
+		    m[i] = b[i]
+	    } else {
+		if (c[i] > d[i])		# dcb
+		    m[i] = c[i]
+		else if (b[i] > d[i])		# cdb
+		    m[i] = d[i]
+		else				# cbd
+		    m[i] = b[i]
+	    }
+	}
+end
diff --git a/sys/vops/lz/amed5s.x b/sys/vops/lz/amed5s.x
new file mode 100644
index 00000000..31f34696
--- /dev/null
+++ b/sys/vops/lz/amed5s.x
@@ -0,0 +1,55 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMED5 -- Median of five vectors.  Each output point M[i] is the median of the
+# five input points A[i],B[i],C[i],D[i],E[i].  The vector min and max are also
+# computed and returned in the A and E vectors.  The input vectors are modifed.
+
+procedure amed5s (a, b, c, d, e, m, npix)
+
+short	a[ARB], b[ARB]		# input vectors
+short	c[ARB], d[ARB], e[ARB]	# input vectors
+short	m[ARB]				# output vector (median)
+int	npix
+
+int	i
+short	temp
+define	swap {temp=$1;$1=$2;$2=temp}
+
+begin
+	do i = 1, npix {
+	    # Move the minimum value to A[i].
+	    if (b[i] < a[i])
+		swap (b[i], a[i])
+	    if (c[i] < a[i])
+		swap (c[i], a[i])
+	    if (d[i] < a[i])
+		swap (d[i], a[i])
+	    if (e[i] < a[i])
+		swap (e[i], a[i])
+
+	    # Move the maximum value to E[i].
+	    if (b[i] > e[i])
+		swap (b[i], e[i])
+	    if (c[i] > e[i])
+		swap (c[i], e[i])
+	    if (d[i] > e[i])
+		swap (d[i], e[i])
+
+	    # Return the median value of the central three points.
+	    if (b[i] < c[i]) {
+		if (c[i] < d[i])		# bcd
+		    m[i] = c[i]
+		else if (b[i] < d[i])		# bdc
+		    m[i] = d[i]
+		else				# dbc
+		    m[i] = b[i]
+	    } else {
+		if (c[i] > d[i])		# dcb
+		    m[i] = c[i]
+		else if (b[i] > d[i])		# cdb
+		    m[i] = d[i]
+		else				# cbd
+		    m[i] = b[i]
+	    }
+	}
+end
diff --git a/sys/vops/lz/amedc.x b/sys/vops/lz/amedc.x
new file mode 100644
index 00000000..09dcf10c
--- /dev/null
+++ b/sys/vops/lz/amedc.x
@@ -0,0 +1,48 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMED -- Vector median selection.  The selection is carried out in a temporary
+# array, leaving the input vector unmodified.  Especially demanding applications
+# may wish to call the asok routine directory to avoid the call to the memory
+# allocator.
+
+char procedure amedc (a, npix)
+
+char	a[ARB]
+int	npix
+
+pointer	sp, aa
+char	median
+char	asokc()		# select the Kth smallest element from A
+
+begin
+	switch (npix) {
+	case 1, 2:
+	    return (a[1])
+
+	case 3:
+		if (a[1] < a[2]) {
+		    if (a[2] < a[3])
+			return (a[2])
+		    else if (a[1] < a[3])
+			return (a[3])
+		    else
+			return (a[1])
+		} else {
+		    if (a[2] > a[3])
+			return (a[2])
+		    else if (a[1] < a[3])
+			return (a[1])
+		    else
+			return (a[3])
+		}
+
+	default:
+	    call smark (sp)
+	    call salloc (aa, npix, TY_CHAR)
+	    call amovc (a, Memc[aa], npix)
+	    median = asokc (Memc[aa], npix, (npix + 1) / 2)
+	    call sfree (sp)
+
+	    return (median)
+	}
+end
diff --git a/sys/vops/lz/amedd.x b/sys/vops/lz/amedd.x
new file mode 100644
index 00000000..c3fbc3aa
--- /dev/null
+++ b/sys/vops/lz/amedd.x
@@ -0,0 +1,48 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMED -- Vector median selection.  The selection is carried out in a temporary
+# array, leaving the input vector unmodified.  Especially demanding applications
+# may wish to call the asok routine directory to avoid the call to the memory
+# allocator.
+
+double procedure amedd (a, npix)
+
+double	a[ARB]
+int	npix
+
+pointer	sp, aa
+double	median
+double	asokd()		# select the Kth smallest element from A
+
+begin
+	switch (npix) {
+	case 1, 2:
+	    return (a[1])
+
+	case 3:
+		if (a[1] < a[2]) {
+		    if (a[2] < a[3])
+			return (a[2])
+		    else if (a[1] < a[3])
+			return (a[3])
+		    else
+			return (a[1])
+		} else {
+		    if (a[2] > a[3])
+			return (a[2])
+		    else if (a[1] < a[3])
+			return (a[1])
+		    else
+			return (a[3])
+		}
+
+	default:
+	    call smark (sp)
+	    call salloc (aa, npix, TY_DOUBLE)
+	    call amovd (a, Memd[aa], npix)
+	    median = asokd (Memd[aa], npix, (npix + 1) / 2)
+	    call sfree (sp)
+
+	    return (median)
+	}
+end
diff --git a/sys/vops/lz/amedi.x b/sys/vops/lz/amedi.x
new file mode 100644
index 00000000..69c1ce77
--- /dev/null
+++ b/sys/vops/lz/amedi.x
@@ -0,0 +1,48 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMED -- Vector median selection.  The selection is carried out in a temporary
+# array, leaving the input vector unmodified.  Especially demanding applications
+# may wish to call the asok routine directory to avoid the call to the memory
+# allocator.
+
+int procedure amedi (a, npix)
+
+int	a[ARB]
+int	npix
+
+pointer	sp, aa
+int	median
+int	asoki()		# select the Kth smallest element from A
+
+begin
+	switch (npix) {
+	case 1, 2:
+	    return (a[1])
+
+	case 3:
+		if (a[1] < a[2]) {
+		    if (a[2] < a[3])
+			return (a[2])
+		    else if (a[1] < a[3])
+			return (a[3])
+		    else
+			return (a[1])
+		} else {
+		    if (a[2] > a[3])
+			return (a[2])
+		    else if (a[1] < a[3])
+			return (a[1])
+		    else
+			return (a[3])
+		}
+
+	default:
+	    call smark (sp)
+	    call salloc (aa, npix, TY_INT)
+	    call amovi (a, Memi[aa], npix)
+	    median = asoki (Memi[aa], npix, (npix + 1) / 2)
+	    call sfree (sp)
+
+	    return (median)
+	}
+end
diff --git a/sys/vops/lz/amedl.x b/sys/vops/lz/amedl.x
new file mode 100644
index 00000000..8a993fd2
--- /dev/null
+++ b/sys/vops/lz/amedl.x
@@ -0,0 +1,48 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMED -- Vector median selection.  The selection is carried out in a temporary
+# array, leaving the input vector unmodified.  Especially demanding applications
+# may wish to call the asok routine directory to avoid the call to the memory
+# allocator.
+
+long procedure amedl (a, npix)
+
+long	a[ARB]
+int	npix
+
+pointer	sp, aa
+long	median
+long	asokl()		# select the Kth smallest element from A
+
+begin
+	switch (npix) {
+	case 1, 2:
+	    return (a[1])
+
+	case 3:
+		if (a[1] < a[2]) {
+		    if (a[2] < a[3])
+			return (a[2])
+		    else if (a[1] < a[3])
+			return (a[3])
+		    else
+			return (a[1])
+		} else {
+		    if (a[2] > a[3])
+			return (a[2])
+		    else if (a[1] < a[3])
+			return (a[1])
+		    else
+			return (a[3])
+		}
+
+	default:
+	    call smark (sp)
+	    call salloc (aa, npix, TY_LONG)
+	    call amovl (a, Meml[aa], npix)
+	    median = asokl (Meml[aa], npix, (npix + 1) / 2)
+	    call sfree (sp)
+
+	    return (median)
+	}
+end
diff --git a/sys/vops/lz/amedr.x b/sys/vops/lz/amedr.x
new file mode 100644
index 00000000..e459b22a
--- /dev/null
+++ b/sys/vops/lz/amedr.x
@@ -0,0 +1,48 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMED -- Vector median selection.  The selection is carried out in a temporary
+# array, leaving the input vector unmodified.  Especially demanding applications
+# may wish to call the asok routine directory to avoid the call to the memory
+# allocator.
+
+real procedure amedr (a, npix)
+
+real	a[ARB]
+int	npix
+
+pointer	sp, aa
+real	median
+real	asokr()		# select the Kth smallest element from A
+
+begin
+	switch (npix) {
+	case 1, 2:
+	    return (a[1])
+
+	case 3:
+		if (a[1] < a[2]) {
+		    if (a[2] < a[3])
+			return (a[2])
+		    else if (a[1] < a[3])
+			return (a[3])
+		    else
+			return (a[1])
+		} else {
+		    if (a[2] > a[3])
+			return (a[2])
+		    else if (a[1] < a[3])
+			return (a[1])
+		    else
+			return (a[3])
+		}
+
+	default:
+	    call smark (sp)
+	    call salloc (aa, npix, TY_REAL)
+	    call amovr (a, Memr[aa], npix)
+	    median = asokr (Memr[aa], npix, (npix + 1) / 2)
+	    call sfree (sp)
+
+	    return (median)
+	}
+end
diff --git a/sys/vops/lz/ameds.x b/sys/vops/lz/ameds.x
new file mode 100644
index 00000000..5d4d28db
--- /dev/null
+++ b/sys/vops/lz/ameds.x
@@ -0,0 +1,48 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMED -- Vector median selection.  The selection is carried out in a temporary
+# array, leaving the input vector unmodified.  Especially demanding applications
+# may wish to call the asok routine directory to avoid the call to the memory
+# allocator.
+
+short procedure ameds (a, npix)
+
+short	a[ARB]
+int	npix
+
+pointer	sp, aa
+short	median
+short	asoks()		# select the Kth smallest element from A
+
+begin
+	switch (npix) {
+	case 1, 2:
+	    return (a[1])
+
+	case 3:
+		if (a[1] < a[2]) {
+		    if (a[2] < a[3])
+			return (a[2])
+		    else if (a[1] < a[3])
+			return (a[3])
+		    else
+			return (a[1])
+		} else {
+		    if (a[2] > a[3])
+			return (a[2])
+		    else if (a[1] < a[3])
+			return (a[1])
+		    else
+			return (a[3])
+		}
+
+	default:
+	    call smark (sp)
+	    call salloc (aa, npix, TY_SHORT)
+	    call amovs (a, Mems[aa], npix)
+	    median = asoks (Mems[aa], npix, (npix + 1) / 2)
+	    call sfree (sp)
+
+	    return (median)
+	}
+end
diff --git a/sys/vops/lz/amedx.x b/sys/vops/lz/amedx.x
new file mode 100644
index 00000000..ca2b75dc
--- /dev/null
+++ b/sys/vops/lz/amedx.x
@@ -0,0 +1,52 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMED -- Vector median selection.  The selection is carried out in a temporary
+# array, leaving the input vector unmodified.  Especially demanding applications
+# may wish to call the asok routine directory to avoid the call to the memory
+# allocator.
+
+complex procedure amedx (a, npix)
+
+complex	a[ARB]
+int	npix
+
+pointer	sp, aa
+complex	median
+complex	asokx()		# select the Kth smallest element from A
+real	a1, a2, a3
+
+begin
+	switch (npix) {
+	case 1, 2:
+	    return (a[1])
+
+	case 3:
+		a1 = abs (a[1])
+		a2 = abs (a[2])
+		a3 = abs (a[3])
+		if (a1 < a2) {
+		    if (a2 < a3)
+			return (a[2])
+		    else if (a1 < a3)
+			return (a[3])
+		    else
+			return (a[1])
+		} else {
+		    if (a2 > a3)
+			return (a[2])
+		    else if (a1 < a3)
+			return (a[1])
+		    else
+			return (a[3])
+		}
+
+	default:
+	    call smark (sp)
+	    call salloc (aa, npix, TY_COMPLEX)
+	    call amovx (a, Memx[aa], npix)
+	    median = asokx (Memx[aa], npix, (npix + 1) / 2)
+	    call sfree (sp)
+
+	    return (median)
+	}
+end
diff --git a/sys/vops/lz/amgsd.x b/sys/vops/lz/amgsd.x
new file mode 100644
index 00000000..36efe58e
--- /dev/null
+++ b/sys/vops/lz/amgsd.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMGS -- Return the square of the magnitude of two vectors.
+
+procedure amgsd (a, b, c, npix)
+
+double	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] ** 2 + b[i] ** 2
+end
diff --git a/sys/vops/lz/amgsi.x b/sys/vops/lz/amgsi.x
new file mode 100644
index 00000000..e45a8c70
--- /dev/null
+++ b/sys/vops/lz/amgsi.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMGS -- Return the square of the magnitude of two vectors.
+
+procedure amgsi (a, b, c, npix)
+
+int	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] ** 2 + b[i] ** 2
+end
diff --git a/sys/vops/lz/amgsl.x b/sys/vops/lz/amgsl.x
new file mode 100644
index 00000000..6ae850e9
--- /dev/null
+++ b/sys/vops/lz/amgsl.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMGS -- Return the square of the magnitude of two vectors.
+
+procedure amgsl (a, b, c, npix)
+
+long	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] ** 2 + b[i] ** 2
+end
diff --git a/sys/vops/lz/amgsr.x b/sys/vops/lz/amgsr.x
new file mode 100644
index 00000000..fbfbb880
--- /dev/null
+++ b/sys/vops/lz/amgsr.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMGS -- Return the square of the magnitude of two vectors.
+
+procedure amgsr (a, b, c, npix)
+
+real	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] ** 2 + b[i] ** 2
+end
diff --git a/sys/vops/lz/amgss.x b/sys/vops/lz/amgss.x
new file mode 100644
index 00000000..592d520c
--- /dev/null
+++ b/sys/vops/lz/amgss.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMGS -- Return the square of the magnitude of two vectors.
+
+procedure amgss (a, b, c, npix)
+
+short	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] ** 2 + b[i] ** 2
+end
diff --git a/sys/vops/lz/amgsx.x b/sys/vops/lz/amgsx.x
new file mode 100644
index 00000000..c40834f4
--- /dev/null
+++ b/sys/vops/lz/amgsx.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMGS -- Return the square of the magnitude of two vectors.
+
+procedure amgsx (a, b, c, npix)
+
+complex	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] ** 2 + b[i] ** 2
+end
diff --git a/sys/vops/lz/aminc.x b/sys/vops/lz/aminc.x
new file mode 100644
index 00000000..a319819e
--- /dev/null
+++ b/sys/vops/lz/aminc.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMIN -- Compute the minimum of two vectors (generic).
+
+procedure aminc (a, b, c, npix)
+
+char	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+		c[i] = min (a[i], b[i])
+end
diff --git a/sys/vops/lz/amind.x b/sys/vops/lz/amind.x
new file mode 100644
index 00000000..e1574051
--- /dev/null
+++ b/sys/vops/lz/amind.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMIN -- Compute the minimum of two vectors (generic).
+
+procedure amind (a, b, c, npix)
+
+double	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+		c[i] = min (a[i], b[i])
+end
diff --git a/sys/vops/lz/amini.x b/sys/vops/lz/amini.x
new file mode 100644
index 00000000..c7a76820
--- /dev/null
+++ b/sys/vops/lz/amini.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMIN -- Compute the minimum of two vectors (generic).
+
+procedure amini (a, b, c, npix)
+
+int	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+		c[i] = min (a[i], b[i])
+end
diff --git a/sys/vops/lz/aminkc.x b/sys/vops/lz/aminkc.x
new file mode 100644
index 00000000..a9b91e0e
--- /dev/null
+++ b/sys/vops/lz/aminkc.x
@@ -0,0 +1,16 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMINK -- Compute the minimum of a constant and a vector (generic).
+
+procedure aminkc (a, b, c, npix)
+
+char	a[ARB]
+char	b
+char	c[ARB]
+int	npix, i
+
+begin
+
+	do i = 1, npix
+		c[i] = min (a[i], b)
+end
diff --git a/sys/vops/lz/aminkd.x b/sys/vops/lz/aminkd.x
new file mode 100644
index 00000000..6b8a0506
--- /dev/null
+++ b/sys/vops/lz/aminkd.x
@@ -0,0 +1,16 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMINK -- Compute the minimum of a constant and a vector (generic).
+
+procedure aminkd (a, b, c, npix)
+
+double	a[ARB]
+double	b
+double	c[ARB]
+int	npix, i
+
+begin
+
+	do i = 1, npix
+		c[i] = min (a[i], b)
+end
diff --git a/sys/vops/lz/aminki.x b/sys/vops/lz/aminki.x
new file mode 100644
index 00000000..b2793c71
--- /dev/null
+++ b/sys/vops/lz/aminki.x
@@ -0,0 +1,16 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMINK -- Compute the minimum of a constant and a vector (generic).
+
+procedure aminki (a, b, c, npix)
+
+int	a[ARB]
+int	b
+int	c[ARB]
+int	npix, i
+
+begin
+
+	do i = 1, npix
+		c[i] = min (a[i], b)
+end
diff --git a/sys/vops/lz/aminkl.x b/sys/vops/lz/aminkl.x
new file mode 100644
index 00000000..530b326f
--- /dev/null
+++ b/sys/vops/lz/aminkl.x
@@ -0,0 +1,16 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMINK -- Compute the minimum of a constant and a vector (generic).
+
+procedure aminkl (a, b, c, npix)
+
+long	a[ARB]
+long	b
+long	c[ARB]
+int	npix, i
+
+begin
+
+	do i = 1, npix
+		c[i] = min (a[i], b)
+end
diff --git a/sys/vops/lz/aminkr.x b/sys/vops/lz/aminkr.x
new file mode 100644
index 00000000..76000fb7
--- /dev/null
+++ b/sys/vops/lz/aminkr.x
@@ -0,0 +1,16 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMINK -- Compute the minimum of a constant and a vector (generic).
+
+procedure aminkr (a, b, c, npix)
+
+real	a[ARB]
+real	b
+real	c[ARB]
+int	npix, i
+
+begin
+
+	do i = 1, npix
+		c[i] = min (a[i], b)
+end
diff --git a/sys/vops/lz/aminks.x b/sys/vops/lz/aminks.x
new file mode 100644
index 00000000..28d1b358
--- /dev/null
+++ b/sys/vops/lz/aminks.x
@@ -0,0 +1,16 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMINK -- Compute the minimum of a constant and a vector (generic).
+
+procedure aminks (a, b, c, npix)
+
+short	a[ARB]
+short	b
+short	c[ARB]
+int	npix, i
+
+begin
+
+	do i = 1, npix
+		c[i] = min (a[i], b)
+end
diff --git a/sys/vops/lz/aminkx.x b/sys/vops/lz/aminkx.x
new file mode 100644
index 00000000..5f0f852d
--- /dev/null
+++ b/sys/vops/lz/aminkx.x
@@ -0,0 +1,21 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMINK -- Compute the minimum of a constant and a vector (generic).
+
+procedure aminkx (a, b, c, npix)
+
+complex	a[ARB]
+complex	b
+complex	c[ARB]
+int	npix, i
+real	abs_b
+
+begin
+	abs_b = abs (b)
+
+	do i = 1, npix
+		if (abs(a[i]) <= abs_b)
+		    c[i] = a[i]
+		else
+		    c[i] = b
+end
diff --git a/sys/vops/lz/aminl.x b/sys/vops/lz/aminl.x
new file mode 100644
index 00000000..d4ae3c7e
--- /dev/null
+++ b/sys/vops/lz/aminl.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMIN -- Compute the minimum of two vectors (generic).
+
+procedure aminl (a, b, c, npix)
+
+long	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+		c[i] = min (a[i], b[i])
+end
diff --git a/sys/vops/lz/aminr.x b/sys/vops/lz/aminr.x
new file mode 100644
index 00000000..1fafcb35
--- /dev/null
+++ b/sys/vops/lz/aminr.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMIN -- Compute the minimum of two vectors (generic).
+
+procedure aminr (a, b, c, npix)
+
+real	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+		c[i] = min (a[i], b[i])
+end
diff --git a/sys/vops/lz/amins.x b/sys/vops/lz/amins.x
new file mode 100644
index 00000000..5d89f139
--- /dev/null
+++ b/sys/vops/lz/amins.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMIN -- Compute the minimum of two vectors (generic).
+
+procedure amins (a, b, c, npix)
+
+short	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+		c[i] = min (a[i], b[i])
+end
diff --git a/sys/vops/lz/aminx.x b/sys/vops/lz/aminx.x
new file mode 100644
index 00000000..591b23e4
--- /dev/null
+++ b/sys/vops/lz/aminx.x
@@ -0,0 +1,16 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMIN -- Compute the minimum of two vectors (generic).
+
+procedure aminx (a, b, c, npix)
+
+complex	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+		if (abs(a[i]) <= abs(b[i]))
+		    c[i] = a[i]
+		else
+		    c[i] = b[i]
+end
diff --git a/sys/vops/lz/amodd.x b/sys/vops/lz/amodd.x
new file mode 100644
index 00000000..fce124b6
--- /dev/null
+++ b/sys/vops/lz/amodd.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMOD -- Compute the modulus of two vectors (generic).
+
+procedure amodd (a, b, c, npix)
+
+double	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = mod (a[i], b[i])
+end
diff --git a/sys/vops/lz/amodi.x b/sys/vops/lz/amodi.x
new file mode 100644
index 00000000..f1f5a584
--- /dev/null
+++ b/sys/vops/lz/amodi.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMOD -- Compute the modulus of two vectors (generic).
+
+procedure amodi (a, b, c, npix)
+
+int	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = mod (a[i], b[i])
+end
diff --git a/sys/vops/lz/amodkd.x b/sys/vops/lz/amodkd.x
new file mode 100644
index 00000000..24db964d
--- /dev/null
+++ b/sys/vops/lz/amodkd.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMODK -- Compute the modulus of a vector by a constant (generic).
+
+procedure amodkd (a, b, c, npix)
+
+double	a[ARB]
+double	b
+double	c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = mod (a[i], b)
+end
diff --git a/sys/vops/lz/amodki.x b/sys/vops/lz/amodki.x
new file mode 100644
index 00000000..d2b71438
--- /dev/null
+++ b/sys/vops/lz/amodki.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMODK -- Compute the modulus of a vector by a constant (generic).
