chiark - git - mdw - mLib/blame_incremental

... / ...

Commit	Line	Data
	1	/* --c--
	2	*
	3	* $Id: align.h,v 1.1 2003/10/12 14:44:26 mdw Exp $
	4	*
	5	* Pointer alignment hack
	6	*
	7	* (c) 2003 Straylight/Edgeware
	8	*/
	9
	10	/----- Licensing notice --------------------------------------------------
	11	*
	12	* This file is part of the mLib utilities library.
	13	*
	14	* mLib is free software; you can redistribute it and/or modify
	15	* it under the terms of the GNU Library General Public License as
	16	* published by the Free Software Foundation; either version 2 of the
	17	* License, or (at your option) any later version.
	18	*
	19	* mLib is distributed in the hope that it will be useful,
	20	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	21	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	22	* GNU Library General Public License for more details.
	23	*
	24	* You should have received a copy of the GNU Library General Public
	25	* License along with mLib; if not, write to the Free
	26	* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
	27	* MA 02111-1307, USA.
	28	*/
	29
	30	/----- Revision history --------------------------------------------------
	31	*
	32	* $Log: align.h,v $
	33	* Revision 1.1 2003/10/12 14:44:26 mdw
	34	* General alignment assumptions and tweaks.
	35	*
	36	*/
	37
	38	#ifndef MLIB_ALIGN_H
	39	#define MLIB_ALIGN_H
	40
	41	#ifdef __cplusplus
	42	extern "C" {
	43	#endif
	44
	45	/----- Data structures ---------------------------------------------------/
	46
	47	union align {
	48	int i;
	49	long l;
	50	double d;
	51	void *p;
	52	void (f)(void );
	53	struct notexist *s;
	54	};
	55
	56	/----- Macros provided ---------------------------------------------------/
	57
	58	#define ALIGN(sz) do { \
	59	sz += sizeof(union align) - 1; \
	60	sz -= sz % sizeof(union align); \
	61	} while (0)
	62
	63	/----- That's all, folks -------------------------------------------------/
	64
	65	#ifdef __cplusplus
	66	}
	67	#endif
	68
	69	#endif