Initial commit

21 files changed, 1263 insertions, 0 deletions

diff --git a/unix/as.mc68020/README b/unix/as.mc68020/README
new file mode 100644
index 00000000..b931f6ca
--- /dev/null
+++ b/unix/as.mc68020/README
@@ -0,0 +1,4 @@
+AS -- Routines specially optimized (not necessary in assembler) for the local
+host machine.  This is done without compromising the portability of the system
+(see hlib$mkpkg.sf.*).
+
diff --git a/unix/as.mc68020/aclrb.c b/unix/as.mc68020/aclrb.c
new file mode 100644
index 00000000..0ad8e775
--- /dev/null
+++ b/unix/as.mc68020/aclrb.c
@@ -0,0 +1,16 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define import_spp
+#define import_knames
+#include <iraf.h>
+
+/* ACLRB -- Clear a block of memory.
+ * [Specially optimized for Sun/IRAF].
+ */
+ACLRB (a, n)
+XCHAR	*a;
+XINT	*n;
+{
+	bzero ((char *)a, *n);
+}
diff --git a/unix/as.mc68020/aclrc.c b/unix/as.mc68020/aclrc.c
new file mode 100644
index 00000000..5f65a082
--- /dev/null
+++ b/unix/as.mc68020/aclrc.c
@@ -0,0 +1,16 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define import_spp
+#define import_knames
+#include <iraf.h>
+
+/* ACLRC -- Clear a block of memory.
+ * [Specially optimized for Sun/IRAF].
+ */
+ACLRC (a, n)
+XCHAR	*a;
+XINT	*n;
+{
+	bzero ((char *)a, *n * sizeof(*a));
+}
diff --git a/unix/as.mc68020/aclrd.c b/unix/as.mc68020/aclrd.c
new file mode 100644
index 00000000..2336f5ee
--- /dev/null
+++ b/unix/as.mc68020/aclrd.c
@@ -0,0 +1,16 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define import_spp
+#define import_knames
+#include <iraf.h>
+
+/* ACLRD -- Clear a block of memory.
+ * [Specially optimized for Sun/IRAF].
+ */
+ACLRD (a, n)
+XDOUBLE	*a;
+XINT	*n;
+{
+	bzero ((char *)a, *n * sizeof(*a));
+}
diff --git a/unix/as.mc68020/aclri.c b/unix/as.mc68020/aclri.c
new file mode 100644
index 00000000..8dff5b08
--- /dev/null
+++ b/unix/as.mc68020/aclri.c
@@ -0,0 +1,16 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define import_spp
+#define import_knames
+#include <iraf.h>
+
+/* ACLRI -- Clear a block of memory.
+ * [Specially optimized for Sun/IRAF].
+ */
+ACLRI (a, n)
+XINT	*a;
+XINT	*n;
+{
+	bzero ((char *)a, *n * sizeof(*a));
+}
diff --git a/unix/as.mc68020/aclrl.c b/unix/as.mc68020/aclrl.c
new file mode 100644
index 00000000..0fc61dd4
--- /dev/null
+++ b/unix/as.mc68020/aclrl.c
@@ -0,0 +1,16 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define import_spp
+#define import_knames
+#include <iraf.h>
+
+/* ACLRL -- Clear a block of memory.
+ * [Specially optimized for Sun/IRAF].
+ */
+ACLRL (a, n)
+XLONG	*a;
+XINT	*n;
+{
+	bzero ((char *)a, *n * sizeof(*a));
+}
diff --git a/unix/as.mc68020/aclrr.c b/unix/as.mc68020/aclrr.c
new file mode 100644
index 00000000..78a56125
--- /dev/null
+++ b/unix/as.mc68020/aclrr.c
@@ -0,0 +1,16 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define import_spp
+#define import_knames
+#include <iraf.h>
+
+/* ACLRR -- Clear a block of memory.
+ * [Specially optimized for Sun/IRAF].
+ */
+ACLRR (a, n)
+XREAL	*a;
+XINT	*n;
+{
+	bzero ((char *)a, *n * sizeof(*a));
+}
diff --git a/unix/as.mc68020/aclrs.c b/unix/as.mc68020/aclrs.c
new file mode 100644
index 00000000..2dc2da7a
--- /dev/null
+++ b/unix/as.mc68020/aclrs.c
@@ -0,0 +1,16 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define import_spp
+#define import_knames
+#include <iraf.h>
+
+/* ACLRS -- Clear a block of memory.
+ * [Specially optimized for Sun/IRAF].
+ */
+ACLRS (a, n)
+XSHORT	*a;
+XINT	*n;
+{
+	bzero ((char *)a, *n * sizeof(*a));
+}
diff --git a/unix/as.mc68020/amovc.c b/unix/as.mc68020/amovc.c
new file mode 100644
index 00000000..90c59c15
--- /dev/null
+++ b/unix/as.mc68020/amovc.c
@@ -0,0 +1,17 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define import_spp
+#define import_knames
+#include <iraf.h>
+
+/* AMOVC -- Copy a block of memory.
+ * [Specially optimized for Sun/IRAF].