+
+procedure amodki (a, b, c, npix)
+
+int	a[ARB]
+int	b
+int	c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = mod (a[i], b)
+end
diff --git a/sys/vops/lz/amodkl.x b/sys/vops/lz/amodkl.x
new file mode 100644
index 00000000..ef9ec8b3
--- /dev/null
+++ b/sys/vops/lz/amodkl.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMODK -- Compute the modulus of a vector by a constant (generic).
+
+procedure amodkl (a, b, c, npix)
+
+long	a[ARB]
+long	b
+long	c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = mod (a[i], b)
+end
diff --git a/sys/vops/lz/amodkr.x b/sys/vops/lz/amodkr.x
new file mode 100644
index 00000000..9aa1bd49
--- /dev/null
+++ b/sys/vops/lz/amodkr.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMODK -- Compute the modulus of a vector by a constant (generic).
+
+procedure amodkr (a, b, c, npix)
+
+real	a[ARB]
+real	b
+real	c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = mod (a[i], b)
+end
diff --git a/sys/vops/lz/amodks.x b/sys/vops/lz/amodks.x
new file mode 100644
index 00000000..be5b719c
--- /dev/null
+++ b/sys/vops/lz/amodks.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMODK -- Compute the modulus of a vector by a constant (generic).
+
+procedure amodks (a, b, c, npix)
+
+short	a[ARB]
+short	b
+short	c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = mod (a[i], b)
+end
diff --git a/sys/vops/lz/amodl.x b/sys/vops/lz/amodl.x
new file mode 100644
index 00000000..5dd47d53
--- /dev/null
+++ b/sys/vops/lz/amodl.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMOD -- Compute the modulus of two vectors (generic).
+
+procedure amodl (a, b, c, npix)
+
+long	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = mod (a[i], b[i])
+end
diff --git a/sys/vops/lz/amodr.x b/sys/vops/lz/amodr.x
new file mode 100644
index 00000000..772a1e9c
--- /dev/null
+++ b/sys/vops/lz/amodr.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMOD -- Compute the modulus of two vectors (generic).
+
+procedure amodr (a, b, c, npix)
+
+real	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = mod (a[i], b[i])
+end
diff --git a/sys/vops/lz/amods.x b/sys/vops/lz/amods.x
new file mode 100644
index 00000000..490d8ec5
--- /dev/null
+++ b/sys/vops/lz/amods.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMOD -- Compute the modulus of two vectors (generic).
+
+procedure amods (a, b, c, npix)
+
+short	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = mod (a[i], b[i])
+end
diff --git a/sys/vops/lz/amovc.x b/sys/vops/lz/amovc.x
new file mode 100644
index 00000000..096d1444
--- /dev/null
+++ b/sys/vops/lz/amovc.x
@@ -0,0 +1,26 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMOV -- Copy a vector (generic).  The operation is carried out in such
+# a way that the result is the same whether or not the output vector
+# overlaps the input vector.
+
+procedure amovc (a, b, npix)
+
+char	a[ARB], b[ARB]
+int	npix, i, a_first, b_first
+
+begin
+	call zlocva (a, a_first)
+	call zlocva (b, b_first)
+
+	if (a_first == b_first)
+	    return
+
+	if (a_first < b_first) {
+	    do i = npix, 1, -1
+		b[i] = a[i]
+	} else {
+	    do i = 1, npix
+		b[i] = a[i]
+	}
+end
diff --git a/sys/vops/lz/amovd.x b/sys/vops/lz/amovd.x
new file mode 100644
index 00000000..3924f141
--- /dev/null
+++ b/sys/vops/lz/amovd.x
@@ -0,0 +1,26 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMOV -- Copy a vector (generic).  The operation is carried out in such
+# a way that the result is the same whether or not the output vector
+# overlaps the input vector.
+
+procedure amovd (a, b, npix)
+
+double	a[ARB], b[ARB]
+int	npix, i, a_first, b_first
+
+begin
+	call zlocva (a, a_first)
+	call zlocva (b, b_first)
+
+	if (a_first == b_first)
+	    return
+
+	if (a_first < b_first) {
+	    do i = npix, 1, -1
+		b[i] = a[i]
+	} else {
+	    do i = 1, npix
+		b[i] = a[i]
+	}
+end
diff --git a/sys/vops/lz/amovi.x b/sys/vops/lz/amovi.x
new file mode 100644
index 00000000..e97794c7
--- /dev/null
+++ b/sys/vops/lz/amovi.x
@@ -0,0 +1,26 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMOV -- Copy a vector (generic).  The operation is carried out in such
+# a way that the result is the same whether or not the output vector
+# overlaps the input vector.
+
+procedure amovi (a, b, npix)
+
+int	a[ARB], b[ARB]
+int	npix, i, a_first, b_first
+
+begin
+	call zlocva (a, a_first)
+	call zlocva (b, b_first)
+
+	if (a_first == b_first)
+	    return
+
+	if (a_first < b_first) {
+	    do i = npix, 1, -1
+		b[i] = a[i]
+	} else {
+	    do i = 1, npix
+		b[i] = a[i]
+	}
+end
diff --git a/sys/vops/lz/amovkc.x b/sys/vops/lz/amovkc.x
new file mode 100644
index 00000000..9be3a496
--- /dev/null
+++ b/sys/vops/lz/amovkc.x
@@ -0,0 +1,14 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMOVK -- Copy a constant into a vector (generic).
+
+procedure amovkc (a, b, npix)
+
+char	a
+char	b[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = a
+end
diff --git a/sys/vops/lz/amovkd.x b/sys/vops/lz/amovkd.x
new file mode 100644
index 00000000..4d8eaecd
--- /dev/null
+++ b/sys/vops/lz/amovkd.x
@@ -0,0 +1,14 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMOVK -- Copy a constant into a vector (generic).
+
+procedure amovkd (a, b, npix)
+
+double	a
+double	b[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = a
+end
diff --git a/sys/vops/lz/amovki.x b/sys/vops/lz/amovki.x
new file mode 100644
index 00000000..67556a23
--- /dev/null
+++ b/sys/vops/lz/amovki.x
@@ -0,0 +1,14 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMOVK -- Copy a constant into a vector (generic).
+
+procedure amovki (a, b, npix)
+
+int	a
+int	b[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = a
+end
diff --git a/sys/vops/lz/amovkl.x b/sys/vops/lz/amovkl.x
new file mode 100644
index 00000000..62c96668
--- /dev/null
+++ b/sys/vops/lz/amovkl.x
@@ -0,0 +1,14 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMOVK -- Copy a constant into a vector (generic).
+
+procedure amovkl (a, b, npix)
+
+long	a
+long	b[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = a
+end
diff --git a/sys/vops/lz/amovkr.x b/sys/vops/lz/amovkr.x
new file mode 100644
index 00000000..feb34a5c
--- /dev/null
+++ b/sys/vops/lz/amovkr.x
@@ -0,0 +1,14 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMOVK -- Copy a constant into a vector (generic).
+
+procedure amovkr (a, b, npix)
+
+real	a
+real	b[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = a
+end
diff --git a/sys/vops/lz/amovks.x b/sys/vops/lz/amovks.x
new file mode 100644
index 00000000..3beff9af
--- /dev/null
+++ b/sys/vops/lz/amovks.x
@@ -0,0 +1,14 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMOVK -- Copy a constant into a vector (generic).
+
+procedure amovks (a, b, npix)
+
+short	a
+short	b[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = a
+end
diff --git a/sys/vops/lz/amovkx.x b/sys/vops/lz/amovkx.x
new file mode 100644
index 00000000..acf90c91
--- /dev/null
+++ b/sys/vops/lz/amovkx.x
@@ -0,0 +1,14 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMOVK -- Copy a constant into a vector (generic).
+
+procedure amovkx (a, b, npix)
+
+complex	a
+complex	b[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = a
+end
diff --git a/sys/vops/lz/amovl.x b/sys/vops/lz/amovl.x
new file mode 100644
index 00000000..4cec6bbd
--- /dev/null
+++ b/sys/vops/lz/amovl.x
@@ -0,0 +1,26 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMOV -- Copy a vector (generic).  The operation is carried out in such
+# a way that the result is the same whether or not the output vector
+# overlaps the input vector.
+
+procedure amovl (a, b, npix)
+
+long	a[ARB], b[ARB]
+int	npix, i, a_first, b_first
+
+begin
+	call zlocva (a, a_first)
+	call zlocva (b, b_first)
+
+	if (a_first == b_first)
+	    return
+
+	if (a_first < b_first) {
+	    do i = npix, 1, -1
+		b[i] = a[i]
+	} else {
+	    do i = 1, npix
+		b[i] = a[i]
+	}
+end
diff --git a/sys/vops/lz/amovr.x b/sys/vops/lz/amovr.x
new file mode 100644
index 00000000..9d6aa8cb
--- /dev/null
+++ b/sys/vops/lz/amovr.x
@@ -0,0 +1,26 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMOV -- Copy a vector (generic).  The operation is carried out in such
+# a way that the result is the same whether or not the output vector
+# overlaps the input vector.
+
+procedure amovr (a, b, npix)
+
+real	a[ARB], b[ARB]
+int	npix, i, a_first, b_first
+
+begin
+	call zlocva (a, a_first)
+	call zlocva (b, b_first)
+
+	if (a_first == b_first)
+	    return
+
+	if (a_first < b_first) {
+	    do i = npix, 1, -1
+		b[i] = a[i]
+	} else {
+	    do i = 1, npix
+		b[i] = a[i]
+	}
+end
diff --git a/sys/vops/lz/amovs.x b/sys/vops/lz/amovs.x
new file mode 100644
index 00000000..9feaf94a
--- /dev/null
+++ b/sys/vops/lz/amovs.x
@@ -0,0 +1,26 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMOV -- Copy a vector (generic).  The operation is carried out in such
+# a way that the result is the same whether or not the output vector
+# overlaps the input vector.
+
+procedure amovs (a, b, npix)
+
+short	a[ARB], b[ARB]
+int	npix, i, a_first, b_first
+
+begin
+	call zlocva (a, a_first)
+	call zlocva (b, b_first)
+
+	if (a_first == b_first)
+	    return
+
+	if (a_first < b_first) {
+	    do i = npix, 1, -1
+		b[i] = a[i]
+	} else {
+	    do i = 1, npix
+		b[i] = a[i]
+	}
+end
diff --git a/sys/vops/lz/amovx.x b/sys/vops/lz/amovx.x
new file mode 100644
index 00000000..04d4fdf2
--- /dev/null
+++ b/sys/vops/lz/amovx.x
@@ -0,0 +1,26 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMOV -- Copy a vector (generic).  The operation is carried out in such
+# a way that the result is the same whether or not the output vector
+# overlaps the input vector.
+
+procedure amovx (a, b, npix)
+
+complex	a[ARB], b[ARB]
+int	npix, i, a_first, b_first
+
+begin
+	call zlocva (a, a_first)
+	call zlocva (b, b_first)
+
+	if (a_first == b_first)
+	    return
+
+	if (a_first < b_first) {
+	    do i = npix, 1, -1
+		b[i] = a[i]
+	} else {
+	    do i = 1, npix
+		b[i] = a[i]
+	}
+end
diff --git a/sys/vops/lz/amuld.x b/sys/vops/lz/amuld.x
new file mode 100644
index 00000000..b9a5c13b
--- /dev/null
+++ b/sys/vops/lz/amuld.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMUL -- Multiply two vectors (generic).
+
+procedure amuld (a, b, c, npix)
+
+double	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] * b[i]
+end
diff --git a/sys/vops/lz/amuli.x b/sys/vops/lz/amuli.x
new file mode 100644
index 00000000..bf2ff538
--- /dev/null
+++ b/sys/vops/lz/amuli.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMUL -- Multiply two vectors (generic).
+
+procedure amuli (a, b, c, npix)
+
+int	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] * b[i]
+end
diff --git a/sys/vops/lz/amulkd.x b/sys/vops/lz/amulkd.x
new file mode 100644
index 00000000..69f28a9a
--- /dev/null
+++ b/sys/vops/lz/amulkd.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMULK -- Multiply a constant times a vector (generic).
+
+procedure amulkd (a, b, c, npix)
+
+double	a[ARB]
+double	b
+double	c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] * b
+end
diff --git a/sys/vops/lz/amulki.x b/sys/vops/lz/amulki.x
new file mode 100644
index 00000000..773a9a12
--- /dev/null
+++ b/sys/vops/lz/amulki.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMULK -- Multiply a constant times a vector (generic).
+
+procedure amulki (a, b, c, npix)
+
+int	a[ARB]
+int	b
+int	c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] * b
+end
diff --git a/sys/vops/lz/amulkl.x b/sys/vops/lz/amulkl.x
new file mode 100644
index 00000000..69cef4c0
--- /dev/null
+++ b/sys/vops/lz/amulkl.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMULK -- Multiply a constant times a vector (generic).
+
+procedure amulkl (a, b, c, npix)
+
+long	a[ARB]
+long	b
+long	c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] * b
+end
diff --git a/sys/vops/lz/amulkr.x b/sys/vops/lz/amulkr.x
new file mode 100644
index 00000000..71cac10c
--- /dev/null
+++ b/sys/vops/lz/amulkr.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMULK -- Multiply a constant times a vector (generic).
+
+procedure amulkr (a, b, c, npix)
+
+real	a[ARB]
+real	b
+real	c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] * b
+end
diff --git a/sys/vops/lz/amulks.x b/sys/vops/lz/amulks.x
new file mode 100644
index 00000000..28f6d4ec
--- /dev/null
+++ b/sys/vops/lz/amulks.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMULK -- Multiply a constant times a vector (generic).
+
+procedure amulks (a, b, c, npix)
+
+short	a[ARB]
+short	b
+short	c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] * b
+end
diff --git a/sys/vops/lz/amulkx.x b/sys/vops/lz/amulkx.x
new file mode 100644
index 00000000..c3fe3a36
--- /dev/null
+++ b/sys/vops/lz/amulkx.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMULK -- Multiply a constant times a vector (generic).
+
+procedure amulkx (a, b, c, npix)
+
+complex	a[ARB]
+complex	b
+complex	c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] * b
+end
diff --git a/sys/vops/lz/amull.x b/sys/vops/lz/amull.x
new file mode 100644
index 00000000..bb913fe2
--- /dev/null
+++ b/sys/vops/lz/amull.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMUL -- Multiply two vectors (generic).
+
+procedure amull (a, b, c, npix)
+
+long	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] * b[i]
+end
diff --git a/sys/vops/lz/amulr.x b/sys/vops/lz/amulr.x
new file mode 100644
index 00000000..fe7b204b
--- /dev/null
+++ b/sys/vops/lz/amulr.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMUL -- Multiply two vectors (generic).
+
+procedure amulr (a, b, c, npix)
+
+real	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] * b[i]
+end
diff --git a/sys/vops/lz/amuls.x b/sys/vops/lz/amuls.x
new file mode 100644
index 00000000..ceb5854e
--- /dev/null
+++ b/sys/vops/lz/amuls.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMUL -- Multiply two vectors (generic).
+
+procedure amuls (a, b, c, npix)
+
+short	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] * b[i]
+end
diff --git a/sys/vops/lz/amulx.x b/sys/vops/lz/amulx.x
new file mode 100644
index 00000000..1b9aa3dc
--- /dev/null
+++ b/sys/vops/lz/amulx.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AMUL -- Multiply two vectors (generic).
+
+procedure amulx (a, b, c, npix)
+
+complex	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] * b[i]
+end
diff --git a/sys/vops/lz/anegd.x b/sys/vops/lz/anegd.x
new file mode 100644
index 00000000..d681464e
--- /dev/null
+++ b/sys/vops/lz/anegd.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ANEG -- Compute the arithmetic negation of a vector (generic).
+
+procedure anegd (a, b, npix)
+
+double	a[ARB], b[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = -a[i]
+end
diff --git a/sys/vops/lz/anegi.x b/sys/vops/lz/anegi.x
new file mode 100644
index 00000000..d1221376
--- /dev/null
+++ b/sys/vops/lz/anegi.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ANEG -- Compute the arithmetic negation of a vector (generic).
+
+procedure anegi (a, b, npix)
+
+int	a[ARB], b[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = -a[i]
+end
diff --git a/sys/vops/lz/anegl.x b/sys/vops/lz/anegl.x
new file mode 100644
index 00000000..e3ab64f4
--- /dev/null
+++ b/sys/vops/lz/anegl.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ANEG -- Compute the arithmetic negation of a vector (generic).
+
+procedure anegl (a, b, npix)
+
+long	a[ARB], b[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = -a[i]
+end
diff --git a/sys/vops/lz/anegr.x b/sys/vops/lz/anegr.x
new file mode 100644
index 00000000..449da1b0
--- /dev/null
+++ b/sys/vops/lz/anegr.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ANEG -- Compute the arithmetic negation of a vector (generic).
+
+procedure anegr (a, b, npix)
+
+real	a[ARB], b[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = -a[i]
+end
diff --git a/sys/vops/lz/anegs.x b/sys/vops/lz/anegs.x
new file mode 100644
index 00000000..7b8f320e
--- /dev/null
+++ b/sys/vops/lz/anegs.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ANEG -- Compute the arithmetic negation of a vector (generic).
+
+procedure anegs (a, b, npix)
+
+short	a[ARB], b[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = -a[i]
+end
diff --git a/sys/vops/lz/anegx.x b/sys/vops/lz/anegx.x
new file mode 100644
index 00000000..8f958084
--- /dev/null
+++ b/sys/vops/lz/anegx.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ANEG -- Compute the arithmetic negation of a vector (generic).
+
+procedure anegx (a, b, npix)
+
+complex	a[ARB], b[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    b[i] = -a[i]
+end
diff --git a/sys/vops/lz/anoti.x b/sys/vops/lz/anoti.x
new file mode 100644
index 00000000..867a8c92
--- /dev/null
+++ b/sys/vops/lz/anoti.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ANOT -- Compute the bitwise boolean complement of a vector (generic).
+
+procedure anoti (a, b, npix)
+
+int	a[ARB], b[ARB]
+int	npix, i
+int	not()
+
+begin
+	do i = 1, npix {
+		b[i] = not (a[i])
+	}
+end
diff --git a/sys/vops/lz/anotl.x b/sys/vops/lz/anotl.x
new file mode 100644
index 00000000..3ecb0fce
--- /dev/null
+++ b/sys/vops/lz/anotl.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ANOT -- Compute the bitwise boolean complement of a vector (generic).
+
+procedure anotl (a, b, npix)
+
+long	a[ARB], b[ARB]
+int	npix, i
+long	notl()
+
+begin
+	do i = 1, npix {
+		b[i] = notl (a[i])
+	}
+end
diff --git a/sys/vops/lz/anots.x b/sys/vops/lz/anots.x
new file mode 100644
index 00000000..4c952636
--- /dev/null
+++ b/sys/vops/lz/anots.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ANOT -- Compute the bitwise boolean complement of a vector (generic).
+
+procedure anots (a, b, npix)
+
+short	a[ARB], b[ARB]
+int	npix, i
+short	nots()
+
+begin
+	do i = 1, npix {
+		b[i] = nots (a[i])
+	}
+end
diff --git a/sys/vops/lz/apkxd.x b/sys/vops/lz/apkxd.x
new file mode 100644
index 00000000..7c489491
--- /dev/null
+++ b/sys/vops/lz/apkxd.x
@@ -0,0 +1,16 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# APKX -- Generate a type COMPLEX output vector given the real and imaginary
+# components as input vectors.
+
+procedure apkxd (a, b, c, npix)
+
+double	a[ARB]			# real component
+double	b[ARB]			# imaginary component
+complex	c[ARB]			# output vector
+int	npix, i
+
+begin
+	do i = 1, npix
+		c[i] = complex (real(a[i]), real(b[i]))
+end
diff --git a/sys/vops/lz/apkxi.x b/sys/vops/lz/apkxi.x
new file mode 100644
index 00000000..c03a0883
--- /dev/null
+++ b/sys/vops/lz/apkxi.x
@@ -0,0 +1,16 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# APKX -- Generate a type COMPLEX output vector given the real and imaginary
+# components as input vectors.
+
+procedure apkxi (a, b, c, npix)
+
+int	a[ARB]			# real component
+int	b[ARB]			# imaginary component
+complex	c[ARB]			# output vector
+int	npix, i
+
+begin
+	do i = 1, npix
+		c[i] = complex (real(a[i]), real(b[i]))
+end
diff --git a/sys/vops/lz/apkxl.x b/sys/vops/lz/apkxl.x
new file mode 100644
index 00000000..5af1f9e0
--- /dev/null
+++ b/sys/vops/lz/apkxl.x
@@ -0,0 +1,16 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# APKX -- Generate a type COMPLEX output vector given the real and imaginary
+# components as input vectors.
+
+procedure apkxl (a, b, c, npix)
+
+long	a[ARB]			# real component
+long	b[ARB]			# imaginary component
+complex	c[ARB]			# output vector
+int	npix, i
+
+begin
+	do i = 1, npix
+		c[i] = complex (real(a[i]), real(b[i]))
+end
diff --git a/sys/vops/lz/apkxr.x b/sys/vops/lz/apkxr.x
new file mode 100644
index 00000000..aba0261a
--- /dev/null
+++ b/sys/vops/lz/apkxr.x
@@ -0,0 +1,16 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# APKX -- Generate a type COMPLEX output vector given the real and imaginary
+# components as input vectors.
+
+procedure apkxr (a, b, c, npix)
+
+real	a[ARB]			# real component
+real	b[ARB]			# imaginary component
+complex	c[ARB]			# output vector
+int	npix, i
+
+begin
+	do i = 1, npix
+		c[i] = complex (real(a[i]), real(b[i]))
+end
diff --git a/sys/vops/lz/apkxs.x b/sys/vops/lz/apkxs.x
new file mode 100644
index 00000000..178683a9
--- /dev/null
+++ b/sys/vops/lz/apkxs.x
@@ -0,0 +1,16 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# APKX -- Generate a type COMPLEX output vector given the real and imaginary
+# components as input vectors.
+
+procedure apkxs (a, b, c, npix)
+
+short	a[ARB]			# real component
+short	b[ARB]			# imaginary component
+complex	c[ARB]			# output vector
+int	npix, i
+
+begin
+	do i = 1, npix
+		c[i] = complex (real(a[i]), real(b[i]))
+end
diff --git a/sys/vops/lz/apkxx.x b/sys/vops/lz/apkxx.x
new file mode 100644
index 00000000..9baef047
--- /dev/null
+++ b/sys/vops/lz/apkxx.x
@@ -0,0 +1,16 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# APKX -- Generate a type COMPLEX output vector given the real and imaginary
+# components as input vectors.
