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/* Copyright (C) 2004 The KOS Team
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
USA.
*/
#ifndef _SOS_MACROS_H_
#define _SOS_MACROS_H_
/** Align on a boundary (MUST be a power of 2), so that return value <= val */
#define SOS_ALIGN_INF(val,boundary) \
(((unsigned)(val)) & (~((boundary)-1)))
/** Align on a boundary (MUST be a power of 2), so that return value >= val */
#define SOS_ALIGN_SUP(val,boundary) \
({ unsigned int __bnd=(boundary); \
(((((unsigned)(val))-1) & (~(__bnd - 1))) + __bnd); })
/** Check whether val is aligned on a boundary (MUST be a power of 2) */
#define SOS_IS_ALIGNED(val,boundary) \
( 0 == (((unsigned)(val)) & ((boundary)-1)) )
/**
* @return TRUE if val is a power of 2.
* @note val is evaluated multiple times
*/
#define SOS_IS_POWER_OF_2(val) \
((((val) - 1) & (val)) == 0)
#endif /* _SOS_MACROS_H_ */
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