1 files changed, 35 insertions, 0 deletions
diff --git a/sys/pmio/pmsectnc.x b/sys/pmio/pmsectnc.x
new file mode 100644
index 00000000..ce424c3e
--- /dev/null
+++ b/sys/pmio/pmsectnc.x
@@ -0,0 +1,35 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include <pmset.h>
+include	<plio.h>
+
+# PM_SECTNOTCONST -- Test whether the indicated mask image section is constant,
+# i.e., all the mask pixels therein are set to the same value.  If so, return
+# the mask value as an output argument.
+
+bool procedure pm_sectnotconst (pl, vs, ve, ndim, mval)
+
+pointer	pl			#I mask descriptor
+long	vs[PM_MAXDIM]		#I starting coordinates of section
+long	ve[PM_MAXDIM]		#I ending coordinates of section
+int	ndim			#I dimension of section
+int	mval			#O mask value
+
+bool	pl_sectnotconst()
+include	"pmio.com"
+
+begin
+	if (PM_MAPXY(pl) == YES) {
+	    call amovkl ( 1, v1, PM_MAXDIM)
+	    call amovl (vs, v1, ndim)
+	    call imaplv (PM_REFIM(pl), v1, v2, PM_MAXDIM)
+
+	    call amovkl ( 1, v3, PM_MAXDIM)
+	    call amovl (ve, v3, ndim)
+	    call imaplv (PM_REFIM(pl), v3, v4, PM_MAXDIM)
+
+	    return (pl_sectnotconst (pl, v2, v4, PM_MAXDIM, mval))
+
+	} else
+	    return (pl_sectnotconst (pl, vs, ve, ndim, mval))
+end