+
+procedure apkxx (a, b, c, npix)
+
+complex	a[ARB]			# real component
+complex	b[ARB]			# imaginary component
+complex	c[ARB]			# output vector
+int	npix, i
+
+begin
+	do i = 1, npix
+		c[i] = complex (real(a[i]), aimag(b[i]))
+end
diff --git a/sys/vops/lz/apold.x b/sys/vops/lz/apold.x
new file mode 100644
index 00000000..885ed4fe
--- /dev/null
+++ b/sys/vops/lz/apold.x
@@ -0,0 +1,25 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# APOL -- Evaluate a polynomial at X, given the coefficients of the polynomial
+# in COEFF and returning the computed value as the function value.
+
+double procedure apold (x, coeff, ncoeff)
+
+double	x		# point at which the polynomial is to be evaluated
+double	coeff[ncoeff]	# coefficients of the polynomial, lower orders first
+int	ncoeff
+
+int	i
+double	pow, sum
+
+begin
+	sum = coeff[1]
+	pow = x
+
+	do i = 2, ncoeff {
+	    sum = sum + pow * coeff[i]
+	    pow = pow * x
+	}
+
+	return (sum)
+end
diff --git a/sys/vops/lz/apolr.x b/sys/vops/lz/apolr.x
new file mode 100644
index 00000000..22912021
--- /dev/null
+++ b/sys/vops/lz/apolr.x
@@ -0,0 +1,25 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# APOL -- Evaluate a polynomial at X, given the coefficients of the polynomial
+# in COEFF and returning the computed value as the function value.
+
+real procedure apolr (x, coeff, ncoeff)
+
+real	x		# point at which the polynomial is to be evaluated
+real	coeff[ncoeff]	# coefficients of the polynomial, lower orders first
+int	ncoeff
+
+int	i
+real	pow, sum
+
+begin
+	sum = coeff[1]
+	pow = x
+
+	do i = 2, ncoeff {
+	    sum = sum + pow * coeff[i]
+	    pow = pow * x
+	}
+
+	return (sum)
+end
diff --git a/sys/vops/lz/apowd.x b/sys/vops/lz/apowd.x
new file mode 100644
index 00000000..2f277935
--- /dev/null
+++ b/sys/vops/lz/apowd.x
@@ -0,0 +1,14 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# APOW -- Compute a ** b, where b is of type INT (generic).
+
+procedure apowd (a, b, c, npix)
+
+double	a[ARB], c[ARB]
+int	b[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] ** b[i]
+end
diff --git a/sys/vops/lz/apowi.x b/sys/vops/lz/apowi.x
new file mode 100644
index 00000000..27d587f9
--- /dev/null
+++ b/sys/vops/lz/apowi.x
@@ -0,0 +1,14 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# APOW -- Compute a ** b, where b is of type INT (generic).
+
+procedure apowi (a, b, c, npix)
+
+int	a[ARB], c[ARB]
+int	b[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] ** b[i]
+end
diff --git a/sys/vops/lz/apowkd.x b/sys/vops/lz/apowkd.x
new file mode 100644
index 00000000..8aee1a87
--- /dev/null
+++ b/sys/vops/lz/apowkd.x
@@ -0,0 +1,34 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# APOWK -- Compute a ** b, where b is a constant of type INT (generic).
+
+procedure apowkd (a, b, c, npix)
+
+double	a[ARB], c[ARB]
+int	b
+int	npix, i
+
+begin
+	# Optimize the code for the various special cases.  We assume that the
+	# compiler is intelligent enough to recognize the special cases if the
+	# power is expressed as an integer constant.
+
+	switch (b) {
+	case 0:
+	    call amovkd (1.0D0, c, npix)
+	case 1:
+	    call amovd (a, c, npix)
+	case 2:
+	    do i = 1, npix
+		c[i] = a[i] ** 2
+	case 3:
+	    do i = 1, npix
+		c[i] = a[i] ** 3
+	case 4:
+	    do i = 1, npix
+		c[i] = a[i] ** 4
+	default:
+	    do i = 1, npix
+		c[i] = a[i] ** b
+	}
+end
diff --git a/sys/vops/lz/apowki.x b/sys/vops/lz/apowki.x
new file mode 100644
index 00000000..1b756bca
--- /dev/null
+++ b/sys/vops/lz/apowki.x
@@ -0,0 +1,34 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# APOWK -- Compute a ** b, where b is a constant of type INT (generic).
+
+procedure apowki (a, b, c, npix)
+
+int	a[ARB], c[ARB]
+int	b
+int	npix, i
+
+begin
+	# Optimize the code for the various special cases.  We assume that the
+	# compiler is intelligent enough to recognize the special cases if the
+	# power is expressed as an integer constant.
+
+	switch (b) {
+	case 0:
+	    call amovki (1, c, npix)
+	case 1:
+	    call amovi (a, c, npix)
+	case 2:
+	    do i = 1, npix
+		c[i] = a[i] ** 2
+	case 3:
+	    do i = 1, npix
+		c[i] = a[i] ** 3
+	case 4:
+	    do i = 1, npix
+		c[i] = a[i] ** 4
+	default:
+	    do i = 1, npix
+		c[i] = a[i] ** b
+	}
+end
diff --git a/sys/vops/lz/apowkl.x b/sys/vops/lz/apowkl.x
new file mode 100644
index 00000000..c7247f3e
--- /dev/null
+++ b/sys/vops/lz/apowkl.x
@@ -0,0 +1,34 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# APOWK -- Compute a ** b, where b is a constant of type INT (generic).
+
+procedure apowkl (a, b, c, npix)
+
+long	a[ARB], c[ARB]
+int	b
+int	npix, i
+
+begin
+	# Optimize the code for the various special cases.  We assume that the
+	# compiler is intelligent enough to recognize the special cases if the
+	# power is expressed as an integer constant.
+
+	switch (b) {
+	case 0:
+	    call amovkl (1, c, npix)
+	case 1:
+	    call amovl (a, c, npix)
+	case 2:
+	    do i = 1, npix
+		c[i] = a[i] ** 2
+	case 3:
+	    do i = 1, npix
+		c[i] = a[i] ** 3
+	case 4:
+	    do i = 1, npix
+		c[i] = a[i] ** 4
+	default:
+	    do i = 1, npix
+		c[i] = a[i] ** b
+	}
+end
diff --git a/sys/vops/lz/apowkr.x b/sys/vops/lz/apowkr.x
new file mode 100644
index 00000000..b22be6b7
--- /dev/null
+++ b/sys/vops/lz/apowkr.x
@@ -0,0 +1,34 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# APOWK -- Compute a ** b, where b is a constant of type INT (generic).
+
+procedure apowkr (a, b, c, npix)
+
+real	a[ARB], c[ARB]
+int	b
+int	npix, i
+
+begin
+	# Optimize the code for the various special cases.  We assume that the
+	# compiler is intelligent enough to recognize the special cases if the
+	# power is expressed as an integer constant.
+
+	switch (b) {
+	case 0:
+	    call amovkr (1.0, c, npix)
+	case 1:
+	    call amovr (a, c, npix)
+	case 2:
+	    do i = 1, npix
+		c[i] = a[i] ** 2
+	case 3:
+	    do i = 1, npix
+		c[i] = a[i] ** 3
+	case 4:
+	    do i = 1, npix
+		c[i] = a[i] ** 4
+	default:
+	    do i = 1, npix
+		c[i] = a[i] ** b
+	}
+end
diff --git a/sys/vops/lz/apowks.x b/sys/vops/lz/apowks.x
new file mode 100644
index 00000000..f656115a
--- /dev/null
+++ b/sys/vops/lz/apowks.x
@@ -0,0 +1,34 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# APOWK -- Compute a ** b, where b is a constant of type INT (generic).
+
+procedure apowks (a, b, c, npix)
+
+short	a[ARB], c[ARB]
+int	b
+int	npix, i
+
+begin
+	# Optimize the code for the various special cases.  We assume that the
+	# compiler is intelligent enough to recognize the special cases if the
+	# power is expressed as an integer constant.
+
+	switch (b) {
+	case 0:
+	    call amovks (1, c, npix)
+	case 1:
+	    call amovs (a, c, npix)
+	case 2:
+	    do i = 1, npix
+		c[i] = a[i] ** 2
+	case 3:
+	    do i = 1, npix
+		c[i] = a[i] ** 3
+	case 4:
+	    do i = 1, npix
+		c[i] = a[i] ** 4
+	default:
+	    do i = 1, npix
+		c[i] = a[i] ** b
+	}
+end
diff --git a/sys/vops/lz/apowkx.x b/sys/vops/lz/apowkx.x
new file mode 100644
index 00000000..461353be
--- /dev/null
+++ b/sys/vops/lz/apowkx.x
@@ -0,0 +1,34 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# APOWK -- Compute a ** b, where b is a constant of type INT (generic).
+
+procedure apowkx (a, b, c, npix)
+
+complex	a[ARB], c[ARB]
+int	b
+int	npix, i
+
+begin
+	# Optimize the code for the various special cases.  We assume that the
+	# compiler is intelligent enough to recognize the special cases if the
+	# power is expressed as an integer constant.
+
+	switch (b) {
+	case 0:
+	    call amovkx ((1,1), c, npix)
+	case 1:
+	    call amovx (a, c, npix)
+	case 2:
+	    do i = 1, npix
+		c[i] = a[i] ** 2
+	case 3:
+	    do i = 1, npix
+		c[i] = a[i] ** 3
+	case 4:
+	    do i = 1, npix
+		c[i] = a[i] ** 4
+	default:
+	    do i = 1, npix
+		c[i] = a[i] ** b
+	}
+end
diff --git a/sys/vops/lz/apowl.x b/sys/vops/lz/apowl.x
new file mode 100644
index 00000000..28cd171f
--- /dev/null
+++ b/sys/vops/lz/apowl.x
@@ -0,0 +1,14 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# APOW -- Compute a ** b, where b is of type INT (generic).
+
+procedure apowl (a, b, c, npix)
+
+long	a[ARB], c[ARB]
+int	b[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] ** b[i]
+end
diff --git a/sys/vops/lz/apowr.x b/sys/vops/lz/apowr.x
new file mode 100644
index 00000000..7d80443f
--- /dev/null
+++ b/sys/vops/lz/apowr.x
@@ -0,0 +1,14 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# APOW -- Compute a ** b, where b is of type INT (generic).
+
+procedure apowr (a, b, c, npix)
+
+real	a[ARB], c[ARB]
+int	b[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] ** b[i]
+end
diff --git a/sys/vops/lz/apows.x b/sys/vops/lz/apows.x
new file mode 100644
index 00000000..de128595
--- /dev/null
+++ b/sys/vops/lz/apows.x
@@ -0,0 +1,14 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# APOW -- Compute a ** b, where b is of type INT (generic).
+
+procedure apows (a, b, c, npix)
+
+short	a[ARB], c[ARB]
+int	b[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] ** b[i]
+end
diff --git a/sys/vops/lz/apowx.x b/sys/vops/lz/apowx.x
new file mode 100644
index 00000000..77f7814d
--- /dev/null
+++ b/sys/vops/lz/apowx.x
@@ -0,0 +1,14 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# APOW -- Compute a ** b, where b is of type INT (generic).
+
+procedure apowx (a, b, c, npix)
+
+complex	a[ARB], c[ARB]
+int	b[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] ** b[i]
+end
diff --git a/sys/vops/lz/aravd.x b/sys/vops/lz/aravd.x
new file mode 100644
index 00000000..7b454fd3
--- /dev/null
+++ b/sys/vops/lz/aravd.x
@@ -0,0 +1,44 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<mach.h>
+
+# ARAV -- Compute the mean and standard deviation of a sample array by
+# iteratively rejecting points further than KSIG from the mean.  If the
+# value of KSIG is given as 0.0, a cutoff value will be automatically
+# calculated from the standard deviation and number of points in the sample.
+# The number of pixels remaining in the sample upon termination is returned
+# as the function value.
+
+int procedure aravd (a, npix, mean, sigma, ksig)
+
+double	a[ARB]			# input data array
+double	mean, sigma, ksig, deviation, lcut, hcut, lgpx
+int	npix, ngpix, old_ngpix, awvgd()
+
+begin
+	lcut = -MAX_REAL				# no rejection to start
+	hcut =  MAX_REAL
+	ngpix = MAX_INT
+
+	# Iteratively compute mean, sigma and reject outliers until no
+	# more pixels are rejected, or until there are no more pixels.
+
+	repeat {
+	    old_ngpix = ngpix
+	    ngpix = awvgd (a, npix, mean, sigma, lcut, hcut)
+		if (ngpix <= 1 || sigma <= EPSILOND)
+		    break
+
+	    if (ksig == 0.0) {				# Chauvenet's relation
+		lgpx = log10 (real(ngpix))
+		deviation = (lgpx * (-0.1042 * lgpx + 1.1695) + .8895) * sigma
+	    } else
+		deviation = sigma * abs(ksig)
+
+	    lcut = mean - deviation			# compute window
+	    hcut = mean + deviation
+
+	} until (ngpix >= old_ngpix)
+
+	return (ngpix)
+end
diff --git a/sys/vops/lz/aravi.x b/sys/vops/lz/aravi.x
new file mode 100644
index 00000000..865e4ecb
--- /dev/null
+++ b/sys/vops/lz/aravi.x
@@ -0,0 +1,44 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<mach.h>
+
+# ARAV -- Compute the mean and standard deviation of a sample array by
+# iteratively rejecting points further than KSIG from the mean.  If the
+# value of KSIG is given as 0.0, a cutoff value will be automatically
+# calculated from the standard deviation and number of points in the sample.
+# The number of pixels remaining in the sample upon termination is returned
+# as the function value.
+
+int procedure aravi (a, npix, mean, sigma, ksig)
+
+int	a[ARB]			# input data array
+real	mean, sigma, ksig, deviation, lcut, hcut, lgpx
+int	npix, ngpix, old_ngpix, awvgi()
+
+begin
+	lcut = -MAX_REAL				# no rejection to start
+	hcut =  MAX_REAL
+	ngpix = MAX_INT
+
+	# Iteratively compute mean, sigma and reject outliers until no
+	# more pixels are rejected, or until there are no more pixels.
+
+	repeat {
+	    old_ngpix = ngpix
+	    ngpix = awvgi (a, npix, mean, sigma, lcut, hcut)
+		if (ngpix <= 1 || sigma <= EPSILONR)
+		    break
+
+	    if (ksig == 0.0) {				# Chauvenet's relation
+		lgpx = log10 (real(ngpix))
+		deviation = (lgpx * (-0.1042 * lgpx + 1.1695) + .8895) * sigma
+	    } else
+		deviation = sigma * abs(ksig)
+
+	    lcut = mean - deviation			# compute window
+	    hcut = mean + deviation
+
+	} until (ngpix >= old_ngpix)
+
+	return (ngpix)
+end
diff --git a/sys/vops/lz/aravl.x b/sys/vops/lz/aravl.x
new file mode 100644
index 00000000..519cd1c8
--- /dev/null
+++ b/sys/vops/lz/aravl.x
@@ -0,0 +1,44 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<mach.h>
+
+# ARAV -- Compute the mean and standard deviation of a sample array by
+# iteratively rejecting points further than KSIG from the mean.  If the
+# value of KSIG is given as 0.0, a cutoff value will be automatically
+# calculated from the standard deviation and number of points in the sample.
+# The number of pixels remaining in the sample upon termination is returned
+# as the function value.
+
+int procedure aravl (a, npix, mean, sigma, ksig)
+
+long	a[ARB]			# input data array
+double	mean, sigma, ksig, deviation, lcut, hcut, lgpx
+int	npix, ngpix, old_ngpix, awvgl()
+
+begin
+	lcut = -MAX_REAL				# no rejection to start
+	hcut =  MAX_REAL
+	ngpix = MAX_INT
+
+	# Iteratively compute mean, sigma and reject outliers until no
+	# more pixels are rejected, or until there are no more pixels.
+
+	repeat {
+	    old_ngpix = ngpix
+	    ngpix = awvgl (a, npix, mean, sigma, lcut, hcut)
+		if (ngpix <= 1 || sigma <= EPSILOND)
+		    break
+
+	    if (ksig == 0.0) {				# Chauvenet's relation
+		lgpx = log10 (real(ngpix))
+		deviation = (lgpx * (-0.1042 * lgpx + 1.1695) + .8895) * sigma
+	    } else
+		deviation = sigma * abs(ksig)
+
+	    lcut = mean - deviation			# compute window
+	    hcut = mean + deviation
+
+	} until (ngpix >= old_ngpix)
+
+	return (ngpix)
+end
diff --git a/sys/vops/lz/aravr.x b/sys/vops/lz/aravr.x
new file mode 100644
index 00000000..c3f0fb8f
--- /dev/null
+++ b/sys/vops/lz/aravr.x
@@ -0,0 +1,44 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<mach.h>
+
+# ARAV -- Compute the mean and standard deviation of a sample array by
+# iteratively rejecting points further than KSIG from the mean.  If the
+# value of KSIG is given as 0.0, a cutoff value will be automatically
+# calculated from the standard deviation and number of points in the sample.
+# The number of pixels remaining in the sample upon termination is returned
+# as the function value.
+
+int procedure aravr (a, npix, mean, sigma, ksig)
+
+real	a[ARB]			# input data array
+real	mean, sigma, ksig, deviation, lcut, hcut, lgpx
+int	npix, ngpix, old_ngpix, awvgr()
+
+begin
+	lcut = -MAX_REAL				# no rejection to start
+	hcut =  MAX_REAL
+	ngpix = MAX_INT
+
+	# Iteratively compute mean, sigma and reject outliers until no
+	# more pixels are rejected, or until there are no more pixels.
+
+	repeat {
+	    old_ngpix = ngpix
+	    ngpix = awvgr (a, npix, mean, sigma, lcut, hcut)
+		if (ngpix <= 1 || sigma <= EPSILONR)
+		    break
+
+	    if (ksig == 0.0) {				# Chauvenet's relation
+		lgpx = log10 (real(ngpix))
+		deviation = (lgpx * (-0.1042 * lgpx + 1.1695) + .8895) * sigma
+	    } else
+		deviation = sigma * abs(ksig)
+
+	    lcut = mean - deviation			# compute window
+	    hcut = mean + deviation
+
+	} until (ngpix >= old_ngpix)
+
+	return (ngpix)
+end
diff --git a/sys/vops/lz/aravs.x b/sys/vops/lz/aravs.x
new file mode 100644
index 00000000..6c734aed
--- /dev/null
+++ b/sys/vops/lz/aravs.x
@@ -0,0 +1,44 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<mach.h>
+
+# ARAV -- Compute the mean and standard deviation of a sample array by
+# iteratively rejecting points further than KSIG from the mean.  If the
+# value of KSIG is given as 0.0, a cutoff value will be automatically
+# calculated from the standard deviation and number of points in the sample.
+# The number of pixels remaining in the sample upon termination is returned
+# as the function value.
+
+int procedure aravs (a, npix, mean, sigma, ksig)
+
+short	a[ARB]			# input data array
+real	mean, sigma, ksig, deviation, lcut, hcut, lgpx
+int	npix, ngpix, old_ngpix, awvgs()
+
+begin
+	lcut = -MAX_REAL				# no rejection to start
+	hcut =  MAX_REAL
+	ngpix = MAX_INT
+
+	# Iteratively compute mean, sigma and reject outliers until no
+	# more pixels are rejected, or until there are no more pixels.
+
+	repeat {
+	    old_ngpix = ngpix
+	    ngpix = awvgs (a, npix, mean, sigma, lcut, hcut)
+		if (ngpix <= 1 || sigma <= EPSILONR)
+		    break
+
+	    if (ksig == 0.0) {				# Chauvenet's relation
+		lgpx = log10 (real(ngpix))
+		deviation = (lgpx * (-0.1042 * lgpx + 1.1695) + .8895) * sigma
+	    } else
+		deviation = sigma * abs(ksig)
+
+	    lcut = mean - deviation			# compute window
+	    hcut = mean + deviation
+
+	} until (ngpix >= old_ngpix)
+
+	return (ngpix)
+end
diff --git a/sys/vops/lz/aravx.x b/sys/vops/lz/aravx.x
new file mode 100644
index 00000000..92f7328c
--- /dev/null
+++ b/sys/vops/lz/aravx.x
@@ -0,0 +1,44 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<mach.h>
+
+# ARAV -- Compute the mean and standard deviation of a sample array by
+# iteratively rejecting points further than KSIG from the mean.  If the
+# value of KSIG is given as 0.0, a cutoff value will be automatically
+# calculated from the standard deviation and number of points in the sample.
+# The number of pixels remaining in the sample upon termination is returned
+# as the function value.
+
+int procedure aravx (a, npix, mean, sigma, ksig)
+
+complex	a[ARB]			# input data array
+real	mean, sigma, ksig, deviation, lcut, hcut, lgpx
+int	npix, ngpix, old_ngpix, awvgx()
+
+begin
+	lcut = -MAX_REAL				# no rejection to start
+	hcut =  MAX_REAL
+	ngpix = MAX_INT
+
+	# Iteratively compute mean, sigma and reject outliers until no
+	# more pixels are rejected, or until there are no more pixels.
+
+	repeat {
+	    old_ngpix = ngpix
+	    ngpix = awvgx (a, npix, mean, sigma, lcut, hcut)
+		if (ngpix <= 1 || sigma <= EPSILONR)
+		    break
+
+	    if (ksig == 0.0) {				# Chauvenet's relation
+		lgpx = log10 (real(ngpix))
+		deviation = (lgpx * (-0.1042 * lgpx + 1.1695) + .8895) * sigma
+	    } else
+		deviation = sigma * abs(ksig)
+
+	    lcut = mean - deviation			# compute window
+	    hcut = mean + deviation
+
+	} until (ngpix >= old_ngpix)
+
+	return (ngpix)
+end
diff --git a/sys/vops/lz/arcpd.x b/sys/vops/lz/arcpd.x
new file mode 100644
index 00000000..095d50d3
--- /dev/null
+++ b/sys/vops/lz/arcpd.x
@@ -0,0 +1,24 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ARCP -- Reciprocal of a constant divided by a vector.  No divide by zero
+# checking is performed.
+
+procedure arcpd (a, b, c, npix)
+
+double	a		# constant numerator
+double	b[ARB]		# vector denominator
+double	c[ARB]		# output vector
+int	npix
+int	i
+
+begin
+	if (a == 0.0D0) {
+	    call aclrd (c, npix)
+	} else if (a == 1.0D0) {
+	    do i = 1, npix
+		c[i] = 1.0D0 / b[i]
+	} else {
+	    do i = 1, npix
+		c[i] = a / b[i]
+	}
+end
diff --git a/sys/vops/lz/arcpi.x b/sys/vops/lz/arcpi.x
new file mode 100644
index 00000000..193f35e1
--- /dev/null
+++ b/sys/vops/lz/arcpi.x
@@ -0,0 +1,24 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ARCP -- Reciprocal of a constant divided by a vector.  No divide by zero
+# checking is performed.
