Update.

	* string/Makefile (tests): Add tst-bswap.
	* string/tst-bswap.c: New file.

1 files changed, 74 insertions, 0 deletions

diff --git a/string/tst-bswap.c b/string/tst-bswap.c
new file mode 100644
index 0000000000..7037c1eb69
--- /dev/null
+++ b/string/tst-bswap.c
@@ -0,0 +1,74 @@
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <byteswap.h>
+#include <stdio.h>
+
+extern unsigned long long int wash (unsigned long long int a);
+
+int
+main (void)
+{
+  int result = 0;
+
+  /* Test the functions with constant arguments.  */
+  if (bswap_16 (0x1234) != 0x3412)
+    {
+      puts ("bswap_16 (constant) flunked");
+      result = 1;
+    }
+  if (bswap_32 (0x12345678) != 0x78563412)
+    {
+      puts ("bswap_32 (constant) flunked");
+      result = 1;
+    }
+  if (bswap_64 (0x1234567890abcdefULL) != 0xefcdab9078563412ULL)
+    {
+      puts ("bswap_64 (constant) flunked");
+      result = 1;
+    }
+
+  /* Test the functions with non-constant arguments.  */
+  if (bswap_16 (wash (0x1234)) != 0x3412)
+    {
+      puts ("bswap_16 (non-constant) flunked");
+      result = 1;
+    }
+  if (bswap_32 (wash (0x12345678)) != 0x78563412)
+    {
+      puts ("bswap_32 (non-constant) flunked");
+      result = 1;
+    }
+  if (bswap_64 (wash (0x1234567890abcdefULL)) != 0xefcdab9078563412ULL)
+    {
+      puts ("bswap_64 (non-constant) flunked");
+      result = 1;
+    }
+
+  return result;
+}
+
+
+unsigned long long int
+wash (unsigned long long int a)
+{
+  /* Do nothing.  This function simply exists to avoid that the compiler
+     regards the argument to the bswap_*() functions as constant.  */
+  return a + 0;
+}