mirror of
https://github.com/zephyrproject-rtos/zephyr
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5a4be58707
Revises kernel so that it uses the standard boolean type library defined for C99, rather than having its own custom boolean type. Also revises sample projects that used the non-standard type. Change-Id: Ib41b7f836da25352aa5ae9dfbbfdd29739017b6f Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
93 lines
2.7 KiB
C
93 lines
2.7 KiB
C
/* util.h - misc utilities */
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/*
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* Copyright (c) 2011-2014, Wind River Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2) Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3) Neither the name of Wind River Systems nor the names of its contributors
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* may be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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DESCRIPTION
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Misc utilities usable by nanokernel, microkernel, and application code.
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*/
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#ifndef _UTIL__H_
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#define _UTIL__H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define ARRAY_SIZE(array) (sizeof(array) / sizeof((array)[0]))
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#ifndef _ASMLANGUAGE
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/* round "x" up/down to next multiple of "align" (which must be a power of 2) */
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#define ROUND_UP(x, align) \
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(((unsigned long)(x) + ((unsigned long)align - 1)) & \
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~((unsigned long)align - 1))
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#define ROUND_DOWN(x, align) ((unsigned long)(x) & ~((unsigned long)align - 1))
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#ifdef INLINED
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#define INLINE inline
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#else
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#define INLINE
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#endif
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#ifndef NULL
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#define NULL ((void *)0)
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#endif
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#ifndef max
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#define max(a, b) (((a) > (b)) ? (a) : (b))
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#endif
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#ifndef min
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#define min(a, b) (((a) < (b)) ? (a) : (b))
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#endif
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static inline int _IsPowerOfTwo(unsigned int x)
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{
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return (x != 0) && !(x & (x - 1));
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}
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#endif /* !_ASMLANGUAGE */
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/* KB, MB, GB */
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#define KB(x) ((x) << 10)
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#define MB(x) (KB(x) << 10)
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#define GB(x) (MB(x) << 10)
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/* KHZ, MHZ */
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#define KHZ(x) ((x) * 1000)
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#define MHZ(x) (KHZ(x) * 1000)
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#ifdef __cplusplus
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}
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#endif
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#endif /* _UTIL__H_ */
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