49 lines
1.9 KiB
C
49 lines
1.9 KiB
C
/* ----------------------------------------------------------------------- *
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*
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* Copyright 2009 Intel Corporation; author H. Peter Anvin
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom
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* the Software is furnished to do so, subject to the following
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* conditions:
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*
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* The above copyright notice and this permission notice shall
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* be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* ----------------------------------------------------------------------- */
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#ifndef _SYSLINUX_ALIGN_H
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#define _SYSLINUX_ALIGN_H
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#include <stdint.h>
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static inline uintptr_t __align_down(uintptr_t __p, uintptr_t __a)
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{
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return __p & ~(__a - 1);
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}
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static inline uintptr_t __align_up(uintptr_t __p, uintptr_t __a)
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{
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return (__p + __a - 1) & ~(__a - 1);
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}
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#define ALIGN_UP(p,a) ((__typeof__(p))__align_up((uintptr_t)(p), (a)))
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#define ALIGN_DOWN(p,a) ((__typeof__(p))__align_down((uintptr_t)(p), (a)))
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#define ALIGN_UP_FOR(p,t) ALIGN_UP(p,sizeof(t))
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#define ALIGN_DOWN_FOR(p,t) ALIGN_DOWN(p,sizeof(t))
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#endif /* _SYSLINUX_ALIGN_H */
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