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/* memchr( const void *, int, size_t )
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
void * memchr( const void * s, int c, size_t n )
{
const unsigned char * p = ( const unsigned char * ) s;
while ( n-- )
{
if ( *p == ( unsigned char ) c )
{
return ( void * ) p;
}
++p;
}
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
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