+
+procedure arcpi (a, b, c, npix)
+
+int	a		# constant numerator
+int	b[ARB]		# vector denominator
+int	c[ARB]		# output vector
+int	npix
+int	i
+
+begin
+	if (a == 0) {
+	    call aclri (c, npix)
+	} else if (a == 1) {
+	    do i = 1, npix
+		c[i] = 1 / b[i]
+	} else {
+	    do i = 1, npix
+		c[i] = a / b[i]
+	}
+end
diff --git a/sys/vops/lz/arcpl.x b/sys/vops/lz/arcpl.x
new file mode 100644
index 00000000..3f3c5b39
--- /dev/null
+++ b/sys/vops/lz/arcpl.x
@@ -0,0 +1,24 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ARCP -- Reciprocal of a constant divided by a vector.  No divide by zero
+# checking is performed.
+
+procedure arcpl (a, b, c, npix)
+
+long	a		# constant numerator
+long	b[ARB]		# vector denominator
+long	c[ARB]		# output vector
+int	npix
+int	i
+
+begin
+	if (a == 0) {
+	    call aclrl (c, npix)
+	} else if (a == 1) {
+	    do i = 1, npix
+		c[i] = 1 / b[i]
+	} else {
+	    do i = 1, npix
+		c[i] = a / b[i]
+	}
+end
diff --git a/sys/vops/lz/arcpr.x b/sys/vops/lz/arcpr.x
new file mode 100644
index 00000000..f52a1651
--- /dev/null
+++ b/sys/vops/lz/arcpr.x
@@ -0,0 +1,24 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ARCP -- Reciprocal of a constant divided by a vector.  No divide by zero
+# checking is performed.
+
+procedure arcpr (a, b, c, npix)
+
+real	a		# constant numerator
+real	b[ARB]		# vector denominator
+real	c[ARB]		# output vector
+int	npix
+int	i
+
+begin
+	if (a == 0.0) {
+	    call aclrr (c, npix)
+	} else if (a == 1.0) {
+	    do i = 1, npix
+		c[i] = 1.0 / b[i]
+	} else {
+	    do i = 1, npix
+		c[i] = a / b[i]
+	}
+end
diff --git a/sys/vops/lz/arcps.x b/sys/vops/lz/arcps.x
new file mode 100644
index 00000000..0e0f8056
--- /dev/null
+++ b/sys/vops/lz/arcps.x
@@ -0,0 +1,24 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ARCP -- Reciprocal of a constant divided by a vector.  No divide by zero
+# checking is performed.
+
+procedure arcps (a, b, c, npix)
+
+short	a		# constant numerator
+short	b[ARB]		# vector denominator
+short	c[ARB]		# output vector
+int	npix
+int	i
+
+begin
+	if (a == 0) {
+	    call aclrs (c, npix)
+	} else if (a == 1) {
+	    do i = 1, npix
+		c[i] = 1 / b[i]
+	} else {
+	    do i = 1, npix
+		c[i] = a / b[i]
+	}
+end
diff --git a/sys/vops/lz/arcpx.x b/sys/vops/lz/arcpx.x
new file mode 100644
index 00000000..626eb6a1
--- /dev/null
+++ b/sys/vops/lz/arcpx.x
@@ -0,0 +1,24 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ARCP -- Reciprocal of a constant divided by a vector.  No divide by zero
+# checking is performed.
+
+procedure arcpx (a, b, c, npix)
+
+complex	a		# constant numerator
+complex	b[ARB]		# vector denominator
+complex	c[ARB]		# output vector
+int	npix
+int	i
+
+begin
+	if (a == (0.0,0.0)) {
+	    call aclrx (c, npix)
+	} else if (a == (1.0,1.0)) {
+	    do i = 1, npix
+		c[i] = (1.0,1.0) / b[i]
+	} else {
+	    do i = 1, npix
+		c[i] = a / b[i]
+	}
+end
diff --git a/sys/vops/lz/arczd.x b/sys/vops/lz/arczd.x
new file mode 100644
index 00000000..4f5ad6f2
--- /dev/null
+++ b/sys/vops/lz/arczd.x
@@ -0,0 +1,47 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ARCZ -- Vector reciprocal with checking for zero divisors.  If the result
+# of a divide would be undefined a user supplied function is called to get the
+# output pixel value.
+#
+# NOTE: in the interests of simplicity a somewhat arbitrary tolerance is used
+# to check for an undefined divide, i.e., a divide by zero or a divide by a
+# number small enough to cause floating point overflow.  A better way to do
+# this would be to provide a machine dependent version of this operator in
+# host$as which catches the hardware exception rather than using a comparison.
+
+procedure arczd (a, b, c, npix, errfcn)
+
+double	a			# numerator
+double	b[ARB], c[ARB]		# divisor, and output arrays
+int	npix			# number of pixels
+double	errfcn()		# user function, called on divide by zero
+
+int	i
+double	divisor
+double	tol
+extern	errfcn()
+errchk	errfcn
+
+begin
+	if (a == 0.0D0) {
+	    call aclrd (c, npix)
+	    return
+	}
+
+	    tol = 1.0D-20
+
+	do i = 1, npix {
+	    divisor = b[i]
+		# The following is most efficient when the data tends to be
+		# positive.
+
+		if (divisor < tol)
+		    if (divisor > -tol) {
+			c[i] = errfcn (a)
+			next
+		    }
+		c[i] = a / divisor
+
+	}
+end
diff --git a/sys/vops/lz/arczi.x b/sys/vops/lz/arczi.x
new file mode 100644
index 00000000..ce679742
--- /dev/null
+++ b/sys/vops/lz/arczi.x
@@ -0,0 +1,39 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ARCZ -- Vector reciprocal with checking for zero divisors.  If the result
+# of a divide would be undefined a user supplied function is called to get the
+# output pixel value.
+#
+# NOTE: in the interests of simplicity a somewhat arbitrary tolerance is used
+# to check for an undefined divide, i.e., a divide by zero or a divide by a
+# number small enough to cause floating point overflow.  A better way to do
+# this would be to provide a machine dependent version of this operator in
+# host$as which catches the hardware exception rather than using a comparison.
+
+procedure arczi (a, b, c, npix, errfcn)
+
+int	a			# numerator
+int	b[ARB], c[ARB]		# divisor, and output arrays
+int	npix			# number of pixels
+int	errfcn()		# user function, called on divide by zero
+
+int	i
+int	divisor
+extern	errfcn()
+errchk	errfcn
+
+begin
+	if (a == 0) {
+	    call aclri (c, npix)
+	    return
+	}
+
+
+	do i = 1, npix {
+	    divisor = b[i]
+		if (divisor == 0)
+		    c[i] = errfcn (a)
+		else
+		    c[i] = a / divisor
+	}
+end
diff --git a/sys/vops/lz/arczl.x b/sys/vops/lz/arczl.x
new file mode 100644
index 00000000..b89e2cbe
--- /dev/null
+++ b/sys/vops/lz/arczl.x
@@ -0,0 +1,39 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ARCZ -- Vector reciprocal with checking for zero divisors.  If the result
+# of a divide would be undefined a user supplied function is called to get the
+# output pixel value.
+#
+# NOTE: in the interests of simplicity a somewhat arbitrary tolerance is used
+# to check for an undefined divide, i.e., a divide by zero or a divide by a
+# number small enough to cause floating point overflow.  A better way to do
+# this would be to provide a machine dependent version of this operator in
+# host$as which catches the hardware exception rather than using a comparison.
+
+procedure arczl (a, b, c, npix, errfcn)
+
+long	a			# numerator
+long	b[ARB], c[ARB]		# divisor, and output arrays
+int	npix			# number of pixels
+long	errfcn()		# user function, called on divide by zero
+
+int	i
+long	divisor
+extern	errfcn()
+errchk	errfcn
+
+begin
+	if (a == 0) {
+	    call aclrl (c, npix)
+	    return
+	}
+
+
+	do i = 1, npix {
+	    divisor = b[i]
+		if (divisor == 0)
+		    c[i] = errfcn (a)
+		else
+		    c[i] = a / divisor
+	}
+end
diff --git a/sys/vops/lz/arczr.x b/sys/vops/lz/arczr.x
new file mode 100644
index 00000000..7c2e9fe2
--- /dev/null
+++ b/sys/vops/lz/arczr.x
@@ -0,0 +1,47 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ARCZ -- Vector reciprocal with checking for zero divisors.  If the result
+# of a divide would be undefined a user supplied function is called to get the
+# output pixel value.
+#
+# NOTE: in the interests of simplicity a somewhat arbitrary tolerance is used
+# to check for an undefined divide, i.e., a divide by zero or a divide by a
+# number small enough to cause floating point overflow.  A better way to do
+# this would be to provide a machine dependent version of this operator in
+# host$as which catches the hardware exception rather than using a comparison.
+
+procedure arczr (a, b, c, npix, errfcn)
+
+real	a			# numerator
+real	b[ARB], c[ARB]		# divisor, and output arrays
+int	npix			# number of pixels
+real	errfcn()		# user function, called on divide by zero
+
+int	i
+real	divisor
+real	tol
+extern	errfcn()
+errchk	errfcn
+
+begin
+	if (a == 0.0) {
+	    call aclrr (c, npix)
+	    return
+	}
+
+	    tol = 1.0E-20
+
+	do i = 1, npix {
+	    divisor = b[i]
+		# The following is most efficient when the data tends to be
+		# positive.
+
+		if (divisor < tol)
+		    if (divisor > -tol) {
+			c[i] = errfcn (a)
+			next
+		    }
+		c[i] = a / divisor
+
+	}
+end
diff --git a/sys/vops/lz/arczs.x b/sys/vops/lz/arczs.x
new file mode 100644
index 00000000..4216d38d
--- /dev/null
+++ b/sys/vops/lz/arczs.x
@@ -0,0 +1,39 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ARCZ -- Vector reciprocal with checking for zero divisors.  If the result
+# of a divide would be undefined a user supplied function is called to get the
+# output pixel value.
+#
+# NOTE: in the interests of simplicity a somewhat arbitrary tolerance is used
+# to check for an undefined divide, i.e., a divide by zero or a divide by a
+# number small enough to cause floating point overflow.  A better way to do
+# this would be to provide a machine dependent version of this operator in
+# host$as which catches the hardware exception rather than using a comparison.
+
+procedure arczs (a, b, c, npix, errfcn)
+
+short	a			# numerator
+short	b[ARB], c[ARB]		# divisor, and output arrays
+int	npix			# number of pixels
+short	errfcn()		# user function, called on divide by zero
+
+int	i
+short	divisor
+extern	errfcn()
+errchk	errfcn
+
+begin
+	if (a == 0) {
+	    call aclrs (c, npix)
+	    return
+	}
+
+
+	do i = 1, npix {
+	    divisor = b[i]
+		if (divisor == 0)
+		    c[i] = errfcn (a)
+		else
+		    c[i] = a / divisor
+	}
+end
diff --git a/sys/vops/lz/arczx.x b/sys/vops/lz/arczx.x
new file mode 100644
index 00000000..ec23595e
--- /dev/null
+++ b/sys/vops/lz/arczx.x
@@ -0,0 +1,39 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ARCZ -- Vector reciprocal with checking for zero divisors.  If the result
+# of a divide would be undefined a user supplied function is called to get the
+# output pixel value.
+#
+# NOTE: in the interests of simplicity a somewhat arbitrary tolerance is used
+# to check for an undefined divide, i.e., a divide by zero or a divide by a
+# number small enough to cause floating point overflow.  A better way to do
+# this would be to provide a machine dependent version of this operator in
+# host$as which catches the hardware exception rather than using a comparison.
+
+procedure arczx (a, b, c, npix, errfcn)
+
+complex	a			# numerator
+complex	b[ARB], c[ARB]		# divisor, and output arrays
+int	npix			# number of pixels
+complex	errfcn()		# user function, called on divide by zero
+
+int	i
+complex	divisor
+extern	errfcn()
+errchk	errfcn
+
+begin
+	if (a == (0.0,0.0)) {
+	    call aclrx (c, npix)
+	    return
+	}
+
+
+	do i = 1, npix {
+	    divisor = b[i]
+		if (divisor == (0.0,0.0))
+		    c[i] = errfcn (a)
+		else
+		    c[i] = a / divisor
+	}
+end
diff --git a/sys/vops/lz/argtd.x b/sys/vops/lz/argtd.x
new file mode 100644
index 00000000..bf12e17c
--- /dev/null
+++ b/sys/vops/lz/argtd.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ARGT -- Replace if greater than.  If A[i] is greater than CEIL replace by
+# NEWVAL.
+
+procedure argtd (a, npix, ceil, newval)
+
+double	a[ARB]
+int	npix
+double	ceil, newval
+int	i
+
+begin
+
+	do i = 1, npix
+	    if (a[i] > ceil)
+		a[i] = newval
+end
diff --git a/sys/vops/lz/argti.x b/sys/vops/lz/argti.x
new file mode 100644
index 00000000..dffdce17
--- /dev/null
+++ b/sys/vops/lz/argti.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ARGT -- Replace if greater than.  If A[i] is greater than CEIL replace by
+# NEWVAL.
+
+procedure argti (a, npix, ceil, newval)
+
+int	a[ARB]
+int	npix
+int	ceil, newval
+int	i
+
+begin
+
+	do i = 1, npix
+	    if (a[i] > ceil)
+		a[i] = newval
+end
diff --git a/sys/vops/lz/argtl.x b/sys/vops/lz/argtl.x
new file mode 100644
index 00000000..e776573c
--- /dev/null
+++ b/sys/vops/lz/argtl.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ARGT -- Replace if greater than.  If A[i] is greater than CEIL replace by
+# NEWVAL.
+
+procedure argtl (a, npix, ceil, newval)
+
+long	a[ARB]
+int	npix
+long	ceil, newval
+int	i
+
+begin
+
+	do i = 1, npix
+	    if (a[i] > ceil)
+		a[i] = newval
+end
diff --git a/sys/vops/lz/argtr.x b/sys/vops/lz/argtr.x
new file mode 100644
index 00000000..5ab107f7
--- /dev/null
+++ b/sys/vops/lz/argtr.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ARGT -- Replace if greater than.  If A[i] is greater than CEIL replace by
+# NEWVAL.
+
+procedure argtr (a, npix, ceil, newval)
+
+real	a[ARB]
+int	npix
+real	ceil, newval
+int	i
+
+begin
+
+	do i = 1, npix
+	    if (a[i] > ceil)
+		a[i] = newval
+end
diff --git a/sys/vops/lz/argts.x b/sys/vops/lz/argts.x
new file mode 100644
index 00000000..815f753f
--- /dev/null
+++ b/sys/vops/lz/argts.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ARGT -- Replace if greater than.  If A[i] is greater than CEIL replace by
+# NEWVAL.
+
+procedure argts (a, npix, ceil, newval)
+
+short	a[ARB]
+int	npix
+short	ceil, newval
+int	i
+
+begin
+
+	do i = 1, npix
+	    if (a[i] > ceil)
+		a[i] = newval
+end
diff --git a/sys/vops/lz/argtx.x b/sys/vops/lz/argtx.x
new file mode 100644
index 00000000..53253e01
--- /dev/null
+++ b/sys/vops/lz/argtx.x
@@ -0,0 +1,20 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ARGT -- Replace if greater than.  If A[i] is greater than CEIL replace by
+# NEWVAL.
+
+procedure argtx (a, npix, ceil, newval)
+
+complex	a[ARB]
+int	npix
+complex	ceil, newval
+int	i
+real	abs_ceil
+
+begin
+	abs_ceil = abs (ceil)
+
+	do i = 1, npix
+	    if (abs (a[i]) > abs_ceil)
+		a[i] = newval
+end
diff --git a/sys/vops/lz/arltd.x b/sys/vops/lz/arltd.x
new file mode 100644
index 00000000..62693331
--- /dev/null
+++ b/sys/vops/lz/arltd.x
@@ -0,0 +1,17 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ARLT -- Replace if less than.  If A[i] is less than FLOOR replace by NEWVAL.
+
+procedure arltd (a, npix, floor, newval)
+
+double	a[ARB]
+int	npix
+double	floor, newval
+int	i
+
+begin
+
+	do i = 1, npix
+	    if (a[i] < floor)
+		a[i] = newval
+end
diff --git a/sys/vops/lz/arlti.x b/sys/vops/lz/arlti.x
new file mode 100644
index 00000000..6b8ae086
--- /dev/null
+++ b/sys/vops/lz/arlti.x
@@ -0,0 +1,17 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ARLT -- Replace if less than.  If A[i] is less than FLOOR replace by NEWVAL.
+
+procedure arlti (a, npix, floor, newval)
+
+int	a[ARB]
+int	npix
+int	floor, newval
+int	i
+
+begin
+
+	do i = 1, npix
+	    if (a[i] < floor)
+		a[i] = newval
+end
diff --git a/sys/vops/lz/arltl.x b/sys/vops/lz/arltl.x
new file mode 100644
index 00000000..4bda96c3
--- /dev/null
+++ b/sys/vops/lz/arltl.x
@@ -0,0 +1,17 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ARLT -- Replace if less than.  If A[i] is less than FLOOR replace by NEWVAL.
+
+procedure arltl (a, npix, floor, newval)
+
+long	a[ARB]
+int	npix
+long	floor, newval
+int	i
+
+begin
+
+	do i = 1, npix
+	    if (a[i] < floor)
+		a[i] = newval
+end
diff --git a/sys/vops/lz/arltr.x b/sys/vops/lz/arltr.x
new file mode 100644
index 00000000..3b419556
--- /dev/null
+++ b/sys/vops/lz/arltr.x
@@ -0,0 +1,17 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ARLT -- Replace if less than.  If A[i] is less than FLOOR replace by NEWVAL.
+
+procedure arltr (a, npix, floor, newval)
+
+real	a[ARB]
+int	npix
+real	floor, newval
+int	i
+
+begin
+
+	do i = 1, npix
+	    if (a[i] < floor)
+		a[i] = newval
+end
diff --git a/sys/vops/lz/arlts.x b/sys/vops/lz/arlts.x
new file mode 100644
index 00000000..ca4e0582
--- /dev/null
+++ b/sys/vops/lz/arlts.x
@@ -0,0 +1,17 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ARLT -- Replace if less than.  If A[i] is less than FLOOR replace by NEWVAL.
+
+procedure arlts (a, npix, floor, newval)
+
+short	a[ARB]
+int	npix
+short	floor, newval
+int	i
+
+begin
+
+	do i = 1, npix
+	    if (a[i] < floor)
+		a[i] = newval
+end
diff --git a/sys/vops/lz/arltx.x b/sys/vops/lz/arltx.x
new file mode 100644
index 00000000..8ea55d5f
--- /dev/null
+++ b/sys/vops/lz/arltx.x
@@ -0,0 +1,19 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ARLT -- Replace if less than.  If A[i] is less than FLOOR replace by NEWVAL.
+
+procedure arltx (a, npix, floor, newval)
+
+complex	a[ARB]
+int	npix
+complex	floor, newval
+int	i
+real	abs_floor
+
+begin
+	abs_floor = abs (floor)
+
+	do i = 1, npix
+	    if (abs (a[i]) < abs_floor)
+		a[i] = newval
+end
diff --git a/sys/vops/lz/aselc.x b/sys/vops/lz/aselc.x
new file mode 100644
index 00000000..eeed8930
--- /dev/null
+++ b/sys/vops/lz/aselc.x
@@ -0,0 +1,21 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASEL -- Vector select element.  The output vector is formed by taking
+# successive pixels from either of the two input vectors, based on the value
+# of the integer (boolean) selection vectors.  Used to implement vector
+# conditional expressions.
+
+procedure aselc (a, b, c, sel, npix)
+
+char	a[ARB], b[ARB], c[ARB]
+int	sel[ARB]			# IF sel[i] THEN a[i] ELSE b[i]
+int	npix
+int	i
+
+begin
+	do i = 1, npix
+	    if (sel[i] != 0)
+		c[i] = a[i]
+	    else
+		c[i] = b[i]
+end
diff --git a/sys/vops/lz/aseld.x b/sys/vops/lz/aseld.x
new file mode 100644
index 00000000..79758363
--- /dev/null
+++ b/sys/vops/lz/aseld.x
@@ -0,0 +1,21 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASEL -- Vector select element.  The output vector is formed by taking
+# successive pixels from either of the two input vectors, based on the value
+# of the integer (boolean) selection vectors.  Used to implement vector
+# conditional expressions.
+
+procedure aseld (a, b, c, sel, npix)
+
+double	a[ARB], b[ARB], c[ARB]
+int	sel[ARB]			# IF sel[i] THEN a[i] ELSE b[i]
+int	npix
+int	i
+
+begin
+	do i = 1, npix
+	    if (sel[i] != 0)
+		c[i] = a[i]
+	    else
+		c[i] = b[i]
+end
diff --git a/sys/vops/lz/aseli.x b/sys/vops/lz/aseli.x
new file mode 100644
index 00000000..c4a8a211
--- /dev/null
+++ b/sys/vops/lz/aseli.x
@@ -0,0 +1,21 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASEL -- Vector select element.  The output vector is formed by taking
+# successive pixels from either of the two input vectors, based on the value
+# of the integer (boolean) selection vectors.  Used to implement vector
+# conditional expressions.
+
+procedure aseli (a, b, c, sel, npix)
+
+int	a[ARB], b[ARB], c[ARB]
+int	sel[ARB]			# IF sel[i] THEN a[i] ELSE b[i]
+int	npix
+int	i
+
+begin
+	do i = 1, npix
+	    if (sel[i] != 0)
+		c[i] = a[i]
+	    else
+		c[i] = b[i]
+end
diff --git a/sys/vops/lz/aselkc.x b/sys/vops/lz/aselkc.x
new file mode 100644
index 00000000..28b5d4a2
--- /dev/null
+++ b/sys/vops/lz/aselkc.x
@@ -0,0 +1,21 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASELK -- Vector/constant select element.  The output vector is formed by
+# taking successive pixels from either of the input vector or a constant, based
+# on the value of the integer (boolean) selection vectors.  Used to implement
+# vector conditional expressions.
