-// ----------------------------------------------------------------------------
-// $Id$
-// ----------------------------------------------------------------------------
-// Public Domain C Library - http://pdclib.sourceforge.net
-// This code is Public Domain. Use, modify, and redistribute at will.
-// ----------------------------------------------------------------------------
+/* $Id$ */
-// ----------------------------------------------------------------------------
-// C++
+/* memchr( const void *, int, size_t )
-const void * memchr( const void * s, int c, size_t n ) { /* TODO */ };
-void * memchr( void * s, int c, size_t n ) { /* TODO */ };
+ This file is part of the Public Domain C Library (PDCLib).
+ Permission is granted to use, modify, and / or redistribute at will.
+*/
-// ----------------------------------------------------------------------------
-// Standard C
+#include <string.h>
-void * memchr( const void * s, int c, size_t n ) { /* TODO */ };
+#ifndef REGTEST
-/* PDPC code - unreviewed
+void * memchr( const void * s, int c, size_t n )
{
- const unsigned char *p;
- size_t x = 0;
-
- p = (const unsigned char *)s;
- while (x < n)
+ const unsigned char * p = (const unsigned char *) s;
+ while ( n-- )
{
- if (*p == (unsigned char)c) return ((void *)p);
- p++;
- x++;
+ if ( *p == (unsigned char) c )
+ {
+ return (void *) p;
+ }
+ ++p;
}
- return (NULL);
+ return NULL;
}
-*/
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main( void )
+{
+ TESTCASE( memchr( abcde, 'c', 5 ) == &abcde[2] );
+ TESTCASE( memchr( abcde, 'a', 1 ) == &abcde[0] );
+ TESTCASE( memchr( abcde, 'a', 0 ) == NULL );
+ TESTCASE( memchr( abcde, '\0', 5 ) == NULL );
+ TESTCASE( memchr( abcde, '\0', 6 ) == &abcde[5] );
+ return TEST_RESULTS;
+}
+
+#endif