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/* Check stack alignment. Generic version.
Copyright (C) 2003-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU 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 2.1 of the License, or (at your option) any later version.
The GNU 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 GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <stdio.h>
#include <stdint.h>
int
__attribute__ ((weak, noclone, noinline))
is_aligned (void *p, int align)
{
return (((uintptr_t) p) & (align - 1)) != 0;
}
#ifndef TEST_STACK_ALIGN_INIT
# define TEST_STACK_ALIGN_INIT() 0
#endif
#define TEST_STACK_ALIGN() \
({ \
double _d = 12.0; \
long double _ld = 15.0; \
int _ret = TEST_STACK_ALIGN_INIT (); \
\
printf ("double: %g %p %zu\n", _d, &_d, __alignof (double)); \
_ret += is_aligned (&_d, __alignof (double)); \
\
printf ("ldouble: %Lg %p %zu\n", _ld, &_ld, \
__alignof (long double)); \
_ret += is_aligned (&_ld, __alignof (long double)); \
_ret; \
})
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