+
+procedure aselkc (a, b, c, sel, npix)
+
+char	a[ARB], b, c[ARB]
+int	sel[ARB]			# IF sel[i] THEN a[i] ELSE b
+int	npix
+int	i
+
+begin
+	do i = 1, npix
+	    if (sel[i] != 0)
+		c[i] = a[i]
+	    else
+		c[i] = b
+end
diff --git a/sys/vops/lz/aselkd.x b/sys/vops/lz/aselkd.x
new file mode 100644
index 00000000..f0ad7dae
--- /dev/null
+++ b/sys/vops/lz/aselkd.x
@@ -0,0 +1,21 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASELK -- Vector/constant select element.  The output vector is formed by
+# taking successive pixels from either of the input vector or a constant, based
+# on the value of the integer (boolean) selection vectors.  Used to implement
+# vector conditional expressions.
+
+procedure aselkd (a, b, c, sel, npix)
+
+double	a[ARB], b, c[ARB]
+int	sel[ARB]			# IF sel[i] THEN a[i] ELSE b
+int	npix
+int	i
+
+begin
+	do i = 1, npix
+	    if (sel[i] != 0)
+		c[i] = a[i]
+	    else
+		c[i] = b
+end
diff --git a/sys/vops/lz/aselki.x b/sys/vops/lz/aselki.x
new file mode 100644
index 00000000..a56737ab
--- /dev/null
+++ b/sys/vops/lz/aselki.x
@@ -0,0 +1,21 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASELK -- Vector/constant select element.  The output vector is formed by
+# taking successive pixels from either of the input vector or a constant, based
+# on the value of the integer (boolean) selection vectors.  Used to implement
+# vector conditional expressions.
+
+procedure aselki (a, b, c, sel, npix)
+
+int	a[ARB], b, c[ARB]
+int	sel[ARB]			# IF sel[i] THEN a[i] ELSE b
+int	npix
+int	i
+
+begin
+	do i = 1, npix
+	    if (sel[i] != 0)
+		c[i] = a[i]
+	    else
+		c[i] = b
+end
diff --git a/sys/vops/lz/aselkl.x b/sys/vops/lz/aselkl.x
new file mode 100644
index 00000000..2fbf6b23
--- /dev/null
+++ b/sys/vops/lz/aselkl.x
@@ -0,0 +1,21 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASELK -- Vector/constant select element.  The output vector is formed by
+# taking successive pixels from either of the input vector or a constant, based
+# on the value of the integer (boolean) selection vectors.  Used to implement
+# vector conditional expressions.
+
+procedure aselkl (a, b, c, sel, npix)
+
+long	a[ARB], b, c[ARB]
+int	sel[ARB]			# IF sel[i] THEN a[i] ELSE b
+int	npix
+int	i
+
+begin
+	do i = 1, npix
+	    if (sel[i] != 0)
+		c[i] = a[i]
+	    else
+		c[i] = b
+end
diff --git a/sys/vops/lz/aselkr.x b/sys/vops/lz/aselkr.x
new file mode 100644
index 00000000..702000b3
--- /dev/null
+++ b/sys/vops/lz/aselkr.x
@@ -0,0 +1,21 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASELK -- Vector/constant select element.  The output vector is formed by
+# taking successive pixels from either of the input vector or a constant, based
+# on the value of the integer (boolean) selection vectors.  Used to implement
+# vector conditional expressions.
+
+procedure aselkr (a, b, c, sel, npix)
+
+real	a[ARB], b, c[ARB]
+int	sel[ARB]			# IF sel[i] THEN a[i] ELSE b
+int	npix
+int	i
+
+begin
+	do i = 1, npix
+	    if (sel[i] != 0)
+		c[i] = a[i]
+	    else
+		c[i] = b
+end
diff --git a/sys/vops/lz/aselks.x b/sys/vops/lz/aselks.x
new file mode 100644
index 00000000..59891f15
--- /dev/null
+++ b/sys/vops/lz/aselks.x
@@ -0,0 +1,21 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASELK -- Vector/constant select element.  The output vector is formed by
+# taking successive pixels from either of the input vector or a constant, based
+# on the value of the integer (boolean) selection vectors.  Used to implement
+# vector conditional expressions.
+
+procedure aselks (a, b, c, sel, npix)
+
+short	a[ARB], b, c[ARB]
+int	sel[ARB]			# IF sel[i] THEN a[i] ELSE b
+int	npix
+int	i
+
+begin
+	do i = 1, npix
+	    if (sel[i] != 0)
+		c[i] = a[i]
+	    else
+		c[i] = b
+end
diff --git a/sys/vops/lz/aselkx.x b/sys/vops/lz/aselkx.x
new file mode 100644
index 00000000..4a4de962
--- /dev/null
+++ b/sys/vops/lz/aselkx.x
@@ -0,0 +1,21 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASELK -- Vector/constant select element.  The output vector is formed by
+# taking successive pixels from either of the input vector or a constant, based
+# on the value of the integer (boolean) selection vectors.  Used to implement
+# vector conditional expressions.
+
+procedure aselkx (a, b, c, sel, npix)
+
+complex	a[ARB], b, c[ARB]
+int	sel[ARB]			# IF sel[i] THEN a[i] ELSE b
+int	npix
+int	i
+
+begin
+	do i = 1, npix
+	    if (sel[i] != 0)
+		c[i] = a[i]
+	    else
+		c[i] = b
+end
diff --git a/sys/vops/lz/asell.x b/sys/vops/lz/asell.x
new file mode 100644
index 00000000..5b7e08a7
--- /dev/null
+++ b/sys/vops/lz/asell.x
@@ -0,0 +1,21 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASEL -- Vector select element.  The output vector is formed by taking
+# successive pixels from either of the two input vectors, based on the value
+# of the integer (boolean) selection vectors.  Used to implement vector
+# conditional expressions.
+
+procedure asell (a, b, c, sel, npix)
+
+long	a[ARB], b[ARB], c[ARB]
+int	sel[ARB]			# IF sel[i] THEN a[i] ELSE b[i]
+int	npix
+int	i
+
+begin
+	do i = 1, npix
+	    if (sel[i] != 0)
+		c[i] = a[i]
+	    else
+		c[i] = b[i]
+end
diff --git a/sys/vops/lz/aselr.x b/sys/vops/lz/aselr.x
new file mode 100644
index 00000000..3a5f7f1b
--- /dev/null
+++ b/sys/vops/lz/aselr.x
@@ -0,0 +1,21 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASEL -- Vector select element.  The output vector is formed by taking
+# successive pixels from either of the two input vectors, based on the value
+# of the integer (boolean) selection vectors.  Used to implement vector
+# conditional expressions.
+
+procedure aselr (a, b, c, sel, npix)
+
+real	a[ARB], b[ARB], c[ARB]
+int	sel[ARB]			# IF sel[i] THEN a[i] ELSE b[i]
+int	npix
+int	i
+
+begin
+	do i = 1, npix
+	    if (sel[i] != 0)
+		c[i] = a[i]
+	    else
+		c[i] = b[i]
+end
diff --git a/sys/vops/lz/asels.x b/sys/vops/lz/asels.x
new file mode 100644
index 00000000..b2118ba8
--- /dev/null
+++ b/sys/vops/lz/asels.x
@@ -0,0 +1,21 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASEL -- Vector select element.  The output vector is formed by taking
+# successive pixels from either of the two input vectors, based on the value
+# of the integer (boolean) selection vectors.  Used to implement vector
+# conditional expressions.
+
+procedure asels (a, b, c, sel, npix)
+
+short	a[ARB], b[ARB], c[ARB]
+int	sel[ARB]			# IF sel[i] THEN a[i] ELSE b[i]
+int	npix
+int	i
+
+begin
+	do i = 1, npix
+	    if (sel[i] != 0)
+		c[i] = a[i]
+	    else
+		c[i] = b[i]
+end
diff --git a/sys/vops/lz/aselx.x b/sys/vops/lz/aselx.x
new file mode 100644
index 00000000..1bd02e9a
--- /dev/null
+++ b/sys/vops/lz/aselx.x
@@ -0,0 +1,21 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASEL -- Vector select element.  The output vector is formed by taking
+# successive pixels from either of the two input vectors, based on the value
+# of the integer (boolean) selection vectors.  Used to implement vector
+# conditional expressions.
+
+procedure aselx (a, b, c, sel, npix)
+
+complex	a[ARB], b[ARB], c[ARB]
+int	sel[ARB]			# IF sel[i] THEN a[i] ELSE b[i]
+int	npix
+int	i
+
+begin
+	do i = 1, npix
+	    if (sel[i] != 0)
+		c[i] = a[i]
+	    else
+		c[i] = b[i]
+end
diff --git a/sys/vops/lz/asokc.x b/sys/vops/lz/asokc.x
new file mode 100644
index 00000000..794252f2
--- /dev/null
+++ b/sys/vops/lz/asokc.x
@@ -0,0 +1,63 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include <mach.h>
+
+# ASOK -- Select the Kth smallest element from a vector.  The algorithm used
+# is selection by tail recursion (Gonnet 1984).  In each iteration a pivot key
+# is selected (somewhat arbitrarily) from the array.  The array is then split
+# into two subarrays, those with key values less than or equal to the pivot key
+# and those with values greater than the pivot.  The size of the two subarrays
+# determines which contains the median value, and the process is repeated
+# on that subarray, and so on until all of the elements of the subarray
+# are equal, e.g., there is only one element left in the subarray.  For a
+# randomly ordered array the expected running time is O(3.38N).  The selection
+# is carried out in place, leaving the array in a partially ordered state.
+#
+# N.B.: Behaviour is O(N) if the input array is sorted.
+# N.B.: The cases ksel=1 and ksel=npix, i.e., selection of the minimum and
+# maximum values, are more efficiently handled by ALIM which is O(2N).
+#
+# Jul99 - The above algorithm was found to be pathologically slow in cases
+# where many or all elements of the array are equal.  The version of the
+# algorithm below, from Wirth, appears to avoid this problem.
+
+char procedure asokc (a, npix, ksel)
+
+char	a[ARB]			# input array
+int	npix			# number of pixels
+int	ksel			# element to be selected
+
+int	lo, up, i, j, k, dummy
+char	temp, wtemp
+
+begin
+	lo = 1
+	up = npix
+	k  = max (lo, min (up, ksel))
+
+	# while (lo < up)
+	do dummy = 1, MAX_INT {
+	    if (! (lo < up))
+		break
+
+	    temp = a[k];  i = lo;  j = up
+
+	    repeat {
+		while (a[i] < temp)
+		    i = i + 1
+		while (temp < a[j])
+		    j = j - 1
+		if (i <= j) {
+		    wtemp = a[i];  a[i] = a[j];  a[j] = wtemp
+		    i = i + 1;  j = j - 1
+		}
+	    } until (i > j)
+
+	    if (j < k)
+		lo = i
+	    if (k < i)
+		up = j
+	}
+
+	return (a[k])
+end
diff --git a/sys/vops/lz/asokd.x b/sys/vops/lz/asokd.x
new file mode 100644
index 00000000..54627469
--- /dev/null
+++ b/sys/vops/lz/asokd.x
@@ -0,0 +1,63 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include <mach.h>
+
+# ASOK -- Select the Kth smallest element from a vector.  The algorithm used
+# is selection by tail recursion (Gonnet 1984).  In each iteration a pivot key
+# is selected (somewhat arbitrarily) from the array.  The array is then split
+# into two subarrays, those with key values less than or equal to the pivot key
+# and those with values greater than the pivot.  The size of the two subarrays
+# determines which contains the median value, and the process is repeated
+# on that subarray, and so on until all of the elements of the subarray
+# are equal, e.g., there is only one element left in the subarray.  For a
+# randomly ordered array the expected running time is O(3.38N).  The selection
+# is carried out in place, leaving the array in a partially ordered state.
+#
+# N.B.: Behaviour is O(N) if the input array is sorted.
+# N.B.: The cases ksel=1 and ksel=npix, i.e., selection of the minimum and
+# maximum values, are more efficiently handled by ALIM which is O(2N).
+#
+# Jul99 - The above algorithm was found to be pathologically slow in cases
+# where many or all elements of the array are equal.  The version of the
+# algorithm below, from Wirth, appears to avoid this problem.
+
+double procedure asokd (a, npix, ksel)
+
+double	a[ARB]			# input array
+int	npix			# number of pixels
+int	ksel			# element to be selected
+
+int	lo, up, i, j, k, dummy
+double	temp, wtemp
+
+begin
+	lo = 1
+	up = npix
+	k  = max (lo, min (up, ksel))
+
+	# while (lo < up)
+	do dummy = 1, MAX_INT {
+	    if (! (lo < up))
+		break
+
+	    temp = a[k];  i = lo;  j = up
+
+	    repeat {
+		while (a[i] < temp)
+		    i = i + 1
+		while (temp < a[j])
+		    j = j - 1
+		if (i <= j) {
+		    wtemp = a[i];  a[i] = a[j];  a[j] = wtemp
+		    i = i + 1;  j = j - 1
+		}
+	    } until (i > j)
+
+	    if (j < k)
+		lo = i
+	    if (k < i)
+		up = j
+	}
+
+	return (a[k])
+end
diff --git a/sys/vops/lz/asoki.x b/sys/vops/lz/asoki.x
new file mode 100644
index 00000000..dd579ac2
--- /dev/null
+++ b/sys/vops/lz/asoki.x
@@ -0,0 +1,63 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include <mach.h>
+
+# ASOK -- Select the Kth smallest element from a vector.  The algorithm used
+# is selection by tail recursion (Gonnet 1984).  In each iteration a pivot key
+# is selected (somewhat arbitrarily) from the array.  The array is then split
+# into two subarrays, those with key values less than or equal to the pivot key
+# and those with values greater than the pivot.  The size of the two subarrays
+# determines which contains the median value, and the process is repeated
+# on that subarray, and so on until all of the elements of the subarray
+# are equal, e.g., there is only one element left in the subarray.  For a
+# randomly ordered array the expected running time is O(3.38N).  The selection
+# is carried out in place, leaving the array in a partially ordered state.
+#
+# N.B.: Behaviour is O(N) if the input array is sorted.
+# N.B.: The cases ksel=1 and ksel=npix, i.e., selection of the minimum and
+# maximum values, are more efficiently handled by ALIM which is O(2N).
+#
+# Jul99 - The above algorithm was found to be pathologically slow in cases
+# where many or all elements of the array are equal.  The version of the
+# algorithm below, from Wirth, appears to avoid this problem.
+
+int procedure asoki (a, npix, ksel)
+
+int	a[ARB]			# input array
+int	npix			# number of pixels
+int	ksel			# element to be selected
+
+int	lo, up, i, j, k, dummy
+int	temp, wtemp
+
+begin
+	lo = 1
+	up = npix
+	k  = max (lo, min (up, ksel))
+
+	# while (lo < up)
+	do dummy = 1, MAX_INT {
+	    if (! (lo < up))
+		break
+
+	    temp = a[k];  i = lo;  j = up
+
+	    repeat {
+		while (a[i] < temp)
+		    i = i + 1
+		while (temp < a[j])
+		    j = j - 1
+		if (i <= j) {
+		    wtemp = a[i];  a[i] = a[j];  a[j] = wtemp
+		    i = i + 1;  j = j - 1
+		}
+	    } until (i > j)
+
+	    if (j < k)
+		lo = i
+	    if (k < i)
+		up = j
+	}
+
+	return (a[k])
+end
diff --git a/sys/vops/lz/asokl.x b/sys/vops/lz/asokl.x
new file mode 100644
index 00000000..37adff9c
--- /dev/null
+++ b/sys/vops/lz/asokl.x
@@ -0,0 +1,63 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include <mach.h>
+
+# ASOK -- Select the Kth smallest element from a vector.  The algorithm used
+# is selection by tail recursion (Gonnet 1984).  In each iteration a pivot key
+# is selected (somewhat arbitrarily) from the array.  The array is then split
+# into two subarrays, those with key values less than or equal to the pivot key
+# and those with values greater than the pivot.  The size of the two subarrays
+# determines which contains the median value, and the process is repeated
+# on that subarray, and so on until all of the elements of the subarray
+# are equal, e.g., there is only one element left in the subarray.  For a
+# randomly ordered array the expected running time is O(3.38N).  The selection
+# is carried out in place, leaving the array in a partially ordered state.
+#
+# N.B.: Behaviour is O(N) if the input array is sorted.
+# N.B.: The cases ksel=1 and ksel=npix, i.e., selection of the minimum and
+# maximum values, are more efficiently handled by ALIM which is O(2N).
+#
+# Jul99 - The above algorithm was found to be pathologically slow in cases
+# where many or all elements of the array are equal.  The version of the
+# algorithm below, from Wirth, appears to avoid this problem.
+
+long procedure asokl (a, npix, ksel)
+
+long	a[ARB]			# input array
+int	npix			# number of pixels
+int	ksel			# element to be selected
+
+int	lo, up, i, j, k, dummy
+long	temp, wtemp
+
+begin
+	lo = 1
+	up = npix
+	k  = max (lo, min (up, ksel))
+
+	# while (lo < up)
+	do dummy = 1, MAX_INT {
+	    if (! (lo < up))
+		break
+
+	    temp = a[k];  i = lo;  j = up
+
+	    repeat {
+		while (a[i] < temp)
+		    i = i + 1
+		while (temp < a[j])
+		    j = j - 1
+		if (i <= j) {
+		    wtemp = a[i];  a[i] = a[j];  a[j] = wtemp
+		    i = i + 1;  j = j - 1
+		}
+	    } until (i > j)
+
+	    if (j < k)
+		lo = i
+	    if (k < i)
+		up = j
+	}
+
+	return (a[k])
+end
diff --git a/sys/vops/lz/asokr.x b/sys/vops/lz/asokr.x
new file mode 100644
index 00000000..420eaf65
--- /dev/null
+++ b/sys/vops/lz/asokr.x
@@ -0,0 +1,63 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include <mach.h>
+
+# ASOK -- Select the Kth smallest element from a vector.  The algorithm used
+# is selection by tail recursion (Gonnet 1984).  In each iteration a pivot key
+# is selected (somewhat arbitrarily) from the array.  The array is then split
+# into two subarrays, those with key values less than or equal to the pivot key
+# and those with values greater than the pivot.  The size of the two subarrays
+# determines which contains the median value, and the process is repeated
+# on that subarray, and so on until all of the elements of the subarray
+# are equal, e.g., there is only one element left in the subarray.  For a
+# randomly ordered array the expected running time is O(3.38N).  The selection
+# is carried out in place, leaving the array in a partially ordered state.
+#
+# N.B.: Behaviour is O(N) if the input array is sorted.
+# N.B.: The cases ksel=1 and ksel=npix, i.e., selection of the minimum and
+# maximum values, are more efficiently handled by ALIM which is O(2N).
+#
+# Jul99 - The above algorithm was found to be pathologically slow in cases
+# where many or all elements of the array are equal.  The version of the
+# algorithm below, from Wirth, appears to avoid this problem.
+
+real procedure asokr (a, npix, ksel)
+
+real	a[ARB]			# input array
+int	npix			# number of pixels
+int	ksel			# element to be selected
+
+int	lo, up, i, j, k, dummy
+real	temp, wtemp
+
+begin
+	lo = 1
+	up = npix
+	k  = max (lo, min (up, ksel))
+
+	# while (lo < up)
+	do dummy = 1, MAX_INT {
+	    if (! (lo < up))
+		break
+
+	    temp = a[k];  i = lo;  j = up
+
+	    repeat {
+		while (a[i] < temp)
+		    i = i + 1
+		while (temp < a[j])
+		    j = j - 1
+		if (i <= j) {
+		    wtemp = a[i];  a[i] = a[j];  a[j] = wtemp
+		    i = i + 1;  j = j - 1
+		}
+	    } until (i > j)
+
+	    if (j < k)
+		lo = i
+	    if (k < i)
+		up = j
+	}
+
+	return (a[k])
+end
diff --git a/sys/vops/lz/asoks.x b/sys/vops/lz/asoks.x
new file mode 100644
index 00000000..a92f4015
--- /dev/null
+++ b/sys/vops/lz/asoks.x
@@ -0,0 +1,63 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include <mach.h>
+
+# ASOK -- Select the Kth smallest element from a vector.  The algorithm used
+# is selection by tail recursion (Gonnet 1984).  In each iteration a pivot key
+# is selected (somewhat arbitrarily) from the array.  The array is then split
+# into two subarrays, those with key values less than or equal to the pivot key
+# and those with values greater than the pivot.  The size of the two subarrays
+# determines which contains the median value, and the process is repeated
+# on that subarray, and so on until all of the elements of the subarray
+# are equal, e.g., there is only one element left in the subarray.  For a
+# randomly ordered array the expected running time is O(3.38N).  The selection
+# is carried out in place, leaving the array in a partially ordered state.
+#
+# N.B.: Behaviour is O(N) if the input array is sorted.
+# N.B.: The cases ksel=1 and ksel=npix, i.e., selection of the minimum and
+# maximum values, are more efficiently handled by ALIM which is O(2N).
+#
+# Jul99 - The above algorithm was found to be pathologically slow in cases
+# where many or all elements of the array are equal.  The version of the
+# algorithm below, from Wirth, appears to avoid this problem.
+
+short procedure asoks (a, npix, ksel)
+
+short	a[ARB]			# input array
+int	npix			# number of pixels
+int	ksel			# element to be selected
+
+int	lo, up, i, j, k, dummy
+short	temp, wtemp
+
+begin
+	lo = 1
+	up = npix
+	k  = max (lo, min (up, ksel))
+
+	# while (lo < up)
+	do dummy = 1, MAX_INT {
+	    if (! (lo < up))
+		break
+
+	    temp = a[k];  i = lo;  j = up
+
+	    repeat {
+		while (a[i] < temp)
+		    i = i + 1
+		while (temp < a[j])
+		    j = j - 1
+		if (i <= j) {
+		    wtemp = a[i];  a[i] = a[j];  a[j] = wtemp
+		    i = i + 1;  j = j - 1
+		}
+	    } until (i > j)
+
+	    if (j < k)
+		lo = i
+	    if (k < i)
+		up = j
+	}
+
+	return (a[k])
+end
diff --git a/sys/vops/lz/asokx.x b/sys/vops/lz/asokx.x
new file mode 100644
index 00000000..7528714a
--- /dev/null
+++ b/sys/vops/lz/asokx.x
@@ -0,0 +1,65 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include <mach.h>
+
+# ASOK -- Select the Kth smallest element from a vector.  The algorithm used
+# is selection by tail recursion (Gonnet 1984).  In each iteration a pivot key
+# is selected (somewhat arbitrarily) from the array.  The array is then split
+# into two subarrays, those with key values less than or equal to the pivot key
+# and those with values greater than the pivot.  The size of the two subarrays
+# determines which contains the median value, and the process is repeated
+# on that subarray, and so on until all of the elements of the subarray
+# are equal, e.g., there is only one element left in the subarray.  For a
+# randomly ordered array the expected running time is O(3.38N).  The selection
+# is carried out in place, leaving the array in a partially ordered state.
