1 files changed, 62 insertions, 0 deletions
diff --git a/wcsmbs/wmemchr.c b/wcsmbs/wmemchr.c
new file mode 100644
index 0000000000..67c407836d
--- /dev/null
+++ b/wcsmbs/wmemchr.c
@@ -0,0 +1,62 @@
+/* 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>
+
+wchar_t *
+wmemchr (s, c, n)
+     register const wchar_t *s;
+     register wchar_t c;
+     register size_t n;
+{
+  /* For performance reasons unfold the loop four times.  */
+  while (n >= 4)
+    {
+      if (s[0] == c)
+	return (wchar_t *) s;
+      if (s[1] == c)
+	return (wchar_t *) &s[1];
+      if (s[2] == c)
+	return (wchar_t *) &s[2];
+      if (s[3] == c)
+	return (wchar_t *) &s[3];
+      s += 4;
+      n -= 4;
+    }
+
+  if (n > 0)
+    {
+      if (*s == c)
+	return (wchar_t *) s;
+      ++s;
+      --n;
+    }
+  if (n > 0)
+    {
+      if (*s == c)
+	return (wchar_t *) s;
+      ++s;
+      --n;
+    }
+  if (n > 0)
+    if (*s == c)
+      return (wchar_t *) s;
+
+  return NULL;
+}