/*
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* Copyright (c) 2014, STMicroelectronics International N.V.
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* All rights reserved.
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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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* 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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#ifndef UTIL_H
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#define UTIL_H
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#include <stdint.h>
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#ifndef MAX
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#define MAX(a, b) \
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(__extension__({ __typeof__(a) _a = (a); \
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__typeof__(b) _b = (b); \
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_a > _b ? _a : _b; }))
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#define MIN(a, b) \
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(__extension__({ __typeof__(a) _a = (a); \
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__typeof__(b) _b = (b); \
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_a < _b ? _a : _b; }))
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#endif
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#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
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/* Round up the even multiple of size, size has to be a multiple of 2 */
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#define ROUNDUP(v, size) (((v) + ((size) - 1)) & ~((size) - 1))
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/* Round down the even multiple of size, size has to be a multiple of 2 */
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#define ROUNDDOWN(v, size) ((v) & ~((size) - 1))
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/* x has to be of an unsigned type */
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#define IS_POWER_OF_TWO(x) (((x) != 0) && (((x) & (~(x) + 1)) == (x)))
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#define ALIGNMENT_IS_OK(p, type) \
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(((uintptr_t)(p) & (__alignof__(type) - 1)) == 0)
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#define TO_STR(x) _TO_STR(x)
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#define _TO_STR(x) #x
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#define container_of(ptr, type, member) \
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(__extension__({ \
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const typeof(((type *)0)->member) *__ptr = (ptr); \
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(type *)((unsigned long)(__ptr) - offsetof(type, member)); \
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}))
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#ifdef ASM
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#define BIT32(nr) (1 << (nr))
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#define BIT64(nr) (1 << (nr))
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#define SHIFT_U32(v, shift) ((v) << (shift))
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#define SHIFT_U64(v, shift) ((v) << (shift))
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#else
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#define BIT32(nr) (UINT32_C(1) << (nr))
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#define BIT64(nr) (UINT64_C(1) << (nr))
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#define SHIFT_U32(v, shift) ((uint32_t)(v) << (shift))
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#define SHIFT_U64(v, shift) ((uint64_t)(v) << (shift))
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#endif
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#define BIT(nr) BIT32(nr)
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#endif /*UTIL_H*/
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