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/*
Audio File Library
Copyright (C) 1998, Michael Pruett <michael@68k.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307 USA.
*/
/*
byteorder.c
This file defines functions which swap bytes.
*/
#include <sys/types.h>
#include "byteorder.h"
#include "util.h"
u_int16_t _af_byteswap_int16 (u_int16_t x)
{
return ((x << 8) | (x >> 8));
}
u_int32_t _af_byteswap_int32 (u_int32_t x)
{
u_int8_t b1, b2, b3, b4;
b1 = x>>24;
b2 = (x>>16) & 0xff;
b3 = (x>>8) & 0xff;
b4 = x & 0xff;
return b1 | (b2 << 8) | (b3 << 16) | (b4 << 24);
}
float _af_byteswap_float32 (float x)
{
float f = x;
u_int32_t *l = (u_int32_t *) &f;
*l = _af_byteswap_int32(*l);
return f;
}
/*
uint64_t _af_byteswap_int64 (uint64_t x)
{
u_int8_t b1, b2, b3, b4, b5, b6, b7, b8;
b1 = (x>>56) & 0xff;
b2 = (x>>48) & 0xff;
b3 = (x>>40) & 0xff;
b4 = (x>>32) & 0xff;
b5 = (x>>24) & 0xff;
b6 = (x>>16) & 0xff;
b7 = (x>>8) & 0xff;
b8 = x & 0xff;
return b1 | (b2 << 8) | (b3 << 16) | (b4 << 24) |
(b5 << 32) | (b6 << 40) | (b7 << 48) | (b8 << 56);
}
main ()
{
long ldata = '1234';
unsigned long long data = 0x1122334455667788;
printf("%llx\n", data);
printf("%llx\n", _af_byteswap_int64(data));
printf("%x\n", ldata);
printf("%x\n", _af_byteswap_int32(ldata));
}
*/
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