1 files changed, 34 insertions, 0 deletions
diff --git a/sys/mwcs/iwfind.x b/sys/mwcs/iwfind.x
new file mode 100644
index 00000000..e400f9ee
--- /dev/null
+++ b/sys/mwcs/iwfind.x
@@ -0,0 +1,34 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	"imwcs.h"
+
+# IW_FINDCARD -- Search the card list in the IMWCS descriptor for a card of
+# the given type, with the given axis and index numbers.  Return a pointer to
+# the card if found, else NULL.
+
+pointer procedure iw_findcard (iw, type, axis, index)
+
+pointer	iw			#I pointer to IMWCS descriptor
+int	type			#I card type code
+int	axis			#I axis number, or <0 to ignore
+int	index			#I index number, or <=0 to ignore
+
+int	i
+pointer	cp
+
+begin
+	do i = 1, IW_NCARDS(iw) {
+	    cp = IW_CARD(iw,i)
+	    if (C_TYPE(cp) != type)
+		next
+	    if (axis >= 0)
+		if (C_AXIS(cp) != axis)
+		    next
+	    if (index > 0)
+		if (C_INDEX(cp) != index)
+		    next
+	    return (cp)
+	}
+
+	return (NULL)
+end