lib/memalign.c

   1 /* Allocate memory with indefinite extent and specified alignment.
   2    Copyright (C) 2020 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 #include <config.h>
  18
  19 /* Specification.  */
  20 #include <malloc.h>
  21
  22 #include <stdlib.h>
  23
  24 void *
  25 memalign (size_t alignment, size_t size)
  26 #undef memalign
  27 {
  28   if (alignment < 4)
  29     /* The malloc() result has an alignment of at least 4 on all platforms.
  30        On platforms where memalign() exists, malloc() sets errno upon
  31       failure.  */
  32     return malloc (size);
  33
  34   return memalign (alignment, size);
  35 }