1 files changed, 55 insertions, 0 deletions
diff --git a/librols/swabbytes.c b/librols/swabbytes.c
new file mode 100644
index 0000000..f2c9a57
--- /dev/null
+++ b/librols/swabbytes.c
@@ -0,0 +1,55 @@
+/*
+ * This file has been modified for the cdrkit suite.
+ *
+ * The behaviour and appearence of the program code below can differ to a major
+ * extent from the version distributed by the original author(s).
+ *
+ * For details, see Changelog file distributed with the cdrkit package. If you
+ * received this file from another source then ask the distributing person for
+ * a log of modifications.
+ *
+ */
+
+/* @(#)swabbytes.c	1.6 03/06/15 Copyright 1988, 1995-2003 J. Schilling */
+/*
+ *	swab bytes in memory
+ *
+ *	Copyright (c) 1988, 1995-2003 J. Schilling
+ */
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; see the file COPYING.  If not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <standard.h>
+#include <schily.h>
+
+#define	DO8(a)	a; a; a; a; a; a; a; a;
+
+EXPORT void
+swabbytes(vp, cnt)
+		void	*vp;
+	register int	cnt;
+{
+	register char	*bp = (char *)vp;
+	register char	c;
+
+	cnt /= 2;	/* even count only */
+	while ((cnt -= 8) >= 0) {
+		DO8(c = *bp++; bp[-1] = *bp; *bp++ = c;);
+	}
+	cnt += 8;
+	while (--cnt >= 0) {
+		c = *bp++; bp[-1] = *bp; *bp++ = c;
+	}
+}