sortix-mirror/libc/stdlib/qsort.c

36 lines
1.2 KiB
C

/*
* Copyright (c) 2012, 2014 Jonas 'Sortie' Termansen.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* stdlib/qsort.c
* Sort an array.
*/
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
static int compare_wrapper(const void* a, const void* b, void* arg)
{
return ((int (*)(const void*, const void*)) arg)(a, b);
}
void qsort(void* base_ptr,
size_t num_elements,
size_t element_size,
int (*compare)(const void*, const void*))
{
qsort_r(base_ptr, num_elements, element_size, compare_wrapper, (void*) compare);
}