From fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4 Mon Sep 17 00:00:00 2001
From: Joseph Hunkeler <jhunkeler@gmail.com>
Date: Wed, 8 Jul 2015 20:46:52 -0400
Subject: Initial commit

---
 sys/osb/achtbr.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 sys/osb/achtbr.c

(limited to 'sys/osb/achtbr.c')

diff --git a/sys/osb/achtbr.c b/sys/osb/achtbr.c
new file mode 100644
index 00000000..72839ce9
--- /dev/null
+++ b/sys/osb/achtbr.c
@@ -0,0 +1,24 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define	import_spp
+#define import_knames
+#include <iraf.h>
+
+/* ACHTB_ -- Unpack an unsigned byte array into an SPP array.
+ * The loop runs in the reverse direction so that the unpack can be
+ * performed in place (a and b can be the same array).
+ */
+void
+ACHTBR (
+  XCHAR		*a,
+  XREAL	*b,
+  XINT		*npix
+)
+{
+	register XUBYTE	*ip, *first = (XUBYTE *)a;
+	register XREAL	*op;
+
+	for (ip = &first[*npix], op = &((XREAL *)b)[*npix];  ip > first;  )
+		*--op = *--ip;
+}
-- 
cgit