+ */
+AMOVC (a, b, n)
+XCHAR	*a, *b;
+XINT	*n;
+{
+	if (a != b)
+	    bcopy ((char *)a, (char *)b, *n * sizeof(*a));
+}
diff --git a/unix/as.mc68020/amovd.c b/unix/as.mc68020/amovd.c
new file mode 100644
index 00000000..6cca4dc6
--- /dev/null
+++ b/unix/as.mc68020/amovd.c
@@ -0,0 +1,17 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define import_spp
+#define import_knames
+#include <iraf.h>
+
+/* AMOVD -- Copy a block of memory.
+ * [Specially optimized for Sun/IRAF].
+ */
+AMOVD (a, b, n)
+XDOUBLE	*a, *b;
+XINT	*n;
+{
+	if (a != b)
+	    bcopy ((char *)a, (char *)b, *n * sizeof(*a));
+}
diff --git a/unix/as.mc68020/amovi.c b/unix/as.mc68020/amovi.c
new file mode 100644
index 00000000..5cd72417
--- /dev/null
+++ b/unix/as.mc68020/amovi.c
@@ -0,0 +1,17 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define import_spp
+#define import_knames
+#include <iraf.h>
+
+/* AMOVI -- Copy a block of memory.
+ * [Specially optimized for Sun/IRAF].
+ */
+AMOVI (a, b, n)
+XINT	*a, *b;
+XINT	*n;
+{
+	if (a != b)
+	    bcopy ((char *)a, (char *)b, *n * sizeof(*a));
+}
diff --git a/unix/as.mc68020/amovl.c b/unix/as.mc68020/amovl.c
new file mode 100644
index 00000000..2d8be93b
--- /dev/null
+++ b/unix/as.mc68020/amovl.c
@@ -0,0 +1,17 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define import_spp
+#define import_knames
+#include <iraf.h>
+
+/* AMOVL -- Copy a block of memory.
+ * [Specially optimized for Sun/IRAF].
+ */
+AMOVL (a, b, n)
+XLONG	*a, *b;
+XINT	*n;
+{
+	if (a != b)
+	    bcopy ((char *)a, (char *)b, *n * sizeof(*a));
+}
diff --git a/unix/as.mc68020/amovr.c b/unix/as.mc68020/amovr.c
new file mode 100644
index 00000000..62981c44
--- /dev/null
+++ b/unix/as.mc68020/amovr.c
@@ -0,0 +1,17 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define import_spp
+#define import_knames
+#include <iraf.h>
+
+/* AMOVR -- Copy a block of memory.
+ * [Specially optimized for Sun/IRAF].
+ */
+AMOVR (a, b, n)
+XREAL	*a, *b;
+XINT	*n;
+{
+	if (a != b)
+	    bcopy ((char *)a, (char *)b, *n * sizeof(*a));
+}
diff --git a/unix/as.mc68020/amovs.c b/unix/as.mc68020/amovs.c
new file mode 100644
index 00000000..855d2882
--- /dev/null
+++ b/unix/as.mc68020/amovs.c
@@ -0,0 +1,17 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define import_spp
+#define import_knames
+#include <iraf.h>
+
+/* AMOVS -- Copy a block of memory.
+ * [Specially optimized for Sun/IRAF].
+ */
+AMOVS (a, b, n)
+XSHORT	*a, *b;
+XINT	*n;
+{
+	if (a != b)
+	    bcopy ((char *)a, (char *)b, *n * sizeof(*a));
+}
diff --git a/unix/as.mc68020/bytmov.c b/unix/as.mc68020/bytmov.c
new file mode 100644
index 00000000..c02dd4c5
--- /dev/null
+++ b/unix/as.mc68020/bytmov.c
@@ -0,0 +1,23 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define	import_spp
+#define import_knames
+#include <iraf.h>
+
+/* BYTMOV -- Byte move from array "a" to array "b".  The move must be
+ * nondestructive, allowing a byte array to be shifted left or right a
+ * few bytes, hence comparison of the addresses of the arrays is necessary
+ * to determine if they overlap.
+ * [Specially optimized version for Sun/IRAF].
+ */
+BYTMOV (a, aoff, b, boff, nbytes)
+XCHAR	*a;			/* input byte array			*/
+XINT	*aoff;			/* first byte in A to be moved		*/
+XCHAR	*b;			/* output byte array			*/
+XINT	*boff;			/* first byte in B to be written	*/
+XINT	*nbytes;		/* number of bytes to move		*/
+{
+	if (a + *aoff != b + *boff)
+	    bcopy ((char *)a + (*aoff-1), (char *)b + (*boff-1), *nbytes);
+}
diff --git a/unix/as.mc68020/ieee.gx b/unix/as.mc68020/ieee.gx
new file mode 100644
index 00000000..fb3e34a4
--- /dev/null
+++ b/unix/as.mc68020/ieee.gx
@@ -0,0 +1,318 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<mach.h>
+
+.help IEEE
+.nf ------------------------------------------------------------------------
+Low level primitives for IEEE to native floating point datatype conversions.
+See also the MII package, which provides a higher level interface, and the
+IEEE related definitions in <mach.h>.
