cryb-to/include/cryb/bitwise.h
2016-10-03 12:31:16 +02:00

59 lines
2 KiB
C

/*-
* Copyright (c) 2012 The University of Oslo
* Copyright (c) 2012 Dag-Erling Smørgrav
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef CRYB_BITWISE_H_INCLUDED
#define CRYB_BITWISE_H_INCLUDED
#ifndef CRYB_TO
#include <cryb/to.h>
#endif
CRYB_BEGIN
#define CRYB_ROL_ROR(N) \
static inline uint##N##_t rol##N(uint##N##_t i, int n) \
{ \
return (i << n | i >> (N - n)); \
} \
static inline uint##N##_t ror##N(uint##N##_t i, int n) \
{ \
return (i << (N - n) | i >> n); \
}
CRYB_ROL_ROR(8);
CRYB_ROL_ROR(16);
CRYB_ROL_ROR(32);
CRYB_ROL_ROR(64);
#undef CRYB_ROL_ROR
CRYB_END
#endif