X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fstring%2Fstrrchr.c;h=4fe9a6b49acd8c00597b5da7bbd567985880883e;hb=ba5eff8dd9b426485e1559b5d6204692d155d9e8;hp=4249de3b17489863468b9735ac679978d97459e4;hpb=34893ecc2200dc7017c36a54cb6c5f4c2378b5ec;p=pdclib

diff --git a/functions/string/strrchr.c b/functions/string/strrchr.c
index 4249de3..4fe9a6b 100644
--- a/functions/string/strrchr.c
+++ b/functions/string/strrchr.c
@@ -1,17 +1,34 @@
-// ----------------------------------------------------------------------------
-// $Id$
-// ----------------------------------------------------------------------------
-// Public Domain C Library - http://pdclib.sourceforge.net
-// This code is Public Domain. Use, modify, and redistribute at will.
-// ----------------------------------------------------------------------------
+/* $Id$ */
 
-// ----------------------------------------------------------------------------
-// C++
+/* Release $Name$ */
 
-const char * strrchr( const char * s, int c ) { /* TODO */ };
-char * strrchr( char * s, int c ) { /* TODO */ };
+/* strrchr( const char *, int c )
 
-// ----------------------------------------------------------------------------
-// Standard C
+   This file is part of the Public Domain C Library (PDCLib).
+   Permission is granted to use, modify, and / or redistribute at will.
+*/
 
-char * strrchr( const char * s, int c ) { /* TODO */ };
+#include <string.h>
+
+char * strrchr( const char * s, int c )
+{
+    size_t i = 0;
+    while ( s[i++] );
+    do
+    {
+        if ( s[--i] == (char) c )
+        {
+            return (char *) s + i;
+        }
+    } while ( i );
+    return NULL;
+}
+
+#warning Test driver missing.
+
+#ifdef TEST
+int main()
+{
+    return 0;
+}
+#endif