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/*
* Copyright (C) 2007-2020 S[&]T, The Netherlands.
* 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. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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 CODA_SWAP8_H
#define CODA_SWAP8_H
static void swap8(void *value)
{
unsigned char *v = (unsigned char *)value;
/* use XOR swap algorithm to swap bytes 0/7, 1/6, 2/5, and 3/4 */
v[0] = v[0] ^ v[7];
v[7] = v[0] ^ v[7];
v[0] = v[0] ^ v[7];
v[1] = v[1] ^ v[6];
v[6] = v[1] ^ v[6];
v[1] = v[1] ^ v[6];
v[2] = v[2] ^ v[5];
v[5] = v[2] ^ v[5];
v[2] = v[2] ^ v[5];
v[3] = v[3] ^ v[4];
v[4] = v[3] ^ v[4];
v[3] = v[3] ^ v[4];
}
#define swap_int64 swap8
#define swap_uint64 swap8
#define swap_double swap8
#endif
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