1 files changed, 34 insertions, 0 deletions
diff --git a/pkg/xtools/gtools/gtctran.x b/pkg/xtools/gtools/gtctran.x
new file mode 100644
index 00000000..1b62688f
--- /dev/null
+++ b/pkg/xtools/gtools/gtctran.x
@@ -0,0 +1,34 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# GT_XCTRAN -- Transform x between two WCS.  Return new value as a function.
+
+real procedure gt_xctran (gp, x1, wcs1, wcs2)
+
+pointer	gp			# GIO pointer
+real	x1			# X value to be transformed
+int	wcs1			# Input WCS
+int	wcs2			# Output WCS
+
+real	x2, y2
+
+begin
+	call gctran (gp, x1, 0., x2, y2, wcs1, wcs2)
+	return (x2)
+end
+
+
+# GT_YCTRAN -- Transform y between two WCS.  Return new value as a function.
+
+real procedure gt_yctran (gp, y1, wcs1, wcs2)
+
+pointer	gp			# GIO pointer
+real	y1			# Y value to be transformed
+int	wcs1			# Input WCS
+int	wcs2			# Output WCS
+
+real	x2, y2
+
+begin
+	call gctran (gp, 0., y1, x2, y2, wcs1, wcs2)
+	return (y2)
+end