/* Copyright (C) 2005-2014 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 <http://www.gnu.org/licenses/>. */ #include <stdio.h> #include <stdint.h> #define TEST_STACK_ALIGN() \ ({ \ /* Altivec __vector int etc. needs 16byte aligned stack. \ Instead of using altivec.h here, use aligned attribute instead. */ \ struct _S \ { \ int _i __attribute__((aligned (16))); \ int _j[3]; \ } _s = { ._i = 18, ._j[0] = 19, ._j[1] = 20, ._j[2] = 21 }; \ double _d = 12.0; \ long double _ld = 15.0; \ int _ret = 0; \ printf ("__vector int: { %d, %d, %d, %d } %p %zu\n", _s._i, _s._j[0], \ _s._j[1], _s._j[2], &_s, __alignof (_s)); \ if ((((uintptr_t) &_s) & (__alignof (_s) - 1)) != 0) \ _ret = 1; \ \ printf ("double: %g %p %zu\n", _d, &_d, __alignof (double)); \ if ((((uintptr_t) &_d) & (__alignof (double) - 1)) != 0) \ _ret = 1; \ \ printf ("ldouble: %Lg %p %zu\n", _ld, &_ld, __alignof (long double)); \ if ((((uintptr_t) &_ld) & (__alignof (long double) - 1)) != 0) \ _ret = 1; \ _ret; \ })