1 files changed, 84 insertions, 0 deletions
diff --git a/wcsmbs/wmemcmp.c b/wcsmbs/wmemcmp.c
new file mode 100644
index 0000000000..f96cad9c0e
--- /dev/null
+++ b/wcsmbs/wmemcmp.c
@@ -0,0 +1,84 @@
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>
+
+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 <wchar.h>
+
+
+int
+wmemcmp (s1, s2, n)
+     const wchar_t *s1;
+     const wchar_t *s2;
+     size_t n;
+{
+  register uwchar_t c1;
+  register uwchar_t c2;
+
+  while (n >= 4)
+    {
+      c1 = (uwchar_t) s1[0];
+      c2 = (uwchar_t) s2[0];
+      if (c1 - c2 != 0)
+	return c1 - c2;
+      c1 = (uwchar_t) s1[1];
+      c2 = (uwchar_t) s2[1];
+      if (c1 - c2 != 0)
+	return c1 - c2;
+      c1 = (uwchar_t) s1[2];
+      c2 = (uwchar_t) s2[2];
+      if (c1 - c2 != 0)
+	return c1 - c2;
+      c1 = (uwchar_t) s1[3];
+      c2 = (uwchar_t) s2[3];
+      if (c1 - c2 != 0)
+	return c1 - c2;
+      s1 += 4;
+      s2 += 4;
+      n -= 4;
+    }
+
+  if (n > 0)
+    {
+      c1 = (uwchar_t) s1[0];
+      c2 = (uwchar_t) s2[0];
+      if (c1 - c2 != 0)
+	return c1 - c2;
+      ++s1;
+      ++s2;
+      --n;
+    }
+  if (n > 0)
+    {
+      c1 = (uwchar_t) s1[0];
+      c2 = (uwchar_t) s2[0];
+      if (c1 - c2 != 0)
+	return c1 - c2;
+      ++s1;
+      ++s2;
+      --n;
+    }
+  if (n > 0)
+    {
+      c1 = (uwchar_t) s1[0];
+      c2 = (uwchar_t) s2[0];
+      if (c1 - c2 != 0)
+	return c1 - c2;
+    }
+
+  return 0;
+}