+
+	         ieepak[rd] (datum)			# scalar conversions
+	         ieeupk[rd] (datum)
+		ieevpak[rd] (native, ieee, nelem)	# vector conversions
+		ieevupk[rd] (ieee, native, nelem)
+	     iee[sg]nan[rd] (NaN)			# NaN handling
+		 ieemap[rd] (mapin, mapout)
+		ieestat[rd] (nin, nout)
+	       ieezstat[rd] ()
+
+The first two routines handle scalar conversions, the second two routines
+vector conversions.  The input and output vectors may be the same.
+Unfortunately, for portability reasons, functions cannot be used, so the
+scalar operators do an in-place conversion instead, and are a no-op on an
+unswapped IEEE system.  The routines iee[sg]nan[rd] set/get the native
+floating value used to replace NaNs or overflows occuring when converting
+IEEE to the native floating format (any floating value will do, e.g., zero or
+INDEF).  If NaN mapping is enabled, the ieestat[rd] routines may be used to
+determine the number of input or output NaN conversions occuring since the
+last call to ieezstat[rd].
+
+The NaN mapping enable switch and statistics counters are UNDEFINED at
+process startup; programs which use the IEEE conversion package should call
+ieemap[rd] to enable or disable NaN mapping, and ieezstat[rd] to initialize
+the statistics counters.
+
+The routines in this file are the "portable" versions.  The "portable"
+solution it to merely copy the array, swapping the bytes if necessary - this
+works on any host that uses the IEEE floating format.  NaN mapping is
+implemented in the portable code, but will work properly only for input
+conversions; for output, the IEEE NaN value is undefined in the portable
+version of the code (it is trivial to supply this value in an as$ieee.gx
+version of the code).
+If the local host does
+not use IEEE floating, or if a significant efficiency gain can be realized
+by programming in assembler or C, a host specific version of this file should
+be written, placed in AS, and referenced in the MKPKG special file list.
+.endhelp -------------------------------------------------------------------
+
+
+# Give the generic preprocessor some help.
+$if (datatype == r)
+define	IEEE_SWAP	IEEE_SWAP4
+define	BSWAP		bswap4
+define	NSWAP		4
+define	IOFF		1
+$else
+define	IEEE_SWAP	IEEE_SWAP8
+define	BSWAP		bswap8
+define	NSWAP		8
+define	IOFF		1	# MACHDEP (normally 1, 2 on e.g. Intel)
+$endif
+
+
+# IEEVPAK -- Convert an array in the native floating point format into an
+# array in IEEE floating format.  The input and output arrays can be the same.
+
+procedure ieevpak$t (native, ieee, nelem)
+
+PIXEL	native[ARB]		#I input native floating format array
+PIXEL	ieee[ARB]		#O output IEEE floating format array
+int	nelem			#I number of floating point numbers
+
+int	i
+PIXEL	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenan$t/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	if (mapout == NO) {
+	    if (IEEE_SWAP == YES)
+		call BSWAP (native, 1, ieee, 1, nelem * NSWAP)
+	    else
+		call amov$t (native, ieee, nelem)
+	} else {
+	    do i = 1, nelem
+		if (native[i] == native_NaN) {
+		    ieee(i) = ieee_NaN
+		    nout = nout + 1
+		} else
+		    ieee[i] = native[i]
+
+	    # Byteswap if necessary.
+	    if (IEEE_SWAP == YES)
+		call BSWAP (ieee, 1, ieee, 1, nelem * NSWAP)
+	}
+end
+
+
+# IEEVUPK -- Convert an array in IEEE floating format into the native
+# floating point format.  The input and output arrays can be the same.
+
+procedure ieevupk$t (ieee, native, nelem)
+
+PIXEL	ieee[ARB]		#I input IEEE floating format array
+PIXEL	native[ARB]		#O output native floating format array
+int	nelem			#I number of floating point numbers
+
+int	i
+$if (datatype == r)
+real	fval
+int	ival[1]
+%	equivalence (fval, ival)
+$else
+double	fval
+int	ival[2]
+%	equivalence (fval, ival)
+$endif
+
+PIXEL	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenan$t/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	if (IEEE_SWAP == YES) {
+	    call BSWAP (ieee, 1, native, 1, nelem * NSWAP)
+	    if (mapin != NO)
+		do i = 1, nelem {
+		    fval = native[i]
+	            if (and (ival[IOFF], NaNmask) == NaNmask) {
+			native[i] = native_NaN
+			nin = nin + 1
+		    }
+		}
+	} else {
+	    if (mapin == NO)
+		call amov$t (ieee, native, nelem)
+	    else {
+		do i = 1, nelem {
+		    fval = ieee[i]
+	            if (and (ival[IOFF], NaNmask) == NaNmask) {
+			native[i] = native_NaN
+			nin = nin + 1
+		    } else
+			native[i] = ieee[i]
+		}
+	    }
+	}
+end
+
+
+# IEEPAK -- Convert a native floating point number into IEEE format.
+
+procedure ieepak$t (x)
+
+PIXEL	x			#U datum to be converted
+
+PIXEL	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenan$t/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	if (mapout != NO)
+	    if (x == native_NaN) {
+		x = ieee_NaN
+		nout = nout + 1
+	    }
+	if (IEEE_SWAP == YES)
+	    call BSWAP (x, 1, x, 1, NSWAP)
+end
+
+
+# IEEUPK -- Convert an IEEE format number into native floating point.