+#
+# N.B.: Behaviour is O(N) if the input array is sorted.
+# N.B.: The cases ksel=1 and ksel=npix, i.e., selection of the minimum and
+# maximum values, are more efficiently handled by ALIM which is O(2N).
+#
+# Jul99 - The above algorithm was found to be pathologically slow in cases
+# where many or all elements of the array are equal.  The version of the
+# algorithm below, from Wirth, appears to avoid this problem.
+
+complex procedure asokx (a, npix, ksel)
+
+complex	a[ARB]			# input array
+int	npix			# number of pixels
+int	ksel			# element to be selected
+
+int	lo, up, i, j, k, dummy
+complex	temp, wtemp
+real	abs_temp
+
+begin
+	lo = 1
+	up = npix
+	k  = max (lo, min (up, ksel))
+
+	# while (lo < up)
+	do dummy = 1, MAX_INT {
+	    if (! (lo < up))
+		break
+
+	    temp = a[k];  i = lo;  j = up
+	    abs_temp = abs (temp)
+
+	    repeat {
+		while (abs (a[i]) < abs_temp)
+		    i = i + 1
+		while (abs_temp < abs (a[j]))
+		    j = j - 1
+		if (i <= j) {
+		    wtemp = a[i];  a[i] = a[j];  a[j] = wtemp
+		    i = i + 1;  j = j - 1
+		}
+	    } until (i > j)
+
+	    if (j < k)
+		lo = i
+	    if (k < i)
+		up = j
+	}
+
+	return (a[k])
+end
diff --git a/sys/vops/lz/asqrd.x b/sys/vops/lz/asqrd.x
new file mode 100644
index 00000000..e6cf3f70
--- /dev/null
+++ b/sys/vops/lz/asqrd.x
@@ -0,0 +1,23 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASQR -- Compute the square root of a vector (generic).  If the square root
+# is undefined (x < 0) a user supplied function is called to compute the value.
+
+procedure asqrd (a, b, npix, errfcn)
+
+double	a[ARB], b[ARB]
+int	npix, i
+extern	errfcn()
+double	errfcn()
+errchk	errfcn
+
+begin
+	do i = 1, npix {
+		if (a[i] < 0)
+		    b[i] = errfcn (a[i])
+		else
+		{
+			b[i] = sqrt (a[i])
+		}
+	}
+end
diff --git a/sys/vops/lz/asqri.x b/sys/vops/lz/asqri.x
new file mode 100644
index 00000000..c68c64f4
--- /dev/null
+++ b/sys/vops/lz/asqri.x
@@ -0,0 +1,23 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASQR -- Compute the square root of a vector (generic).  If the square root
+# is undefined (x < 0) a user supplied function is called to compute the value.
+
+procedure asqri (a, b, npix, errfcn)
+
+int	a[ARB], b[ARB]
+int	npix, i
+extern	errfcn()
+int	errfcn()
+errchk	errfcn
+
+begin
+	do i = 1, npix {
+		if (a[i] < 0)
+		    b[i] = errfcn (a[i])
+		else
+		{
+			b[i] = sqrt (real (a[i]))
+		}
+	}
+end
diff --git a/sys/vops/lz/asqrl.x b/sys/vops/lz/asqrl.x
new file mode 100644
index 00000000..3b0d23f0
--- /dev/null
+++ b/sys/vops/lz/asqrl.x
@@ -0,0 +1,23 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASQR -- Compute the square root of a vector (generic).  If the square root
+# is undefined (x < 0) a user supplied function is called to compute the value.
+
+procedure asqrl (a, b, npix, errfcn)
+
+long	a[ARB], b[ARB]
+int	npix, i
+extern	errfcn()
+long	errfcn()
+errchk	errfcn
+
+begin
+	do i = 1, npix {
+		if (a[i] < 0)
+		    b[i] = errfcn (a[i])
+		else
+		{
+			b[i] = sqrt (double (a[i]))
+		}
+	}
+end
diff --git a/sys/vops/lz/asqrr.x b/sys/vops/lz/asqrr.x
new file mode 100644
index 00000000..a18b21d2
--- /dev/null
+++ b/sys/vops/lz/asqrr.x
@@ -0,0 +1,23 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASQR -- Compute the square root of a vector (generic).  If the square root
+# is undefined (x < 0) a user supplied function is called to compute the value.
+
+procedure asqrr (a, b, npix, errfcn)
+
+real	a[ARB], b[ARB]
+int	npix, i
+extern	errfcn()
+real	errfcn()
+errchk	errfcn
+
+begin
+	do i = 1, npix {
+		if (a[i] < 0)
+		    b[i] = errfcn (a[i])
+		else
+		{
+			b[i] = sqrt (a[i])
+		}
+	}
+end
diff --git a/sys/vops/lz/asqrs.x b/sys/vops/lz/asqrs.x
new file mode 100644
index 00000000..5a1d6532
--- /dev/null
+++ b/sys/vops/lz/asqrs.x
@@ -0,0 +1,23 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASQR -- Compute the square root of a vector (generic).  If the square root
+# is undefined (x < 0) a user supplied function is called to compute the value.
+
+procedure asqrs (a, b, npix, errfcn)
+
+short	a[ARB], b[ARB]
+int	npix, i
+extern	errfcn()
+short	errfcn()
+errchk	errfcn
+
+begin
+	do i = 1, npix {
+		if (a[i] < 0)
+		    b[i] = errfcn (a[i])
+		else
+		{
+			b[i] = sqrt (real (a[i]))
+		}
+	}
+end
diff --git a/sys/vops/lz/asqrx.x b/sys/vops/lz/asqrx.x
new file mode 100644
index 00000000..a529811c
--- /dev/null
+++ b/sys/vops/lz/asqrx.x
@@ -0,0 +1,20 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASQR -- Compute the square root of a vector (generic).  If the square root
+# is undefined (x < 0) a user supplied function is called to compute the value.
+
+procedure asqrx (a, b, npix, errfcn)
+
+complex	a[ARB], b[ARB]
+int	npix, i
+extern	errfcn()
+complex	errfcn()
+errchk	errfcn
+
+begin
+	do i = 1, npix {
+		{
+			b[i] = sqrt (a[i])
+		}
+	}
+end
diff --git a/sys/vops/lz/asrtc.x b/sys/vops/lz/asrtc.x
new file mode 100644
index 00000000..f4de2d71
--- /dev/null
+++ b/sys/vops/lz/asrtc.x
@@ -0,0 +1,69 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+define	LOGPTR	32			# log2(maxpts) (4e9)
+
+# ASRT -- Vector Quicksort.  The output vector may be the same as the
+# input vector.
+
+procedure asrtc (a, b, npix)
+
+char	a[ARB], b[ARB]		# input, output arrays
+int	npix			# number of pixels
+
+char	pivot, temp
+int	i, j, k, p, lv[LOGPTR], uv[LOGPTR]
+define	swap {temp=$1;$1=$2;$2=temp}
+
+begin
+	call amovc (a, b, npix)		# in place sort
+
+	lv[1] = 1
+	uv[1] = npix
+	p = 1
+
+	while (p > 0) {
+	    if (lv[p] >= uv[p])			# only one elem in this subset
+		p = p - 1			# pop stack
+	    else {
+		# Dummy do loop to trigger the Fortran optimizer.
+		do p = p, ARB {
+		    i = lv[p] - 1
+		    j = uv[p]
+
+		    # Select as the pivot the element at the center of the
+		    # array, to avoid quadratic behavior on an already sorted
+		    # array.
+
+		    k = (lv[p] + uv[p]) / 2
+		    swap (b[j], b[k])
+		    pivot = b[j]			# pivot line
+
+		    while (i < j) {
+			for (i=i+1;  b[i] < pivot;  i=i+1)
+			    ;
+			for (j=j-1;  j > i;  j=j-1)
+			    if (b[j] <= pivot)
+				break
+			if (i < j)		# out of order pair
+			    swap (b[i], b[j])	# interchange elements
+		    }
+
+		    j = uv[p]			# move pivot to position i
+		    swap (b[i], b[j])		# interchange elements
+
+		    if (i-lv[p] < uv[p] - i) {	# stack so shorter done first
+			lv[p+1] = lv[p]
+			uv[p+1] = i - 1
+			lv[p] = i + 1
+		    } else {
+			lv[p+1] = i + 1
+			uv[p+1] = uv[p]
+			uv[p] = i - 1
+		    }
+
+		    break
+		}
+		p = p + 1			# push onto stack
+	    }
+	}
+end
diff --git a/sys/vops/lz/asrtd.x b/sys/vops/lz/asrtd.x
new file mode 100644
index 00000000..64d52880
--- /dev/null
+++ b/sys/vops/lz/asrtd.x
@@ -0,0 +1,69 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+define	LOGPTR	32			# log2(maxpts) (4e9)
+
+# ASRT -- Vector Quicksort.  The output vector may be the same as the
+# input vector.
+
+procedure asrtd (a, b, npix)
+
+double	a[ARB], b[ARB]		# input, output arrays
+int	npix			# number of pixels
+
+double	pivot, temp
+int	i, j, k, p, lv[LOGPTR], uv[LOGPTR]
+define	swap {temp=$1;$1=$2;$2=temp}
+
+begin
+	call amovd (a, b, npix)		# in place sort
+
+	lv[1] = 1
+	uv[1] = npix
+	p = 1
+
+	while (p > 0) {
+	    if (lv[p] >= uv[p])			# only one elem in this subset
+		p = p - 1			# pop stack
+	    else {
+		# Dummy do loop to trigger the Fortran optimizer.
+		do p = p, ARB {
+		    i = lv[p] - 1
+		    j = uv[p]
+
+		    # Select as the pivot the element at the center of the
+		    # array, to avoid quadratic behavior on an already sorted
+		    # array.
+
+		    k = (lv[p] + uv[p]) / 2
+		    swap (b[j], b[k])
+		    pivot = b[j]			# pivot line
+
+		    while (i < j) {
+			for (i=i+1;  b[i] < pivot;  i=i+1)
+			    ;
+			for (j=j-1;  j > i;  j=j-1)
+			    if (b[j] <= pivot)
+				break
+			if (i < j)		# out of order pair
+			    swap (b[i], b[j])	# interchange elements
+		    }
+
+		    j = uv[p]			# move pivot to position i
+		    swap (b[i], b[j])		# interchange elements
+
+		    if (i-lv[p] < uv[p] - i) {	# stack so shorter done first
+			lv[p+1] = lv[p]
+			uv[p+1] = i - 1
+			lv[p] = i + 1
+		    } else {
+			lv[p+1] = i + 1
+			uv[p+1] = uv[p]
+			uv[p] = i - 1
+		    }
+
+		    break
+		}
+		p = p + 1			# push onto stack
+	    }
+	}
+end
diff --git a/sys/vops/lz/asrti.x b/sys/vops/lz/asrti.x
new file mode 100644
index 00000000..e956a8bd
--- /dev/null
+++ b/sys/vops/lz/asrti.x
@@ -0,0 +1,69 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+define	LOGPTR	32			# log2(maxpts) (4e9)
+
+# ASRT -- Vector Quicksort.  The output vector may be the same as the
+# input vector.
+
+procedure asrti (a, b, npix)
+
+int	a[ARB], b[ARB]		# input, output arrays
+int	npix			# number of pixels
+
+int	pivot, temp
+int	i, j, k, p, lv[LOGPTR], uv[LOGPTR]
+define	swap {temp=$1;$1=$2;$2=temp}
+
+begin
+	call amovi (a, b, npix)		# in place sort
+
+	lv[1] = 1
+	uv[1] = npix
+	p = 1
+
+	while (p > 0) {
+	    if (lv[p] >= uv[p])			# only one elem in this subset
+		p = p - 1			# pop stack
+	    else {
+		# Dummy do loop to trigger the Fortran optimizer.
+		do p = p, ARB {
+		    i = lv[p] - 1
+		    j = uv[p]
+
+		    # Select as the pivot the element at the center of the
+		    # array, to avoid quadratic behavior on an already sorted
+		    # array.
+
+		    k = (lv[p] + uv[p]) / 2
+		    swap (b[j], b[k])
+		    pivot = b[j]			# pivot line
+
+		    while (i < j) {
+			for (i=i+1;  b[i] < pivot;  i=i+1)
+			    ;
+			for (j=j-1;  j > i;  j=j-1)
+			    if (b[j] <= pivot)
+				break
+			if (i < j)		# out of order pair
+			    swap (b[i], b[j])	# interchange elements
+		    }
+
+		    j = uv[p]			# move pivot to position i
+		    swap (b[i], b[j])		# interchange elements
+
+		    if (i-lv[p] < uv[p] - i) {	# stack so shorter done first
+			lv[p+1] = lv[p]
+			uv[p+1] = i - 1
+			lv[p] = i + 1
+		    } else {
+			lv[p+1] = i + 1
+			uv[p+1] = uv[p]
+			uv[p] = i - 1
+		    }
+
+		    break
+		}
+		p = p + 1			# push onto stack
+	    }
+	}
+end
diff --git a/sys/vops/lz/asrtl.x b/sys/vops/lz/asrtl.x
new file mode 100644
index 00000000..ddc1c59b
--- /dev/null
+++ b/sys/vops/lz/asrtl.x
@@ -0,0 +1,69 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+define	LOGPTR	32			# log2(maxpts) (4e9)
+
+# ASRT -- Vector Quicksort.  The output vector may be the same as the
+# input vector.
+
+procedure asrtl (a, b, npix)
+
+long	a[ARB], b[ARB]		# input, output arrays
+int	npix			# number of pixels
+
+long	pivot, temp
+int	i, j, k, p, lv[LOGPTR], uv[LOGPTR]
+define	swap {temp=$1;$1=$2;$2=temp}
+
+begin
+	call amovl (a, b, npix)		# in place sort
+
+	lv[1] = 1
+	uv[1] = npix
+	p = 1
+
+	while (p > 0) {
+	    if (lv[p] >= uv[p])			# only one elem in this subset
+		p = p - 1			# pop stack
+	    else {
+		# Dummy do loop to trigger the Fortran optimizer.
+		do p = p, ARB {
+		    i = lv[p] - 1
+		    j = uv[p]
+
+		    # Select as the pivot the element at the center of the
+		    # array, to avoid quadratic behavior on an already sorted
+		    # array.
+
+		    k = (lv[p] + uv[p]) / 2
+		    swap (b[j], b[k])
+		    pivot = b[j]			# pivot line
+
+		    while (i < j) {
+			for (i=i+1;  b[i] < pivot;  i=i+1)
+			    ;
+			for (j=j-1;  j > i;  j=j-1)
+			    if (b[j] <= pivot)
+				break
+			if (i < j)		# out of order pair
+			    swap (b[i], b[j])	# interchange elements
+		    }
+
+		    j = uv[p]			# move pivot to position i
+		    swap (b[i], b[j])		# interchange elements
+
+		    if (i-lv[p] < uv[p] - i) {	# stack so shorter done first
+			lv[p+1] = lv[p]
+			uv[p+1] = i - 1
+			lv[p] = i + 1
+		    } else {
+			lv[p+1] = i + 1
+			uv[p+1] = uv[p]
+			uv[p] = i - 1
+		    }
+
+		    break
+		}
+		p = p + 1			# push onto stack
+	    }
+	}
+end
diff --git a/sys/vops/lz/asrtr.x b/sys/vops/lz/asrtr.x
new file mode 100644
index 00000000..a4be1ed2
--- /dev/null
+++ b/sys/vops/lz/asrtr.x
@@ -0,0 +1,69 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+define	LOGPTR	32			# log2(maxpts) (4e9)
+
+# ASRT -- Vector Quicksort.  The output vector may be the same as the
+# input vector.
+
+procedure asrtr (a, b, npix)
+
+real	a[ARB], b[ARB]		# input, output arrays
+int	npix			# number of pixels
+
+real	pivot, temp
+int	i, j, k, p, lv[LOGPTR], uv[LOGPTR]
+define	swap {temp=$1;$1=$2;$2=temp}
+
+begin
+	call amovr (a, b, npix)		# in place sort
+
+	lv[1] = 1
+	uv[1] = npix
+	p = 1
+
+	while (p > 0) {
+	    if (lv[p] >= uv[p])			# only one elem in this subset
+		p = p - 1			# pop stack
+	    else {
+		# Dummy do loop to trigger the Fortran optimizer.
+		do p = p, ARB {
+		    i = lv[p] - 1
+		    j = uv[p]
+
+		    # Select as the pivot the element at the center of the
+		    # array, to avoid quadratic behavior on an already sorted
+		    # array.
+
+		    k = (lv[p] + uv[p]) / 2
+		    swap (b[j], b[k])
+		    pivot = b[j]			# pivot line
+
+		    while (i < j) {
+			for (i=i+1;  b[i] < pivot;  i=i+1)
+			    ;
+			for (j=j-1;  j > i;  j=j-1)
+			    if (b[j] <= pivot)
+				break
+			if (i < j)		# out of order pair
+			    swap (b[i], b[j])	# interchange elements
+		    }
+
+		    j = uv[p]			# move pivot to position i
+		    swap (b[i], b[j])		# interchange elements
+
+		    if (i-lv[p] < uv[p] - i) {	# stack so shorter done first
+			lv[p+1] = lv[p]
+			uv[p+1] = i - 1
+			lv[p] = i + 1
+		    } else {
+			lv[p+1] = i + 1
+			uv[p+1] = uv[p]
+			uv[p] = i - 1
+		    }
+
+		    break
+		}
+		p = p + 1			# push onto stack
+	    }
+	}
+end
diff --git a/sys/vops/lz/asrts.x b/sys/vops/lz/asrts.x
new file mode 100644
index 00000000..b0bff6e6
--- /dev/null
+++ b/sys/vops/lz/asrts.x
@@ -0,0 +1,69 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+define	LOGPTR	32			# log2(maxpts) (4e9)
+
+# ASRT -- Vector Quicksort.  The output vector may be the same as the
+# input vector.
+
+procedure asrts (a, b, npix)
+
+short	a[ARB], b[ARB]		# input, output arrays
+int	npix			# number of pixels
+
+short	pivot, temp
+int	i, j, k, p, lv[LOGPTR], uv[LOGPTR]
+define	swap {temp=$1;$1=$2;$2=temp}
+
+begin
+	call amovs (a, b, npix)		# in place sort
+
+	lv[1] = 1
+	uv[1] = npix
+	p = 1
+
+	while (p > 0) {
+	    if (lv[p] >= uv[p])			# only one elem in this subset
+		p = p - 1			# pop stack
+	    else {
+		# Dummy do loop to trigger the Fortran optimizer.
+		do p = p, ARB {
+		    i = lv[p] - 1
+		    j = uv[p]
+
+		    # Select as the pivot the element at the center of the
+		    # array, to avoid quadratic behavior on an already sorted
+		    # array.
+
+		    k = (lv[p] + uv[p]) / 2
+		    swap (b[j], b[k])
+		    pivot = b[j]			# pivot line
+
+		    while (i < j) {
+			for (i=i+1;  b[i] < pivot;  i=i+1)
+			    ;
+			for (j=j-1;  j > i;  j=j-1)
+			    if (b[j] <= pivot)
+				break
+			if (i < j)		# out of order pair
+			    swap (b[i], b[j])	# interchange elements
+		    }
+
+		    j = uv[p]			# move pivot to position i
+		    swap (b[i], b[j])		# interchange elements
+
+		    if (i-lv[p] < uv[p] - i) {	# stack so shorter done first
+			lv[p+1] = lv[p]
+			uv[p+1] = i - 1
+			lv[p] = i + 1
+		    } else {
+			lv[p+1] = i + 1
+			uv[p+1] = uv[p]
+			uv[p] = i - 1
+		    }
+
+		    break
+		}
+		p = p + 1			# push onto stack
+	    }
+	}
+end
diff --git a/sys/vops/lz/asrtx.x b/sys/vops/lz/asrtx.x
new file mode 100644
index 00000000..7e0c421b
--- /dev/null
+++ b/sys/vops/lz/asrtx.x
@@ -0,0 +1,69 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+define	LOGPTR	32			# log2(maxpts) (4e9)
+
+# ASRT -- Vector Quicksort.  The output vector may be the same as the
+# input vector.
+
+procedure asrtx (a, b, npix)
+
+complex	a[ARB], b[ARB]		# input, output arrays
+int	npix			# number of pixels
+
+complex	pivot, temp
+int	i, j, k, p, lv[LOGPTR], uv[LOGPTR]
+define	swap {temp=$1;$1=$2;$2=temp}
+
+begin
+	call amovx (a, b, npix)		# in place sort
+
+	lv[1] = 1
+	uv[1] = npix
+	p = 1
+
+	while (p > 0) {
+	    if (lv[p] >= uv[p])			# only one elem in this subset
+		p = p - 1			# pop stack
+	    else {
+		# Dummy do loop to trigger the Fortran optimizer.
+		do p = p, ARB {
+		    i = lv[p] - 1
+		    j = uv[p]
+
+		    # Select as the pivot the element at the center of the
+		    # array, to avoid quadratic behavior on an already sorted
+		    # array.
+
+		    k = (lv[p] + uv[p]) / 2
+		    swap (b[j], b[k])
+		    pivot = b[j]			# pivot line
+
+		    while (i < j) {
+			for (i=i+1;  abs(b[i]) < abs(pivot);  i=i+1)
+			    ;
+			for (j=j-1;  j > i;  j=j-1)
+			    if (abs(b[j]) <= abs(pivot))
+				break
+			if (i < j)		# out of order pair
+			    swap (b[i], b[j])	# interchange elements
+		    }
+
+		    j = uv[p]			# move pivot to position i
+		    swap (b[i], b[j])		# interchange elements
+
+		    if (i-lv[p] < uv[p] - i) {	# stack so shorter done first
+			lv[p+1] = lv[p]
+			uv[p+1] = i - 1
+			lv[p] = i + 1
+		    } else {
+			lv[p+1] = i + 1
+			uv[p+1] = uv[p]
+			uv[p] = i - 1
+		    }
+
+		    break
+		}
+		p = p + 1			# push onto stack
+	    }
+	}
+end
diff --git a/sys/vops/lz/assqd.x b/sys/vops/lz/assqd.x
new file mode 100644
index 00000000..ec8d4190
--- /dev/null
+++ b/sys/vops/lz/assqd.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASSQ -- Vector sum of squares.
