1 /* vi: set sw=4 ts=4: */
2 /* posix_memalign for uClibc
3 *
4 * Copyright (C) 1996-2002, 2003, 2004, 2005 Free Software Foundation, Inc.
5 * Copyright (C) 2005 by Erik Andersen <andersen@uclibc.org>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU Library General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
15 * for more details.
16 *
17 * You should have received a copy of the GNU Library General Public License
18 * along with this program; see the file COPYING.LIB. If not, see
19 * <http://www.gnu.org/licenses/>.
20 */
21
22 #include <stdlib.h>
23 #include <malloc.h>
24 #include <sys/types.h>
25 #include <errno.h>
26 #include <sys/param.h>
27
posix_memalign(void ** memptr,size_t alignment,size_t size)28 int posix_memalign(void **memptr, size_t alignment, size_t size)
29 {
30 /* Make sure alignment is correct. */
31 if (alignment % sizeof(void *) != 0)
32 /* Skip these checks because the memalign() func does them for us
33 || !powerof2(alignment / sizeof(void *)) != 0
34 || alignment == 0
35 */
36 return EINVAL;
37
38 *memptr = memalign(alignment, size);
39
40 return (*memptr != NULL ? 0 : ENOMEM);
41 }
42