+
+procedure ieeupk$t (x)
+
+PIXEL	x			#U datum to be converted
+
+$if (datatype == r)
+real	fval
+int	ival[1]
+%	equivalence (fval, ival)
+$else
+double	fval
+int	ival[2]
+%	equivalence (fval, ival)
+$endif
+
+PIXEL	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenan$t/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	if (IEEE_SWAP == YES)
+	    call BSWAP (x, 1, x, 1, NSWAP)
+	if (mapin != NO) {
+	    fval = x
+	    if (and (ival[IOFF], NaNmask) == NaNmask) {
+	        x = native_NaN
+		nin = nin + 1
+	    }
+	}
+end
+
+
+# IEESNAN -- Set the native floating point value used to replace NaNs and
+# overflows when converting IEEE to native.  This must be a legal (finite)
+# native floating point value.  Setting the reserved native pseudo-NaN value
+# has the side effect of enabling NaN mapping and zeroing the statistics
+# counters.
+
+procedure ieesnan$t (x)
+
+PIXEL	x			#I native value which will replace NaN
+
+PIXEL	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenan$t/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	native_NaN = x
+	call ieemap$t (YES, YES)
+	nin = 0
+	nout = 0
+end
+
+
+# IEEGNAN -- Get the NaN value.
+
+procedure ieegnan$t (x)
+
+PIXEL	x			#O native value which will replace NaN
+
+PIXEL	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenan$t/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	x = native_NaN
+end
+
+
+# IEESTAT -- Return statistics on the number of NaNs encountered in input
+# conversions (unpack) and output conversions (pack).
+
+procedure ieestat$t (o_nin, o_nout)
+
+int	o_nin				#O number of NaN seen on input
+int	o_nout				#O number of NaN values output
+
+PIXEL	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenan$t/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	o_nin = nin
+	o_nout = nout
+end
+
+
+# IEEZSTAT -- Zero the statistics counters.
+
+procedure ieezstat$t ()
+
+PIXEL	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenan$t/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	nin = 0
+	nout = 0
+end
+
+
+# MACHINE DEPENDENT PART.
+# ---------------------------
+
+# IEEMAP -- Enable or disable NaN mapping.
+#
+# sEEE EEEE Emmm mmmm mmmm mmmm mmmm mmmm
+#  3           2            1           0
+# 1098 7654 3210 9876 5432 1098 7654 3210
+#    7    f    8    0    0    0    0    0
+
+procedure ieemap$t (inval, outval)
+
+int	inval				#I enable NaN mapping for input?
+int	outval				#I enable NaN mapping for output?
+
+# MACHDEP.
+$if (datatype == r)
+%	real r_quiet_nan
+$else
+%	double precision d_quiet_nan
+$endif
+
+PIXEL	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenan$t/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	mapin = inval
+	mapout = outval
+
+	# MACHDEP.
+	if (mapout == YES)
+	$if (datatype == r)
+%	    ieeenn = r_quiet_NaN()
+	$else
+%	    ieeenn = d_quiet_NaN()
+	$endif
+
+	if (mapin == YES)
+	$if (datatype == r)
+	    NaNmask = 7F800000X
+	$else
+	    NaNmask = 7FF00000X
+	$endif
+end
diff --git a/unix/as.mc68020/ieeed.x b/unix/as.mc68020/ieeed.x
new file mode 100644
index 00000000..081b4760
--- /dev/null
+++ b/unix/as.mc68020/ieeed.x
@@ -0,0 +1,287 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<mach.h>
+
+.help IEEE
+.nf ------------------------------------------------------------------------
+Low level primitives for IEEE to native floating point datatype conversions.
+See also the MII package, which provides a higher level interface, and the
+IEEE related definitions in <mach.h>.
+
+	         ieepak[rd] (datum)			# scalar conversions
+	         ieeupk[rd] (datum)
+		ieevpak[rd] (native, ieee, nelem)	# vector conversions
+		ieevupk[rd] (ieee, native, nelem)
+	     iee[sg]nan[rd] (NaN)			# NaN handling
+		 ieemap[rd] (mapin, mapout)
+		ieestat[rd] (nin, nout)
+	       ieezstat[rd] ()
+
+The first two routines handle scalar conversions, the second two routines
+vector conversions.  The input and output vectors may be the same.
+Unfortunately, for portability reasons, functions cannot be used, so the
+scalar operators do an in-place conversion instead, and are a no-op on an
+unswapped IEEE system.  The routines iee[sg]nan[rd] set/get the native
+floating value used to replace NaNs or overflows occuring when converting
+IEEE to the native floating format (any floating value will do, e.g., zero or
+INDEFD).  If NaN mapping is enabled, the ieestat[rd] routines may be used to
+determine the number of input or output NaN conversions occuring since the
+last call to ieezstat[rd].
+
+The NaN mapping enable switch and statistics counters are UNDEFINED at
+process startup; programs which use the IEEE conversion package should call
+ieemap[rd] to enable or disable NaN mapping, and ieezstat[rd] to initialize
+the statistics counters.
