/*
 * Copyright (C) 2007-2023 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