+
+double procedure assqd (a, npix)
+double	sum
+
+double	a[ARB]
+int	npix
+int	i
+
+begin
+	sum = 0.0D0
+	do i = 1, npix
+	    sum = sum + (a[i] ** 2)
+	
+	return (sum)
+end
diff --git a/sys/vops/lz/assqi.x b/sys/vops/lz/assqi.x
new file mode 100644
index 00000000..73091f16
--- /dev/null
+++ b/sys/vops/lz/assqi.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASSQ -- Vector sum of squares.
+
+real procedure assqi (a, npix)
+real	sum
+
+int	a[ARB]
+int	npix
+int	i
+
+begin
+	sum = 0
+	do i = 1, npix
+	    sum = sum + (a[i] ** 2)
+	
+	return (sum)
+end
diff --git a/sys/vops/lz/assql.x b/sys/vops/lz/assql.x
new file mode 100644
index 00000000..096f9a76
--- /dev/null
+++ b/sys/vops/lz/assql.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASSQ -- Vector sum of squares.
+
+double procedure assql (a, npix)
+double	sum
+
+long	a[ARB]
+int	npix
+int	i
+
+begin
+	sum = 0
+	do i = 1, npix
+	    sum = sum + (a[i] ** 2)
+	
+	return (sum)
+end
diff --git a/sys/vops/lz/assqr.x b/sys/vops/lz/assqr.x
new file mode 100644
index 00000000..ffb83e57
--- /dev/null
+++ b/sys/vops/lz/assqr.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASSQ -- Vector sum of squares.
+
+real procedure assqr (a, npix)
+real	sum
+
+real	a[ARB]
+int	npix
+int	i
+
+begin
+	sum = 0.0
+	do i = 1, npix
+	    sum = sum + (a[i] ** 2)
+	
+	return (sum)
+end
diff --git a/sys/vops/lz/assqs.x b/sys/vops/lz/assqs.x
new file mode 100644
index 00000000..094f9285
--- /dev/null
+++ b/sys/vops/lz/assqs.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASSQ -- Vector sum of squares.
+
+real procedure assqs (a, npix)
+real	sum
+
+short	a[ARB]
+int	npix
+int	i
+
+begin
+	sum = 0
+	do i = 1, npix
+	    sum = sum + (a[i] ** 2)
+	
+	return (sum)
+end
diff --git a/sys/vops/lz/assqx.x b/sys/vops/lz/assqx.x
new file mode 100644
index 00000000..adf4edb0
--- /dev/null
+++ b/sys/vops/lz/assqx.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASSQ -- Vector sum of squares.
+
+complex procedure assqx (a, npix)
+complex	sum
+
+complex	a[ARB]
+int	npix
+int	i
+
+begin
+	sum = (0.0,0.0)
+	do i = 1, npix
+	    sum = sum + (a[i] ** 2)
+	
+	return (sum)
+end
diff --git a/sys/vops/lz/asubd.x b/sys/vops/lz/asubd.x
new file mode 100644
index 00000000..faa1943a
--- /dev/null
+++ b/sys/vops/lz/asubd.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASUB -- Subtract two vectors (generic).
+
+procedure asubd (a, b, c, npix)
+
+double	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] - b[i]
+end
diff --git a/sys/vops/lz/asubi.x b/sys/vops/lz/asubi.x
new file mode 100644
index 00000000..6cecbfe9
--- /dev/null
+++ b/sys/vops/lz/asubi.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASUB -- Subtract two vectors (generic).
+
+procedure asubi (a, b, c, npix)
+
+int	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] - b[i]
+end
diff --git a/sys/vops/lz/asubkd.x b/sys/vops/lz/asubkd.x
new file mode 100644
index 00000000..9eed4999
--- /dev/null
+++ b/sys/vops/lz/asubkd.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASUBK -- Subtract a constant from a vector (generic).
+
+procedure asubkd (a, b, c, npix)
+
+double	a[ARB]
+double	b
+double	c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] - b
+end
diff --git a/sys/vops/lz/asubki.x b/sys/vops/lz/asubki.x
new file mode 100644
index 00000000..944e4af0
--- /dev/null
+++ b/sys/vops/lz/asubki.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASUBK -- Subtract a constant from a vector (generic).
+
+procedure asubki (a, b, c, npix)
+
+int	a[ARB]
+int	b
+int	c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] - b
+end
diff --git a/sys/vops/lz/asubkl.x b/sys/vops/lz/asubkl.x
new file mode 100644
index 00000000..7d6a7ce9
--- /dev/null
+++ b/sys/vops/lz/asubkl.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASUBK -- Subtract a constant from a vector (generic).
+
+procedure asubkl (a, b, c, npix)
+
+long	a[ARB]
+long	b
+long	c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] - b
+end
diff --git a/sys/vops/lz/asubkr.x b/sys/vops/lz/asubkr.x
new file mode 100644
index 00000000..c9a303ff
--- /dev/null
+++ b/sys/vops/lz/asubkr.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASUBK -- Subtract a constant from a vector (generic).
+
+procedure asubkr (a, b, c, npix)
+
+real	a[ARB]
+real	b
+real	c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] - b
+end
diff --git a/sys/vops/lz/asubks.x b/sys/vops/lz/asubks.x
new file mode 100644
index 00000000..e0eb9d66
--- /dev/null
+++ b/sys/vops/lz/asubks.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASUBK -- Subtract a constant from a vector (generic).
+
+procedure asubks (a, b, c, npix)
+
+short	a[ARB]
+short	b
+short	c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] - b
+end
diff --git a/sys/vops/lz/asubkx.x b/sys/vops/lz/asubkx.x
new file mode 100644
index 00000000..4c9f5280
--- /dev/null
+++ b/sys/vops/lz/asubkx.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASUBK -- Subtract a constant from a vector (generic).
+
+procedure asubkx (a, b, c, npix)
+
+complex	a[ARB]
+complex	b
+complex	c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] - b
+end
diff --git a/sys/vops/lz/asubl.x b/sys/vops/lz/asubl.x
new file mode 100644
index 00000000..851f988b
--- /dev/null
+++ b/sys/vops/lz/asubl.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASUB -- Subtract two vectors (generic).
+
+procedure asubl (a, b, c, npix)
+
+long	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] - b[i]
+end
diff --git a/sys/vops/lz/asubr.x b/sys/vops/lz/asubr.x
new file mode 100644
index 00000000..6ad54ba4
--- /dev/null
+++ b/sys/vops/lz/asubr.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASUB -- Subtract two vectors (generic).
+
+procedure asubr (a, b, c, npix)
+
+real	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] - b[i]
+end
diff --git a/sys/vops/lz/asubs.x b/sys/vops/lz/asubs.x
new file mode 100644
index 00000000..6a2a5ddb
--- /dev/null
+++ b/sys/vops/lz/asubs.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASUB -- Subtract two vectors (generic).
+
+procedure asubs (a, b, c, npix)
+
+short	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] - b[i]
+end
diff --git a/sys/vops/lz/asubx.x b/sys/vops/lz/asubx.x
new file mode 100644
index 00000000..7694aa7c
--- /dev/null
+++ b/sys/vops/lz/asubx.x
@@ -0,0 +1,13 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASUB -- Subtract two vectors (generic).
+
+procedure asubx (a, b, c, npix)
+
+complex	a[ARB], b[ARB], c[ARB]
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] - b[i]
+end
diff --git a/sys/vops/lz/asumd.x b/sys/vops/lz/asumd.x
new file mode 100644
index 00000000..24e4e7a9
--- /dev/null
+++ b/sys/vops/lz/asumd.x
@@ -0,0 +1,20 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASUM -- Vector sum.  Take care to prevent integer overflow by returning
+# a floating point sum.
+
+double procedure asumd (a, npix)
+
+double	a[ARB]
+int	npix
+int	i
+
+double	sum
+
+begin
+	sum = 0.0D0
+	do i = 1, npix
+	    sum = sum + a[i]
+	
+	return (sum)
+end
diff --git a/sys/vops/lz/asumi.x b/sys/vops/lz/asumi.x
new file mode 100644
index 00000000..314b100f
--- /dev/null
+++ b/sys/vops/lz/asumi.x
@@ -0,0 +1,20 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASUM -- Vector sum.  Take care to prevent integer overflow by returning
+# a floating point sum.
+
+real procedure asumi (a, npix)
+
+int	a[ARB]
+int	npix
+int	i
+
+real	sum
+
+begin
+	sum = 0
+	do i = 1, npix
+	    sum = sum + a[i]
+	
+	return (sum)
+end
diff --git a/sys/vops/lz/asuml.x b/sys/vops/lz/asuml.x
new file mode 100644
index 00000000..4a2f9ec1
--- /dev/null
+++ b/sys/vops/lz/asuml.x
@@ -0,0 +1,20 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASUM -- Vector sum.  Take care to prevent integer overflow by returning
+# a floating point sum.
+
+double procedure asuml (a, npix)
+
+long	a[ARB]
+int	npix
+int	i
+
+double	sum
+
+begin
+	sum = 0
+	do i = 1, npix
+	    sum = sum + a[i]
+	
+	return (sum)
+end
diff --git a/sys/vops/lz/asumr.x b/sys/vops/lz/asumr.x
new file mode 100644
index 00000000..962be9cc
--- /dev/null
+++ b/sys/vops/lz/asumr.x
@@ -0,0 +1,20 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASUM -- Vector sum.  Take care to prevent integer overflow by returning
+# a floating point sum.
+
+real procedure asumr (a, npix)
+
+real	a[ARB]
+int	npix
+int	i
+
+real	sum
+
+begin
+	sum = 0.0
+	do i = 1, npix
+	    sum = sum + a[i]
+	
+	return (sum)
+end
diff --git a/sys/vops/lz/asums.x b/sys/vops/lz/asums.x
new file mode 100644
index 00000000..663dab08
--- /dev/null
+++ b/sys/vops/lz/asums.x
@@ -0,0 +1,20 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASUM -- Vector sum.  Take care to prevent integer overflow by returning
+# a floating point sum.
+
+real procedure asums (a, npix)
+
+short	a[ARB]
+int	npix
+int	i
+
+real	sum
+
+begin
+	sum = 0
+	do i = 1, npix
+	    sum = sum + a[i]
+	
+	return (sum)
+end
diff --git a/sys/vops/lz/asumx.x b/sys/vops/lz/asumx.x
new file mode 100644
index 00000000..936cdaf3
--- /dev/null
+++ b/sys/vops/lz/asumx.x
@@ -0,0 +1,20 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ASUM -- Vector sum.  Take care to prevent integer overflow by returning
+# a floating point sum.
+
+complex procedure asumx (a, npix)
+
+complex	a[ARB]
+int	npix
+int	i
+
+complex	sum
+
+begin
+	sum = (0.0,0.0)
+	do i = 1, npix
+	    sum = sum + a[i]
+	
+	return (sum)
+end
diff --git a/sys/vops/lz/aupxd.x b/sys/vops/lz/aupxd.x
new file mode 100644
index 00000000..38e9fa53
--- /dev/null
+++ b/sys/vops/lz/aupxd.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AUPX -- Unpack the real and imaginary components of a complex vector into
+# two output vectors of some other type.
+
+procedure aupxd (a, b, c, npix)
+
+complex	a[ARB]			# input vector
+double	b[ARB], c[ARB]	# output vectors
+int	npix
+int	i
+
+begin
+	do i = 1, npix {
+		b[i] = real  (a[i])
+		c[i] = aimag (a[i])
+	}
+end
diff --git a/sys/vops/lz/aupxi.x b/sys/vops/lz/aupxi.x
new file mode 100644
index 00000000..59e76ced
--- /dev/null
+++ b/sys/vops/lz/aupxi.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AUPX -- Unpack the real and imaginary components of a complex vector into
+# two output vectors of some other type.
+
+procedure aupxi (a, b, c, npix)
+
+complex	a[ARB]			# input vector
+int	b[ARB], c[ARB]	# output vectors
+int	npix
+int	i
+
+begin
+	do i = 1, npix {
+		b[i] = real  (a[i])
+		c[i] = aimag (a[i])
+	}
+end
diff --git a/sys/vops/lz/aupxl.x b/sys/vops/lz/aupxl.x
new file mode 100644
index 00000000..96147678
--- /dev/null
+++ b/sys/vops/lz/aupxl.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AUPX -- Unpack the real and imaginary components of a complex vector into
+# two output vectors of some other type.
+
+procedure aupxl (a, b, c, npix)
+
+complex	a[ARB]			# input vector
+long	b[ARB], c[ARB]	# output vectors
+int	npix
+int	i
+
+begin
+	do i = 1, npix {
+		b[i] = real  (a[i])
+		c[i] = aimag (a[i])
+	}
+end
diff --git a/sys/vops/lz/aupxr.x b/sys/vops/lz/aupxr.x
new file mode 100644
index 00000000..135683fe
--- /dev/null
+++ b/sys/vops/lz/aupxr.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AUPX -- Unpack the real and imaginary components of a complex vector into
+# two output vectors of some other type.
+
+procedure aupxr (a, b, c, npix)
+
+complex	a[ARB]			# input vector
+real	b[ARB], c[ARB]	# output vectors
+int	npix
+int	i
+
+begin
+	do i = 1, npix {
+		b[i] = real  (a[i])
+		c[i] = aimag (a[i])
+	}
+end
diff --git a/sys/vops/lz/aupxs.x b/sys/vops/lz/aupxs.x
new file mode 100644
index 00000000..82996096
--- /dev/null
+++ b/sys/vops/lz/aupxs.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AUPX -- Unpack the real and imaginary components of a complex vector into
+# two output vectors of some other type.
+
+procedure aupxs (a, b, c, npix)
+
+complex	a[ARB]			# input vector
+short	b[ARB], c[ARB]	# output vectors
+int	npix
+int	i
+
+begin
+	do i = 1, npix {
+		b[i] = real  (a[i])
+		c[i] = aimag (a[i])
+	}
+end
diff --git a/sys/vops/lz/aupxx.x b/sys/vops/lz/aupxx.x
new file mode 100644
index 00000000..109bdc01
--- /dev/null
+++ b/sys/vops/lz/aupxx.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AUPX -- Unpack the real and imaginary components of a complex vector into
+# two output vectors of some other type.
+
+procedure aupxx (a, b, c, npix)
+
+complex	a[ARB]			# input vector
+complex	b[ARB], c[ARB]	# output vectors
+int	npix
+int	i
+
+begin
+	do i = 1, npix {
+		b[i] = complex (real(a[i]), 0.0)
+		c[i] = complex (0.0, aimag(a[i]))
+	}
+end
diff --git a/sys/vops/lz/aveqc.x b/sys/vops/lz/aveqc.x
new file mode 100644
index 00000000..e8d07db1
--- /dev/null
+++ b/sys/vops/lz/aveqc.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AVEQ -- Compare two vectors for equality.
+
+bool procedure aveqc (a, b, npix)
+
+char	a[ARB], b[ARB]		#I vectors to be compared
+int	npix			#I number of pixels to be compared
+
+int	i
+
+begin
+	do i = 1, npix
+	    if (a[i] != b[i])
+		return (false)
+
+	return (true)
+end
diff --git a/sys/vops/lz/aveqd.x b/sys/vops/lz/aveqd.x
new file mode 100644
index 00000000..d67daeb8
--- /dev/null
+++ b/sys/vops/lz/aveqd.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AVEQ -- Compare two vectors for equality.
+
+bool procedure aveqd (a, b, npix)
+
+double	a[ARB], b[ARB]		#I vectors to be compared
+int	npix			#I number of pixels to be compared
+
+int	i
+
+begin
+	do i = 1, npix
+	    if (a[i] != b[i])
+		return (false)
+
+	return (true)
+end
diff --git a/sys/vops/lz/aveqi.x b/sys/vops/lz/aveqi.x
new file mode 100644
index 00000000..913224b4
--- /dev/null
+++ b/sys/vops/lz/aveqi.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AVEQ -- Compare two vectors for equality.
+
+bool procedure aveqi (a, b, npix)
+
+int	a[ARB], b[ARB]		#I vectors to be compared
+int	npix			#I number of pixels to be compared
+
+int	i
+
+begin
+	do i = 1, npix
+	    if (a[i] != b[i])
+		return (false)
+
+	return (true)
+end
diff --git a/sys/vops/lz/aveql.x b/sys/vops/lz/aveql.x
new file mode 100644
index 00000000..ce05898e
--- /dev/null
+++ b/sys/vops/lz/aveql.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AVEQ -- Compare two vectors for equality.
+
+bool procedure aveql (a, b, npix)
+
+long	a[ARB], b[ARB]		#I vectors to be compared
+int	npix			#I number of pixels to be compared
+
+int	i
+
+begin
+	do i = 1, npix
+	    if (a[i] != b[i])
+		return (false)
+
+	return (true)
+end
diff --git a/sys/vops/lz/aveqr.x b/sys/vops/lz/aveqr.x
new file mode 100644
index 00000000..01faffe2
--- /dev/null
+++ b/sys/vops/lz/aveqr.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AVEQ -- Compare two vectors for equality.
+
+bool procedure aveqr (a, b, npix)
+
+real	a[ARB], b[ARB]		#I vectors to be compared
+int	npix			#I number of pixels to be compared
+
+int	i
+
+begin
+	do i = 1, npix
+	    if (a[i] != b[i])
+		return (false)
+
+	return (true)
+end
diff --git a/sys/vops/lz/aveqs.x b/sys/vops/lz/aveqs.x
new file mode 100644
index 00000000..92680633
--- /dev/null
+++ b/sys/vops/lz/aveqs.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AVEQ -- Compare two vectors for equality.
+
+bool procedure aveqs (a, b, npix)
+
+short	a[ARB], b[ARB]		#I vectors to be compared
+int	npix			#I number of pixels to be compared
+
+int	i
+
+begin
+	do i = 1, npix
+	    if (a[i] != b[i])
+		return (false)
+
+	return (true)
+end
diff --git a/sys/vops/lz/aveqx.x b/sys/vops/lz/aveqx.x
new file mode 100644
index 00000000..2d616b1a
--- /dev/null
+++ b/sys/vops/lz/aveqx.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AVEQ -- Compare two vectors for equality.
+
+bool procedure aveqx (a, b, npix)
+
+complex	a[ARB], b[ARB]		#I vectors to be compared
+int	npix			#I number of pixels to be compared
+
+int	i
+
+begin
+	do i = 1, npix
+	    if (a[i] != b[i])
+		return (false)
+
+	return (true)
+end
diff --git a/sys/vops/lz/awsud.x b/sys/vops/lz/awsud.x
new file mode 100644
index 00000000..f2e5e02e
--- /dev/null
+++ b/sys/vops/lz/awsud.x
@@ -0,0 +1,14 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AWSU -- Vector weighted sum.  C = A * k1 + B * k2
+
+procedure awsud (a, b, c, npix, k1, k2)
+
+double	a[ARB], b[ARB], c[ARB]
+double	k1, k2
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] * k1 + b[i] * k2
+end
diff --git a/sys/vops/lz/awsui.x b/sys/vops/lz/awsui.x
new file mode 100644
index 00000000..0e75feed
--- /dev/null
+++ b/sys/vops/lz/awsui.x
@@ -0,0 +1,14 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AWSU -- Vector weighted sum.  C = A * k1 + B * k2
+
+procedure awsui (a, b, c, npix, k1, k2)
+
+int	a[ARB], b[ARB], c[ARB]
+real	k1, k2
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] * k1 + b[i] * k2
+end
diff --git a/sys/vops/lz/awsul.x b/sys/vops/lz/awsul.x
new file mode 100644
index 00000000..1a8dd058
--- /dev/null
+++ b/sys/vops/lz/awsul.x
@@ -0,0 +1,14 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AWSU -- Vector weighted sum.  C = A * k1 + B * k2
+
+procedure awsul (a, b, c, npix, k1, k2)
+
+long	a[ARB], b[ARB], c[ARB]
+real	k1, k2
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] * k1 + b[i] * k2
+end
diff --git a/sys/vops/lz/awsur.x b/sys/vops/lz/awsur.x
new file mode 100644
index 00000000..4efd8909
--- /dev/null
+++ b/sys/vops/lz/awsur.x
@@ -0,0 +1,14 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AWSU -- Vector weighted sum.  C = A * k1 + B * k2
+
+procedure awsur (a, b, c, npix, k1, k2)
+
+real	a[ARB], b[ARB], c[ARB]
+real	k1, k2
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] * k1 + b[i] * k2
+end
diff --git a/sys/vops/lz/awsus.x b/sys/vops/lz/awsus.x
new file mode 100644
index 00000000..78ee5bbf
--- /dev/null
+++ b/sys/vops/lz/awsus.x
@@ -0,0 +1,14 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AWSU -- Vector weighted sum.  C = A * k1 + B * k2
+
+procedure awsus (a, b, c, npix, k1, k2)
+
+short	a[ARB], b[ARB], c[ARB]
+real	k1, k2
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] * k1 + b[i] * k2
+end
diff --git a/sys/vops/lz/awsux.x b/sys/vops/lz/awsux.x
new file mode 100644
index 00000000..7516bd8b
--- /dev/null
+++ b/sys/vops/lz/awsux.x
@@ -0,0 +1,14 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AWSU -- Vector weighted sum.  C = A * k1 + B * k2
+
+procedure awsux (a, b, c, npix, k1, k2)
+
+complex	a[ARB], b[ARB], c[ARB]
+complex	k1, k2
+int	npix, i
+
+begin
+	do i = 1, npix
+	    c[i] = a[i] * k1 + b[i] * k2
+end
diff --git a/sys/vops/lz/awvgd.x b/sys/vops/lz/awvgd.x
new file mode 100644
index 00000000..58b1d87b
--- /dev/null
+++ b/sys/vops/lz/awvgd.x
@@ -0,0 +1,62 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AWVG -- Compute the mean and standard deviation (sigma) of a sample.  Pixels
+# whose value lies outside the specified lower and upper limits are not used.
+# If the upper and lower limits have the same value (e.g., zero), no limit
+# checking is performed.  The number of pixels in the sample is returned as the
+# function value.
+
+int procedure awvgd (a, npix, mean, sigma, lcut, hcut)
+
+double	a[ARB]
+double	mean, sigma, lcut, hcut
+double	sum, sumsq, value, temp
+int	npix, i, ngpix
+
+begin
+	sum = 0.0
+	sumsq = 0.0
+	ngpix = 0
+
+	# Accumulate sum, sum of squares.  The test to disable limit checking
+	# requires numerical equality of two floating point numbers; this should
+	# be ok since they are used as flags not as numbers (they are not used
+	# in computations).
