X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fstring%2Fstrlen.c;h=17ab3cfd948b4331b43904a9f8f959b6db011347;hb=40d0246771c8e593d4b5fdc97dd87b4afd260be2;hp=62ab7a147cee519f17d70f5e3cbc3ee0f9f3f958;hpb=34893ecc2200dc7017c36a54cb6c5f4c2378b5ec;p=pdclib

diff --git a/functions/string/strlen.c b/functions/string/strlen.c
index 62ab7a1..17ab3cf 100644
--- a/functions/string/strlen.c
+++ b/functions/string/strlen.c
@@ -1,8 +1,37 @@
-// ----------------------------------------------------------------------------
-// $Id$
-// ----------------------------------------------------------------------------
-// Public Domain C Library - http://pdclib.sourceforge.net
-// This code is Public Domain. Use, modify, and redistribute at will.
-// ----------------------------------------------------------------------------
-
-size_t strlen( const char * s ) { /* TODO */ };
+/* $Id$ */
+
+/* Release $Name$ */
+
+/* strlen( const char * )
+
+   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>
+
+#ifndef REGTEST
+
+size_t strlen( const char * s )
+{
+    size_t rc = 0;
+    while ( s[rc] )
+    {
+        ++rc;
+    }
+    return rc;
+}
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main()
+{
+    BEGIN_TESTS;
+    TESTCASE( strlen( abcde ) == 5 );
+    TESTCASE( strlen( "" ) == 0 );
+    return TEST_RESULTS;
+}
+#endif