+
+The routines in this file are the "portable" versions.  The "portable"
+solution it to merely copy the array, swapping the bytes if necessary - this
+works on any host that uses the IEEE floating format.  NaN mapping is
+implemented in the portable code, but will work properly only for input
+conversions; for output, the IEEE NaN value is undefined in the portable
+version of the code (it is trivial to supply this value in an as$ieee.gx
+version of the code).
+If the local host does
+not use IEEE floating, or if a significant efficiency gain can be realized
+by programming in assembler or C, a host specific version of this file should
+be written, placed in AS, and referenced in the MKPKG special file list.
+.endhelp -------------------------------------------------------------------
+
+
+# Give the generic preprocessor some help.
+define	IEEE_SWAP	IEEE_SWAP8
+define	BSWAP		bswap8
+define	NSWAP		8
+define	IOFF		1	# MACHDEP (normally 1, 2 on e.g. Intel)
+
+
+# IEEVPAK -- Convert an array in the native floating point format into an
+# array in IEEE floating format.  The input and output arrays can be the same.
+
+procedure ieevpakd (native, ieee, nelem)
+
+double	native[ARB]		#I input native floating format array
+double	ieee[ARB]		#O output IEEE floating format array
+int	nelem			#I number of floating point numbers
+
+int	i
+double	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenand/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	if (mapout == NO) {
+	    if (IEEE_SWAP == YES)
+		call BSWAP (native, 1, ieee, 1, nelem * NSWAP)
+	    else
+		call amovd (native, ieee, nelem)
+	} else {
+	    do i = 1, nelem
+		if (native[i] == native_NaN) {
+		    ieee(i) = ieee_NaN
+		    nout = nout + 1
+		} else
+		    ieee[i] = native[i]
+
+	    # Byteswap if necessary.
+	    if (IEEE_SWAP == YES)
+		call BSWAP (ieee, 1, ieee, 1, nelem * NSWAP)
+	}
+end
+
+
+# IEEVUPK -- Convert an array in IEEE floating format into the native
+# floating point format.  The input and output arrays can be the same.
+
+procedure ieevupkd (ieee, native, nelem)
+
+double	ieee[ARB]		#I input IEEE floating format array
+double	native[ARB]		#O output native floating format array
+int	nelem			#I number of floating point numbers
+
+int	i
+double	fval
+int	ival[2]
+%	equivalence (fval, ival)
+
+double	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenand/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	if (IEEE_SWAP == YES) {
+	    call BSWAP (ieee, 1, native, 1, nelem * NSWAP)
+	    if (mapin != NO)
+		do i = 1, nelem {
+		    fval = native[i]
+	            if (and (ival[IOFF], NaNmask) == NaNmask) {
+			native[i] = native_NaN
+			nin = nin + 1
+		    }
+		}
+	} else {
+	    if (mapin == NO)
+		call amovd (ieee, native, nelem)
+	    else {
+		do i = 1, nelem {
+		    fval = ieee[i]
+	            if (and (ival[IOFF], NaNmask) == NaNmask) {
+			native[i] = native_NaN
+			nin = nin + 1
+		    } else
+			native[i] = ieee[i]
+		}
+	    }
+	}
+end
+
+
+# IEEPAK -- Convert a native floating point number into IEEE format.
+
+procedure ieepakd (x)
+
+double	x			#U datum to be converted
+
+double	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenand/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	if (mapout != NO)
+	    if (x == native_NaN) {
+		x = ieee_NaN
+		nout = nout + 1
+	    }
+	if (IEEE_SWAP == YES)
+	    call BSWAP (x, 1, x, 1, NSWAP)
+end
+
+
+# IEEUPK -- Convert an IEEE format number into native floating point.
+
+procedure ieeupkd (x)
+
+double	x			#U datum to be converted
+
+double	fval
+int	ival[2]
+%	equivalence (fval, ival)
+
+double	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenand/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	if (IEEE_SWAP == YES)
+	    call BSWAP (x, 1, x, 1, NSWAP)
+	if (mapin != NO) {
+	    fval = x
+	    if (and (ival[IOFF], NaNmask) == NaNmask) {
+	        x = native_NaN
+		nin = nin + 1
+	    }
+	}
+end
+
+
+# IEESNAN -- Set the native floating point value used to replace NaNs and
+# overflows when converting IEEE to native.  This must be a legal (finite)
+# native floating point value.  Setting the reserved native pseudo-NaN value
+# has the side effect of enabling NaN mapping and zeroing the statistics
+# counters.
+
+procedure ieesnand (x)
+
+double	x			#I native value which will replace NaN
+
+double	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenand/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	native_NaN = x
+	call ieemapd (YES, YES)
+	nin = 0
+	nout = 0
+end
+
+
+# IEEGNAN -- Get the NaN value.
+
+procedure ieegnand (x)
+
+double	x			#O native value which will replace NaN
+
+double	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenand/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	x = native_NaN
+end
+
+
+# IEESTAT -- Return statistics on the number of NaNs encountered in input
+# conversions (unpack) and output conversions (pack).
+
+procedure ieestatd (o_nin, o_nout)
+
+int	o_nin				#O number of NaN seen on input
+int	o_nout				#O number of NaN values output
+
+double	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenand/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	o_nin = nin
+	o_nout = nout
+end
+
+
+# IEEZSTAT -- Zero the statistics counters.