+
+	if (hcut == lcut) {
+	    do i = 1, npix {
+		    value = a[i]
+		sum = sum + value
+		sumsq = sumsq + value ** 2
+	    }
+	    ngpix = npix
+
+	} else {
+	    do i = 1, npix {
+		    value = a[i]
+		if (value >= lcut && value <= hcut) {
+		    ngpix = ngpix + 1
+		    sum = sum + value
+		    sumsq = sumsq + value ** 2
+		}
+	    }
+	}
+
+	switch (ngpix) {		# compute mean and sigma
+	case 0:
+	    mean = INDEFD
+	    sigma = INDEFD
+	case 1:
+	    mean = sum
+	    sigma = INDEFD
+	default:
+	    mean = sum / ngpix
+	    temp = (sumsq - (sum/ngpix) * sum) / (ngpix - 1)
+	    if (temp < 0)		# possible with roundoff error
+		sigma = 0.0
+	    else
+		sigma = sqrt (temp)
+	}
+
+	return (ngpix)
+end
diff --git a/sys/vops/lz/awvgi.x b/sys/vops/lz/awvgi.x
new file mode 100644
index 00000000..b1e78ebe
--- /dev/null
+++ b/sys/vops/lz/awvgi.x
@@ -0,0 +1,62 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AWVG -- Compute the mean and standard deviation (sigma) of a sample.  Pixels
+# whose value lies outside the specified lower and upper limits are not used.
+# If the upper and lower limits have the same value (e.g., zero), no limit
+# checking is performed.  The number of pixels in the sample is returned as the
+# function value.
+
+int procedure awvgi (a, npix, mean, sigma, lcut, hcut)
+
+int	a[ARB]
+real	mean, sigma, lcut, hcut
+double	sum, sumsq, value, temp
+int	npix, i, ngpix
+
+begin
+	sum = 0.0
+	sumsq = 0.0
+	ngpix = 0
+
+	# Accumulate sum, sum of squares.  The test to disable limit checking
+	# requires numerical equality of two floating point numbers; this should
+	# be ok since they are used as flags not as numbers (they are not used
+	# in computations).
+
+	if (hcut == lcut) {
+	    do i = 1, npix {
+		    value = a[i]
+		sum = sum + value
+		sumsq = sumsq + value ** 2
+	    }
+	    ngpix = npix
+
+	} else {
+	    do i = 1, npix {
+		    value = a[i]
+		if (value >= lcut && value <= hcut) {
+		    ngpix = ngpix + 1
+		    sum = sum + value
+		    sumsq = sumsq + value ** 2
+		}
+	    }
+	}
+
+	switch (ngpix) {		# compute mean and sigma
+	case 0:
+	    mean = INDEFR
+	    sigma = INDEFR
+	case 1:
+	    mean = sum
+	    sigma = INDEFR
+	default:
+	    mean = sum / ngpix
+	    temp = (sumsq - (sum/ngpix) * sum) / (ngpix - 1)
+	    if (temp < 0)		# possible with roundoff error
+		sigma = 0.0
+	    else
+		sigma = sqrt (temp)
+	}
+
+	return (ngpix)
+end
diff --git a/sys/vops/lz/awvgl.x b/sys/vops/lz/awvgl.x
new file mode 100644
index 00000000..d56d0a8a
--- /dev/null
+++ b/sys/vops/lz/awvgl.x
@@ -0,0 +1,62 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AWVG -- Compute the mean and standard deviation (sigma) of a sample.  Pixels
+# whose value lies outside the specified lower and upper limits are not used.
+# If the upper and lower limits have the same value (e.g., zero), no limit
+# checking is performed.  The number of pixels in the sample is returned as the
+# function value.
+
+int procedure awvgl (a, npix, mean, sigma, lcut, hcut)
+
+long	a[ARB]
+double	mean, sigma, lcut, hcut
+double	sum, sumsq, value, temp
+int	npix, i, ngpix
+
+begin
+	sum = 0.0
+	sumsq = 0.0
+	ngpix = 0
+
+	# Accumulate sum, sum of squares.  The test to disable limit checking
+	# requires numerical equality of two floating point numbers; this should
+	# be ok since they are used as flags not as numbers (they are not used
+	# in computations).
+
+	if (hcut == lcut) {
+	    do i = 1, npix {
+		    value = a[i]
+		sum = sum + value
+		sumsq = sumsq + value ** 2
+	    }
+	    ngpix = npix
+
+	} else {
+	    do i = 1, npix {
+		    value = a[i]
+		if (value >= lcut && value <= hcut) {
+		    ngpix = ngpix + 1
+		    sum = sum + value
+		    sumsq = sumsq + value ** 2
+		}
+	    }
+	}
+
+	switch (ngpix) {		# compute mean and sigma
+	case 0:
+	    mean = INDEFD
+	    sigma = INDEFD
+	case 1:
+	    mean = sum
+	    sigma = INDEFD
+	default:
+	    mean = sum / ngpix
+	    temp = (sumsq - (sum/ngpix) * sum) / (ngpix - 1)
+	    if (temp < 0)		# possible with roundoff error
+		sigma = 0.0
+	    else
+		sigma = sqrt (temp)
+	}
+
+	return (ngpix)
+end
diff --git a/sys/vops/lz/awvgr.x b/sys/vops/lz/awvgr.x
new file mode 100644
index 00000000..fab5efe7
--- /dev/null
+++ b/sys/vops/lz/awvgr.x
@@ -0,0 +1,62 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AWVG -- Compute the mean and standard deviation (sigma) of a sample.  Pixels
+# whose value lies outside the specified lower and upper limits are not used.
+# If the upper and lower limits have the same value (e.g., zero), no limit
+# checking is performed.  The number of pixels in the sample is returned as the
+# function value.
+
+int procedure awvgr (a, npix, mean, sigma, lcut, hcut)
+
+real	a[ARB]
+real	mean, sigma, lcut, hcut
+double	sum, sumsq, value, temp
+int	npix, i, ngpix
+
+begin
+	sum = 0.0
+	sumsq = 0.0
+	ngpix = 0
+
+	# Accumulate sum, sum of squares.  The test to disable limit checking
+	# requires numerical equality of two floating point numbers; this should
+	# be ok since they are used as flags not as numbers (they are not used
+	# in computations).
+
+	if (hcut == lcut) {
+	    do i = 1, npix {
+		    value = a[i]
+		sum = sum + value
+		sumsq = sumsq + value ** 2
+	    }
+	    ngpix = npix
+
+	} else {
+	    do i = 1, npix {
+		    value = a[i]
+		if (value >= lcut && value <= hcut) {
+		    ngpix = ngpix + 1
+		    sum = sum + value
+		    sumsq = sumsq + value ** 2
+		}
+	    }
+	}
+
+	switch (ngpix) {		# compute mean and sigma
+	case 0:
+	    mean = INDEFR
+	    sigma = INDEFR
+	case 1:
+	    mean = sum
+	    sigma = INDEFR
+	default:
+	    mean = sum / ngpix
+	    temp = (sumsq - (sum/ngpix) * sum) / (ngpix - 1)
+	    if (temp < 0)		# possible with roundoff error
+		sigma = 0.0
+	    else
+		sigma = sqrt (temp)
+	}
+
+	return (ngpix)
+end
diff --git a/sys/vops/lz/awvgs.x b/sys/vops/lz/awvgs.x
new file mode 100644
index 00000000..8237be56
--- /dev/null
+++ b/sys/vops/lz/awvgs.x
@@ -0,0 +1,62 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AWVG -- Compute the mean and standard deviation (sigma) of a sample.  Pixels
+# whose value lies outside the specified lower and upper limits are not used.
+# If the upper and lower limits have the same value (e.g., zero), no limit
+# checking is performed.  The number of pixels in the sample is returned as the
+# function value.
+
+int procedure awvgs (a, npix, mean, sigma, lcut, hcut)
+
+short	a[ARB]
+real	mean, sigma, lcut, hcut
+double	sum, sumsq, value, temp
+int	npix, i, ngpix
+
+begin
+	sum = 0.0
+	sumsq = 0.0
+	ngpix = 0
+
+	# Accumulate sum, sum of squares.  The test to disable limit checking
+	# requires numerical equality of two floating point numbers; this should
+	# be ok since they are used as flags not as numbers (they are not used
+	# in computations).
+
+	if (hcut == lcut) {
+	    do i = 1, npix {
+		    value = a[i]
+		sum = sum + value
+		sumsq = sumsq + value ** 2
+	    }
+	    ngpix = npix
+
+	} else {
+	    do i = 1, npix {
+		    value = a[i]
+		if (value >= lcut && value <= hcut) {
+		    ngpix = ngpix + 1
+		    sum = sum + value
+		    sumsq = sumsq + value ** 2
+		}
+	    }
+	}
+
+	switch (ngpix) {		# compute mean and sigma
+	case 0:
+	    mean = INDEFR
+	    sigma = INDEFR
+	case 1:
+	    mean = sum
+	    sigma = INDEFR
+	default:
+	    mean = sum / ngpix
+	    temp = (sumsq - (sum/ngpix) * sum) / (ngpix - 1)
+	    if (temp < 0)		# possible with roundoff error
+		sigma = 0.0
+	    else
+		sigma = sqrt (temp)
+	}
+
+	return (ngpix)
+end
diff --git a/sys/vops/lz/awvgx.x b/sys/vops/lz/awvgx.x
new file mode 100644
index 00000000..82fe4192
--- /dev/null
+++ b/sys/vops/lz/awvgx.x
@@ -0,0 +1,62 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AWVG -- Compute the mean and standard deviation (sigma) of a sample.  Pixels
+# whose value lies outside the specified lower and upper limits are not used.
+# If the upper and lower limits have the same value (e.g., zero), no limit
+# checking is performed.  The number of pixels in the sample is returned as the
+# function value.
+
+int procedure awvgx (a, npix, mean, sigma, lcut, hcut)
+
+complex	a[ARB]
+real	mean, sigma, lcut, hcut
+double	sum, sumsq, value, temp
+int	npix, i, ngpix
+
+begin
+	sum = 0.0
+	sumsq = 0.0
+	ngpix = 0
+
+	# Accumulate sum, sum of squares.  The test to disable limit checking
+	# requires numerical equality of two floating point numbers; this should
+	# be ok since they are used as flags not as numbers (they are not used
+	# in computations).
+
+	if (hcut == lcut) {
+	    do i = 1, npix {
+		    value = abs (a[i])
+		sum = sum + value
+		sumsq = sumsq + value ** 2
+	    }
+	    ngpix = npix
+
+	} else {
+	    do i = 1, npix {
+		    value = abs (a[i])
+		if (value >= lcut && value <= hcut) {
+		    ngpix = ngpix + 1
+		    sum = sum + value
+		    sumsq = sumsq + value ** 2
+		}
+	    }
+	}
+
+	switch (ngpix) {		# compute mean and sigma
+	case 0:
+	    mean = INDEFR
+	    sigma = INDEFR
+	case 1:
+	    mean = sum
+	    sigma = INDEFR
+	default:
+	    mean = sum / ngpix
+	    temp = (sumsq - (sum/ngpix) * sum) / (ngpix - 1)
+	    if (temp < 0)		# possible with roundoff error
+		sigma = 0.0
+	    else
+		sigma = sqrt (temp)
+	}
+
+	return (ngpix)
+end
diff --git a/sys/vops/lz/axori.x b/sys/vops/lz/axori.x
new file mode 100644
index 00000000..e6df0010
--- /dev/null
+++ b/sys/vops/lz/axori.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AXOR -- Compute the exclusive or of two vectors (generic).
+
+procedure axori (a, b, c, npix)
+
+int	a[ARB], b[ARB], c[ARB]
+int	npix, i
+int	xor()
+
+begin
+	do i = 1, npix {
+		c[i] = xor (a[i], b[i])
+	}
+end
diff --git a/sys/vops/lz/axorki.x b/sys/vops/lz/axorki.x
new file mode 100644
index 00000000..5e08a769
--- /dev/null
+++ b/sys/vops/lz/axorki.x
@@ -0,0 +1,17 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AXORK -- Compute the boolean or of a vector and a constant (generic).
+
+procedure axorki (a, b, c, npix)
+
+int	a[ARB]
+int	b
+int	c[ARB]
+int	npix, i
+int	xor()
+
+begin
+	do i = 1, npix {
+		c[i] = xor (a[i], b)
+	}
+end
diff --git a/sys/vops/lz/axorkl.x b/sys/vops/lz/axorkl.x
new file mode 100644
index 00000000..df4f074f
--- /dev/null
+++ b/sys/vops/lz/axorkl.x
@@ -0,0 +1,17 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AXORK -- Compute the boolean or of a vector and a constant (generic).
+
+procedure axorkl (a, b, c, npix)
+
+long	a[ARB]
+long	b
+long	c[ARB]
+int	npix, i
+long	xorl()
+
+begin
+	do i = 1, npix {
+		c[i] = xorl (a[i], b)
+	}
+end
diff --git a/sys/vops/lz/axorks.x b/sys/vops/lz/axorks.x
new file mode 100644
index 00000000..d85e283d
--- /dev/null
+++ b/sys/vops/lz/axorks.x
@@ -0,0 +1,17 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AXORK -- Compute the boolean or of a vector and a constant (generic).
+
+procedure axorks (a, b, c, npix)
+
+short	a[ARB]
+short	b
+short	c[ARB]
+int	npix, i
+short	xors()
+
+begin
+	do i = 1, npix {
+		c[i] = xors (a[i], b)
+	}
+end
diff --git a/sys/vops/lz/axorl.x b/sys/vops/lz/axorl.x
new file mode 100644
index 00000000..d4087fd3
--- /dev/null
+++ b/sys/vops/lz/axorl.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AXOR -- Compute the exclusive or of two vectors (generic).
+
+procedure axorl (a, b, c, npix)
+
+long	a[ARB], b[ARB], c[ARB]
+int	npix, i
+long	xorl()
+
+begin
+	do i = 1, npix {
+		c[i] = xorl (a[i], b[i])
+	}
+end
diff --git a/sys/vops/lz/axors.x b/sys/vops/lz/axors.x
new file mode 100644
index 00000000..ab3c073d
--- /dev/null
+++ b/sys/vops/lz/axors.x
@@ -0,0 +1,15 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# AXOR -- Compute the exclusive or of two vectors (generic).
+
+procedure axors (a, b, c, npix)
+
+short	a[ARB], b[ARB], c[ARB]
+int	npix, i
+short	xors()
+
+begin
+	do i = 1, npix {
+		c[i] = xors (a[i], b[i])
+	}
+end
diff --git a/sys/vops/lz/mkpkg b/sys/vops/lz/mkpkg
new file mode 100644
index 00000000..046aa2b7
--- /dev/null
+++ b/sys/vops/lz/mkpkg
@@ -0,0 +1,330 @@
+# Make the VOPS vector operators library, procedures a[l-z]*.*.
+
+$checkout libvops.a lib$
+$update   libvops.a
+$checkin  libvops.a lib$
+$exit
+
+libvops.a:
+	alans.x
+	alani.x
+	alanl.x
+	alanks.x
+	alanki.x
+	alankl.x
+	alimc.x	
+	alimd.x	
+	alimi.x	
+	aliml.x	
+	alimr.x	
+	alims.x	
+	alimx.x	
+	allnd.x	
+	allni.x	
+	allnl.x	
+	allnr.x	
+	allns.x	
+	allnx.x	
+	alogd.x	
+	alogi.x	
+	alogl.x	
+	alogr.x	
+	alogs.x	
+	alogx.x	
+	alors.x
+	alori.x
+	alorl.x
+	alorks.x
+	alorki.x
+	alorkl.x
+	alovc.x	
+	alovd.x	
+	alovi.x	
+	alovl.x	
+	alovr.x	
+	alovs.x	
+	alovx.x	
+	altad.x	
+	altai.x	
+	altal.x	
+	altar.x	
+	altas.x	
+	altax.x	
+	altmd.x	
+	altmi.x	
+	altml.x	
+	altmr.x	
+	altms.x	
+	altmx.x	
+	altrd.x	
+	altri.x	
+	altrl.x	
+	altrr.x	
+	altrs.x	
+	altrx.x	
+	aluid.x		<mach.h>
+	aluii.x		<mach.h>
+	aluil.x		<mach.h>
+	aluir.x		<mach.h>
+	aluis.x		<mach.h>
+	alutc.x	
+	alutd.x	
+	aluti.x	
+	alutl.x	
+	alutr.x	
+	aluts.x	
+	amagd.x	
+	amagi.x	
+	amagl.x	
+	amagr.x	
+	amags.x	
+	amagx.x	
+	amapd.x	
+	amapi.x	
+	amapl.x	
+	amapr.x	
+	amaps.x	
+	amaxc.x	
+	amaxd.x	
+	amaxi.x	
+	amaxkc.x	
+	amaxkd.x	
+	amaxki.x	
+	amaxkl.x	
+	amaxkr.x	
+	amaxks.x	
+	amaxkx.x	
+	amaxl.x	
+	amaxr.x	
+	amaxs.x	
+	amaxx.x	
+	amed3c.x	
+	amed3d.x	
+	amed3i.x	
+	amed3l.x	
+	amed3r.x	
+	amed3s.x	
+	amed4c.x	
+	amed4d.x	
+	amed4i.x	
+	amed4l.x	
+	amed4r.x	
+	amed4s.x	
+	amed5c.x	
+	amed5d.x	
+	amed5i.x	
+	amed5l.x	
+	amed5r.x	
+	amed5s.x	
+	amedc.x	
+	amedd.x	
+	amedi.x	
+	amedl.x	
+	amedr.x	
+	ameds.x	
+	amedx.x	
+	amgsd.x	
+	amgsi.x	
+	amgsl.x	
+	amgsr.x	
+	amgss.x	
+	amgsx.x	
+	aminc.x	
+	amind.x	
+	amini.x	
+	aminkc.x	
+	aminkd.x	
+	aminki.x	
+	aminkl.x	
+	aminkr.x	
+	aminks.x	
+	aminkx.x	
+	aminl.x	
+	aminr.x	
+	amins.x	
+	aminx.x	
+	amodd.x	
+	amodi.x	
+	amodkd.x	
+	amodki.x	
+	amodkl.x	
+	amodkr.x	
+	amodks.x	
+	amodl.x	
+	amodr.x	
+	amods.x	
+	amovc.x	
+	amovd.x	
+	amovi.x	
+	amovkc.x	
+	amovkd.x	
+	amovki.x	
+	amovkl.x	
+	amovkr.x	
+	amovks.x	
+	amovkx.x	
+	amovl.x	
+	amovr.x	
+	amovs.x	
+	amovx.x	
+	amuld.x	
+	amuli.x	
+	amulkd.x	
+	amulki.x	
+	amulkl.x	
+	amulkr.x	
+	amulks.x	
+	amulkx.x	
+	amull.x	
+	amulr.x	
+	amuls.x	
+	amulx.x	
+	anegd.x	
+	anegi.x	
+	anegl.x	
+	anegr.x	
+	anegs.x	
+	anegx.x	
+	anoti.x	
+	anotl.x	
+	anots.x	
+	apkxd.x	
+	apkxi.x	
+	apkxl.x	
+	apkxr.x	
+	apkxs.x	
+	apkxx.x	
+	apold.x	
+	apolr.x	
+	apowd.x	
+	apowi.x	
+	apowkd.x	
+	apowki.x	
+	apowkl.x	
+	apowkr.x	
+	apowks.x	
+	apowkx.x	
+	apowl.x	
+	apowr.x	
+	apows.x	
+	apowx.x	
+	aravd.x	<mach.h>
+	aravi.x	<mach.h>
+	aravl.x	<mach.h>
+	aravr.x	<mach.h>
+	aravs.x	<mach.h>
+	aravx.x	<mach.h>
+	arcpd.x	
+	arcpi.x	
+	arcpl.x	
+	arcpr.x	
+	arcps.x	
+	arcpx.x	
+	arczd.x	
+	arczi.x	
+	arczl.x	
+	arczr.x	
+	arczs.x	
+	arczx.x	
+	argtd.x	
+	argti.x	
+	argtl.x	
+	argtr.x	
+	argts.x	
+	argtx.x	
+	arltd.x	
+	arlti.x	
+	arltl.x	
+	arltr.x	
+	arlts.x	
+	arltx.x	
+	aselc.x	
+	aseld.x	
+	aseli.x	
+	asell.x	
+	aselr.x	
+	asels.x	
+	aselx.x	
+	aselkc.x	
+	aselkd.x	
+	aselki.x	
+	aselkl.x	
+	aselkr.x	
+	aselks.x	
+	aselkx.x	
+	asokc.x		<mach.h>
+	asokd.x		<mach.h>
+	asoki.x		<mach.h>
+	asokl.x		<mach.h>
+	asokr.x		<mach.h>
+	asoks.x		<mach.h>
+	asokx.x		<mach.h>
+	asqrd.x	
+	asqri.x	
+	asqrl.x	
+	asqrr.x	
+	asqrs.x	
+	asqrx.x	
+	asrtc.x	
+	asrtd.x	
+	asrti.x	
+	asrtl.x	
+	asrtr.x	
+	asrts.x	
+	asrtx.x	
+	assqd.x	
+	assqi.x	
+	assql.x	
+	assqr.x	
+	assqs.x	
+	assqx.x	
+	asubd.x	
+	asubi.x	
+	asubkd.x	
+	asubki.x	
+	asubkl.x	
+	asubkr.x	
+	asubks.x	
+	asubkx.x	
+	asubl.x	
+	asubr.x	
+	asubs.x	
+	asubx.x	
+	asumd.x	
+	asumi.x	
+	asuml.x	
+	asumr.x	
+	asums.x	
+	asumx.x	
+	aupxd.x	
+	aupxi.x	
+	aupxl.x	
+	aupxr.x	
+	aupxs.x	
+	aupxx.x	
+	aveqc.x
+	aveqd.x
+	aveqi.x
+	aveql.x
+	aveqr.x
+	aveqs.x
+	aveqx.x
+	awsud.x	
+	awsui.x	
+	awsul.x	
+	awsur.x	
+	awsus.x	
+	awsux.x	
+	awvgd.x	
+	awvgi.x	
+	awvgl.x	
+	awvgr.x	
+	awvgs.x	
+	awvgx.x	
+	axori.x	
+	axorki.x	
+	axorkl.x	
+	axorks.x	
+	axorl.x	
+	axors.x	
+	;