sortix-mirror/libc/string/memchr.c

35 lines
1.2 KiB
C

/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2011, 2012, 2014.
This file is part of the Sortix C Library.
The Sortix C Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
The Sortix C Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
string/memchr.c
Scans memory for a character.
*******************************************************************************/
#include <string.h>
void* memchr(const void* s, int c, size_t size)
{
const unsigned char* buf = (const unsigned char*) s;
for ( size_t i = 0; i < size; i++ )
if ( buf[i] == (unsigned char) c )
return (void*) (buf + i);
return NULL;
}