X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fstring%2Fstrrchr.c;h=b29d0a6e26525d236a5d7ec64d963fb2c4e91b3a;hb=c0169638bd02098717cb23fbbca3bcc4e4caccf0;hp=6ce1a3231de2f67bc7be3c5994cecfe165ba1244;hpb=19b4cc9a30c2ede7a0cd6c417b5f26851376b708;p=pdclib

diff --git a/functions/string/strrchr.c b/functions/string/strrchr.c
index 6ce1a32..b29d0a6 100644
--- a/functions/string/strrchr.c
+++ b/functions/string/strrchr.c
@@ -1,26 +1,27 @@
-// ----------------------------------------------------------------------------
-// $Id$
-// ----------------------------------------------------------------------------
-// Public Domain C Library - http://pdclib.sourceforge.net
-// This code is Public Domain. Use, modify, and redistribute at will.
-// ----------------------------------------------------------------------------
+/* $Id$ */
 
-#include <__NULL.h>
+/* Release $Name$ */
 
-char * strrchr( const char * src, int c )
+/* strrchr( const char *, int c )
+
+   This file is part of the Public Domain C Library (PDCLib).
+   Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+#include <string.h>
+
+char * strrchr( const char * s, int c )
 {
-    const char * p = src;
-    while ( *p != '\0' )
+    size_t i = 0;
+    while ( p[i++] );
+    do
     {
-        ++p;
-    }
-    while ( p >= src )
-    {
-        if ( *p == (char) c )
+        if ( p[--i] == (char) c )
         {
-            return (char *) p;
+            return (char *) p + i;
         }
-        --p;
-    }
+    } while ( i );
     return NULL;
 }
+
+#warning Test driver missing.