stddef.h (1440B)
1 /* -*-comment-start: "//";comment-end:""-*- 2 * GNU Mes --- Maxwell Equations of Software 3 * Copyright © 2017 Jan (janneke) Nieuwenhuizen <janneke@gnu.org> 4 * Copyright © 2021 Danny Milosavljevic <dannym@scratchpost.org> 5 * 6 * This file is part of GNU Mes. 7 * 8 * GNU Mes is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 3 of the License, or (at 11 * your option) any later version. 12 * 13 * GNU Mes is distributed in the hope that it will be useful, but 14 * WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with GNU Mes. If not, see <http://www.gnu.org/licenses/>. 20 */ 21 #ifndef __MES_STDDEF_H 22 #define __MES_STDDEF_H 1 23 24 #if SYSTEM_LIBC 25 #undef __MES_STDDEF_H 26 #include_next <stddef.h> 27 #else // ! SYSTEM_LIBC 28 29 #include <sys/types.h> 30 #include <stdint.h> 31 #include <unistd.h> 32 33 #ifndef offsetof 34 #if __MESC__ 35 #define offsetof(type, field) (&((type *)0)->field) 36 #else // !__MESC__ 37 #define offsetof(type, field) ((size_t)&((type *)0)->field) 38 #endif // !__MESC__ 39 #endif // offsetof 40 41 /* Note: on banana gcc, max_align_t is 16 Byte big instead! */ 42 43 typedef double max_align_t; 44 45 #endif // ! SYSTEM_LIBC 46 47 #endif // __MES_STDDEF_H