+
+procedure ieezstatd ()
+
+double	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenand/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	nin = 0
+	nout = 0
+end
+
+
+# MACHINE DEPENDENT PART.
+# ---------------------------
+
+# IEEMAP -- Enable or disable NaN mapping.
+#
+# sEEE EEEE Emmm mmmm mmmm mmmm mmmm mmmm
+#  3           2            1           0
+# 1098 7654 3210 9876 5432 1098 7654 3210
+#    7    f    8    0    0    0    0    0
+
+procedure ieemapd (inval, outval)
+
+int	inval				#I enable NaN mapping for input?
+int	outval				#I enable NaN mapping for output?
+
+# MACHDEP.
+%	double precision d_quiet_nan
+
+double	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenand/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	mapin = inval
+	mapout = outval
+
+	# MACHDEP.
+	if (mapout == YES)
+%	    ieeenn = d_quiet_NaN()
+
+	if (mapin == YES)
+	    NaNmask = 7FF00000X
+end
diff --git a/unix/as.mc68020/ieeer.x b/unix/as.mc68020/ieeer.x
new file mode 100644
index 00000000..ab4fee53
--- /dev/null
+++ b/unix/as.mc68020/ieeer.x
@@ -0,0 +1,287 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<mach.h>
+
+.help IEEE
+.nf ------------------------------------------------------------------------
+Low level primitives for IEEE to native floating point datatype conversions.
+See also the MII package, which provides a higher level interface, and the
+IEEE related definitions in <mach.h>.
+
+	         ieepak[rd] (datum)			# scalar conversions
+	         ieeupk[rd] (datum)
+		ieevpak[rd] (native, ieee, nelem)	# vector conversions
+		ieevupk[rd] (ieee, native, nelem)
+	     iee[sg]nan[rd] (NaN)			# NaN handling
+		 ieemap[rd] (mapin, mapout)
+		ieestat[rd] (nin, nout)
+	       ieezstat[rd] ()
+
+The first two routines handle scalar conversions, the second two routines
+vector conversions.  The input and output vectors may be the same.
+Unfortunately, for portability reasons, functions cannot be used, so the
+scalar operators do an in-place conversion instead, and are a no-op on an
+unswapped IEEE system.  The routines iee[sg]nan[rd] set/get the native
+floating value used to replace NaNs or overflows occuring when converting
+IEEE to the native floating format (any floating value will do, e.g., zero or
+INDEFR).  If NaN mapping is enabled, the ieestat[rd] routines may be used to
+determine the number of input or output NaN conversions occuring since the
+last call to ieezstat[rd].
+
+The NaN mapping enable switch and statistics counters are UNDEFINED at
+process startup; programs which use the IEEE conversion package should call
+ieemap[rd] to enable or disable NaN mapping, and ieezstat[rd] to initialize
+the statistics counters.
+
+The routines in this file are the "portable" versions.  The "portable"
+solution it to merely copy the array, swapping the bytes if necessary - this
+works on any host that uses the IEEE floating format.  NaN mapping is
+implemented in the portable code, but will work properly only for input
+conversions; for output, the IEEE NaN value is undefined in the portable
+version of the code (it is trivial to supply this value in an as$ieee.gx
+version of the code).
+If the local host does
+not use IEEE floating, or if a significant efficiency gain can be realized
+by programming in assembler or C, a host specific version of this file should
+be written, placed in AS, and referenced in the MKPKG special file list.
+.endhelp -------------------------------------------------------------------
+
+
+# Give the generic preprocessor some help.
+define	IEEE_SWAP	IEEE_SWAP4
+define	BSWAP		bswap4
+define	NSWAP		4
+define	IOFF		1
+
+
+# IEEVPAK -- Convert an array in the native floating point format into an
+# array in IEEE floating format.  The input and output arrays can be the same.
+
+procedure ieevpakr (native, ieee, nelem)
+
+real	native[ARB]		#I input native floating format array
+real	ieee[ARB]		#O output IEEE floating format array
+int	nelem			#I number of floating point numbers
+
+int	i
+real	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenanr/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	if (mapout == NO) {
+	    if (IEEE_SWAP == YES)
+		call BSWAP (native, 1, ieee, 1, nelem * NSWAP)
+	    else
+		call amovr (native, ieee, nelem)
+	} else {
+	    do i = 1, nelem
+		if (native[i] == native_NaN) {
+		    ieee(i) = ieee_NaN
+		    nout = nout + 1
+		} else
+		    ieee[i] = native[i]
+
+	    # Byteswap if necessary.
+	    if (IEEE_SWAP == YES)
+		call BSWAP (ieee, 1, ieee, 1, nelem * NSWAP)
+	}
+end
+
+
+# IEEVUPK -- Convert an array in IEEE floating format into the native
+# floating point format.  The input and output arrays can be the same.
