2.5-18.1

string/strrchr.c

@@ -0,0 +1,50 @@
+/* Copyright (C) 1991, 1995, 1996, 1997, 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <string.h>
+
+#undef strrchr
+
+/* Find the last occurrence of C in S.  */
+char *
+strrchr (const char *s, int c)
+{
+  register const char *found, *p;
+
+  c = (unsigned char) c;
+
+  /* Since strchr is fast, we use it rather than the obvious loop.  */
+
+  if (c == '\0')
+    return strchr (s, '\0');
+
+  found = NULL;
+  while ((p = strchr (s, c)) != NULL)
+    {
+      found = p;
+      s = p + 1;
+    }
+
+  return (char *) found;
+}
+
+#ifdef weak_alias
+#undef rindex
+weak_alias (strrchr, rindex)
+#endif
+libc_hidden_builtin_def (strrchr)