sortix-mirror/libc/stdlib/calloc.cpp

41 lines
1.3 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/>.
stdlib/calloc.cpp
Allocates zeroed memory.
*******************************************************************************/
#include <errno.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
extern "C" void* calloc(size_t nmemb, size_t size)
{
if ( size && nmemb && SIZE_MAX / size < nmemb )
return errno = ENOMEM, (void*) NULL;
size_t total = nmemb * size;
void* result = malloc(total);
if ( !result )
return NULL;
memset(result, 0, total);
return result;
}