+
+procedure ieevupkr (ieee, native, nelem)
+
+real	ieee[ARB]		#I input IEEE floating format array
+real	native[ARB]		#O output native floating format array
+int	nelem			#I number of floating point numbers
+
+int	i
+real	fval
+int	ival[1]
+%	equivalence (fval, ival)
+
+real	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenanr/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	if (IEEE_SWAP == YES) {
+	    call BSWAP (ieee, 1, native, 1, nelem * NSWAP)
+	    if (mapin != NO)
+		do i = 1, nelem {
+		    fval = native[i]
+	            if (and (ival[IOFF], NaNmask) == NaNmask) {
+			native[i] = native_NaN
+			nin = nin + 1
+		    }
+		}
+	} else {
+	    if (mapin == NO)
+		call amovr (ieee, native, nelem)
+	    else {
+		do i = 1, nelem {
+		    fval = ieee[i]
+	            if (and (ival[IOFF], NaNmask) == NaNmask) {
+			native[i] = native_NaN
+			nin = nin + 1
+		    } else
+			native[i] = ieee[i]
+		}
+	    }
+	}
+end
+
+
+# IEEPAK -- Convert a native floating point number into IEEE format.
+
+procedure ieepakr (x)
+
+real	x			#U datum to be converted
+
+real	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenanr/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	if (mapout != NO)
+	    if (x == native_NaN) {
+		x = ieee_NaN
+		nout = nout + 1
+	    }
+	if (IEEE_SWAP == YES)
+	    call BSWAP (x, 1, x, 1, NSWAP)
+end
+
+
+# IEEUPK -- Convert an IEEE format number into native floating point.
+
+procedure ieeupkr (x)
+
+real	x			#U datum to be converted
+
+real	fval
+int	ival[1]
+%	equivalence (fval, ival)
+
+real	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenanr/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	if (IEEE_SWAP == YES)
+	    call BSWAP (x, 1, x, 1, NSWAP)
+	if (mapin != NO) {
+	    fval = x
+	    if (and (ival[IOFF], NaNmask) == NaNmask) {
+	        x = native_NaN
+		nin = nin + 1
+	    }
+	}
+end
+
+
+# IEESNAN -- Set the native floating point value used to replace NaNs and
+# overflows when converting IEEE to native.  This must be a legal (finite)
+# native floating point value.  Setting the reserved native pseudo-NaN value
+# has the side effect of enabling NaN mapping and zeroing the statistics
+# counters.
+
+procedure ieesnanr (x)
+
+real	x			#I native value which will replace NaN
+
+real	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenanr/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	native_NaN = x
+	call ieemapr (YES, YES)
+	nin = 0
+	nout = 0
+end
+
+
+# IEEGNAN -- Get the NaN value.
+
+procedure ieegnanr (x)
+
+real	x			#O native value which will replace NaN
+
+real	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenanr/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	x = native_NaN
+end
+
+
+# IEESTAT -- Return statistics on the number of NaNs encountered in input
+# conversions (unpack) and output conversions (pack).
+
+procedure ieestatr (o_nin, o_nout)
+
+int	o_nin				#O number of NaN seen on input
+int	o_nout				#O number of NaN values output
+
+real	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenanr/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	o_nin = nin
+	o_nout = nout
+end
+
+
+# IEEZSTAT -- Zero the statistics counters.
+
+procedure ieezstatr ()
+
+real	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenanr/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	nin = 0
+	nout = 0
+end
+
+
+# MACHINE DEPENDENT PART.
+# ---------------------------
+
+# IEEMAP -- Enable or disable NaN mapping.
+#
+# sEEE EEEE Emmm mmmm mmmm mmmm mmmm mmmm
+#  3           2            1           0
+# 1098 7654 3210 9876 5432 1098 7654 3210
+#    7    f    8    0    0    0    0    0
+
+procedure ieemapr (inval, outval)
+
+int	inval				#I enable NaN mapping for input?
+int	outval				#I enable NaN mapping for output?
+
+# MACHDEP.
+%	real r_quiet_nan
+
+real	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenanr/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	mapin = inval
+	mapout = outval
+
+	# MACHDEP.
+	if (mapout == YES)
+%	    ieeenn = r_quiet_NaN()
+
+	if (mapin == YES)
+	    NaNmask = 7F800000X
+end
diff --git a/unix/as.mc68020/ishift.s b/unix/as.mc68020/ishift.s
new file mode 100644
index 00000000..cfd6d7e9
--- /dev/null
+++ b/unix/as.mc68020/ishift.s
@@ -0,0 +1,44 @@
+|# IAND, IOR, ISHIFT -- Bitwise boolean integer functions for the NCAR
+|# package.  The shift function must rotate the bits left and around
+|# if the nbits to shift argument is positive, and zero fill at the left
+|# if the shift is negative (right shift).
