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173 lines
3.5 KiB
173 lines
3.5 KiB
/*
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* Copyright 2009-2015 Samy Al Bahra.
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* Copyright 2014 Paul Khuong.
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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
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* 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 AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef CK_CC_H
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#define CK_CC_H
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#if defined(__GNUC__) || defined(__SUNPRO_C)
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#include "gcc/ck_cc.h"
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#endif
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#ifndef CK_CC_RESTRICT
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#define CK_CC_RESTRICT
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#endif
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#define CK_CC_DECONST_PTR(X) ((void *)(uintptr_t)(X))
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/*
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* Container function.
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* This relies on (compiler) implementation-defined behavior.
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*/
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#define CK_CC_CONTAINER(F, T, M, N) \
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CK_CC_INLINE static T * \
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N(F *p) \
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{ \
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F *n = p; \
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return (T *)(void *)(((char *)n) - ((size_t)&((T *)0)->M)); \
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}
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#define CK_CC_PAD(x) union { char pad[x]; }
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#ifndef CK_CC_ALIASED
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#define CK_CC_ALIASED
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#endif
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#ifndef CK_CC_UNUSED
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#define CK_CC_UNUSED
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#endif
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#ifndef CK_CC_USED
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#define CK_CC_USED
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#endif
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#ifndef CK_CC_IMM
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#define CK_CC_IMM
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#endif
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#ifndef CK_CC_PACKED
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#define CK_CC_PACKED
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#endif
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#ifndef CK_CC_WEAKREF
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#define CK_CC_WEAKREF
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#endif
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#ifndef CK_CC_ALIGN
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#define CK_CC_ALIGN(X)
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#endif
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#ifndef CK_CC_CACHELINE
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#define CK_CC_CACHELINE
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#endif
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#ifndef CK_CC_LIKELY
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#define CK_CC_LIKELY(x) x
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#endif
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#ifndef CK_CC_UNLIKELY
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#define CK_CC_UNLIKELY(x) x
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#endif
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#ifndef CK_CC_TYPEOF
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#define CK_CC_TYPEOF(X, DEFAULT) (DEFAULT)
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#endif
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#ifndef CK_F_CC_FFS
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#define CK_F_CC_FFS
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CK_CC_INLINE static int
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ck_cc_ffs(unsigned int x)
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{
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unsigned int i;
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if (x == 0)
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return 0;
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for (i = 1; (x & 1) == 0; i++, x >>= 1);
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return i;
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}
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#endif
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#ifndef CK_F_CC_CLZ
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#define CK_F_CC_CLZ
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#include <ck_limits.h>
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CK_CC_INLINE static int
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ck_cc_clz(unsigned int x)
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{
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unsigned int count, i;
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for (count = 0, i = sizeof(unsigned int) * CHAR_BIT; i > 0; count++) {
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unsigned int bit = 1U << --i;
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if (x & bit)
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break;
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}
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return count;
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}
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#endif
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#ifndef CK_F_CC_CTZ
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#define CK_F_CC_CTZ
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CK_CC_INLINE static int
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ck_cc_ctz(unsigned int x)
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{
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unsigned int i;
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if (x == 0)
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return 0;
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for (i = 0; (x & 1) == 0; i++, x >>= 1);
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return i;
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}
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#endif
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#ifndef CK_F_CC_POPCOUNT
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#define CK_F_CC_POPCOUNT
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CK_CC_INLINE static int
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ck_cc_popcount(unsigned int x)
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{
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unsigned int acc;
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for (acc = 0; x != 0; x >>= 1)
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acc += x & 1;
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return acc;
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}
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#endif
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#ifdef __cplusplus
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#define CK_CPP_CAST(type, arg) static_cast<type>(arg)
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#else
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#define CK_CPP_CAST(type, arg) arg
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#endif
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#endif /* CK_CC_H */
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