1 files changed, 21 insertions, 0 deletions
diff --git a/sys/gio/ggview.x b/sys/gio/ggview.x
new file mode 100644
index 00000000..486035b6
--- /dev/null
+++ b/sys/gio/ggview.x
@@ -0,0 +1,21 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<gio.h>
+
+# GGVIEW -- Get the viewport of the current WCS.
+
+procedure ggview (gp, x1, x2, y1, y2)
+
+pointer	gp			# graphics descriptor
+real	x1, x2			# range of NDC in X (output)
+real	y1, y2			# range of NDC in Y (output)
+pointer	w
+
+begin
+	w = GP_WCSPTR (gp, GP_WCS(gp))
+
+	x1 = WCS_SX1(w)
+	x2 = WCS_SX2(w)
+	y1 = WCS_SY1(w)
+	y2 = WCS_SY2(w)
+end