+|#
+|# (SUN/UNIX MC68xxx version)
+
+|# AND -- Bitwise boolean AND: C = AND (A, B)
+	.text
+	.globl	_iand_
+_iand_:
+	movl	sp@(4),a0
+	movl	a0@,d0
+	movl	sp@(8),a0
+	andl	a0@,d0
+	rts
+	
+
+|# OR -- Bitwise boolean OR: C = OR (A, B)
+	.text
+	.globl	_ior_
+_ior_:
+	movl	sp@(4),a0
+	movl	a0@,d0
+	movl	sp@(8),a0
+	orl	a0@,d0
+	rts
+
+
+|# ISHIFT -- Bitwise shift:  C = ISHIFT (A, NBITS), +=left
+	.text
+	.globl	_ishift_
+_ishift_:
+	movl	sp@(4),a0
+	movl	a0@,d0
+	movl	sp@(8),a0
+	movl	a0@,d1
+	blt	L1
+	roll	d1,d0		|# left rotate (high bits come in at right)
+	rts
+L1:
+	negl	d1
+	lsrl	d1,d0		|# logical shift right (zero at left)
+	rts
diff --git a/unix/as.mc68020/zsvjmp.s b/unix/as.mc68020/zsvjmp.s
new file mode 100644
index 00000000..efebe43e
--- /dev/null
+++ b/unix/as.mc68020/zsvjmp.s
@@ -0,0 +1,37 @@
+|# ZSVJMP, ZDOJMP -- Set up a jump (non-local goto) by saving the processor
+|# registers in the buffer jmpbuf.  A subsequent call to ZDOJMP restores
+|# the registers, effecting a call in the context of the procedure which
+|# originally called ZSVJMP, but with the new status code.  These are Fortran
+|# callable procedures.
+|#
+|# (SUN/UNIX MC68xxx version)
+ 
+        .text
+        .globl  _zsvjmp_
+
+	|# The following has nothing to do with ZSVJMP, and is included here
+	|# only because this assembler module is loaded with every process.
+	|# This code sets the value of the symbol MEM (the Mem common) to zero,
+	|# setting the origin for IRAF pointers to zero rather than some
+	|# arbitrary value, and ensuring that the MEM common is aligned for
+	|# all datatypes as well as page aligned.  A further advantage is that
+	|# references to NULL pointers will cause a memory violation.
+
+	.globl	_mem_
+	_mem_	=	0
+
+        JMPBUF	=       4
+        STATUS  =       8
+
+	|# The strategy here is to build on the services provided by the C
+	|# setjmp/longjmp.  Note that we cannot do this by writing a C function
+	|# which calls setjmp, because the procedure which calls setjmp cannot
+	|# return before the longjmp is executed.
+
+_zsvjmp_:	|# CALL ZSVJMP (JMPBUF, STATUS)
+        movl    sp@(JMPBUF),a0          |# set A0 to point to jmp_buf 
+        movl    sp@(STATUS),a1          |# A1 = status variable 
+        movl    a1,a0@			|# JB[0] = addr of status variable
+	clrl	a1@			|# return zero status
+	addql	#4,sp@(JMPBUF)		|# skip first cell of jmp_buf
+        jmp     _setjmp			|# let setjmp do the rest.
diff --git a/unix/as.mc68020/zsvjmp.s.ORIG b/unix/as.mc68020/zsvjmp.s.ORIG
new file mode 100644
index 00000000..4789d053
--- /dev/null
+++ b/unix/as.mc68020/zsvjmp.s.ORIG
@@ -0,0 +1,49 @@
+|# ZSVJMP, ZDOJMP -- Set up a jump (non-local goto) by saving the processor
+|# registers in the buffer jmpbuf.  A subsequent call to ZDOJMP restores
+|# the registers, effecting a call in the context of the procedure which
+|# originally called ZSVJMP, but with the new status code.  These are Fortran
+|# callable procedures.
+|#
+|# (SUN/UNIX MC68xxx version)
+ 
+        .text
+        .globl  _zsvjmp_
+        .globl  _zdojmp_
+
+	|# The following has nothing to do with ZSVJMP, and is included here
+	|# only because this assembler module is loaded with every process.
+	|# This code sets the value of the symbol MEM (the Mem common) to zero,
+	|# setting the origin for IRAF pointers to zero rather than some
+	|# arbitrary value, and ensuring that the MEM common is aligned for
+	|# all datatypes as well as page aligned.  A further advantage is that
+	|# references to NULL pointers will cause a memory violation.
+
+	.globl	_mem_
+	_mem_	=	0
+
+        JMPBUF	=       4
+        STATUS  =       8
+        REGMASK	=       0xfcfc  	|# D2-D7,A2-A5,A6,A7=sp 
+
+_zsvjmp_:
+        movl    sp@(JMPBUF),a0          |# set A0 to point to jmpbuf 
+        movl    sp@(STATUS),a1          |# A1 = status variable 
+        movl    a1,a0@                  |# JB[1] = addr of status variable 
+        clrl    a1@                     |# status = 0 
+        movl    sp@+,a1                 |# A1   = return address 
+        movl    a1,a0@(4)               |# JB[2] = return address for longjmp 
+        moveml  #REGMASK,a0@(8)         |# save register 
+        jmp     a1@                     |# return from subroutine 
+
+_zdojmp_:
+        movl    sp@(STATUS),a0
+        movl    a0@,d0                  |# D0 = status value 
+        bne     L1                      |# branch if not equal to zero 
+        moveq   #1,d0                   |# status must be nonzero 
+L1:
+        movl    sp@(JMPBUF),a0          |# set A0 to point to jmpbuf 
+        movl    a0@,a1                  |# get addr of zsvjmp status variable 
+        movl    d0,a1@                  |# set the status value 
+        moveml  a0@(8),#REGMASK         |# restore registers 
+        movl    a0@(4),a1               |# get return address of zsvjmp 
+        jmp     a1@                     |# return from zsvjmp