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/* $OpenBSD: swab.c,v 1.9 2014/12/11 23:05:38 tedu Exp $ */
/*
* Copyright (c) 2014 Ted Unangst <tedu@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <unistd.h>
void
swab(const void *__restrict from, void *__restrict to, ssize_t len)
{
const unsigned char *src = from;
unsigned char *dst = to;
unsigned char t0, t1;
while (len > 1) {
t0 = src[0];
t1 = src[1];
dst[0] = t1;
dst[1] = t0;
src += 2;
dst += 2;
len -= 2;
}
}
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