mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-23 12:52:46 +00:00
120 lines
2.4 KiB
C
120 lines
2.4 KiB
C
/*
|
|
qendian.c
|
|
|
|
(description)
|
|
|
|
Copyright (C) 1996-1997 Id Software, Inc.
|
|
Copyright (C) 1999,2000 contributors of the QuakeForge project
|
|
Please see the file "AUTHORS" for a list of contributors
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; either version 2
|
|
of the License, or (at your option) any later version.
|
|
|
|
This program 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 General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to:
|
|
|
|
Free Software Foundation, Inc.
|
|
59 Temple Place - Suite 330
|
|
Boston, MA 02111-1307, USA
|
|
|
|
$Id$
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
#include <ctype.h>
|
|
|
|
#include "QF/qendian.h"
|
|
#include "QF/qtypes.h"
|
|
#include "QF/vfile.h"
|
|
|
|
/*
|
|
BYTE ORDER FUNCTIONS
|
|
*/
|
|
|
|
#ifndef WORDS_BIGENDIAN
|
|
qboolean bigendien = false;;
|
|
short (*BigShort) (short l) = ShortSwap;
|
|
short (*LittleShort) (short l) = ShortNoSwap;
|
|
int (*BigLong) (int l) = LongSwap;
|
|
int (*LittleLong) (int l) = LongNoSwap;
|
|
float (*BigFloat) (float l) = FloatSwap;
|
|
float (*LittleFloat) (float l) = FloatNoSwap;
|
|
#else
|
|
qboolean bigendien = true;;
|
|
short (*BigShort) (short l) = ShortNoSwap;
|
|
short (*LittleShort) (short l) = ShortSwap;
|
|
int (*BigLong) (int l) = LongNoSwap;
|
|
int (*LittleLong) (int l) = LongSwap;
|
|
float (*BigFloat) (float l) = FloatNoSwap;
|
|
float (*LittleFloat) (float l) = FloatSwap;
|
|
#endif
|
|
|
|
|
|
short
|
|
ShortSwap (short l)
|
|
{
|
|
byte b1, b2;
|
|
|
|
b1 = l & 255;
|
|
b2 = (l >> 8) & 255;
|
|
|
|
return (b1 << 8) + b2;
|
|
}
|
|
|
|
short
|
|
ShortNoSwap (short l)
|
|
{
|
|
return l;
|
|
}
|
|
|
|
int
|
|
LongSwap (int l)
|
|
{
|
|
byte b1, b2, b3, b4;
|
|
|
|
b1 = l & 255;
|
|
b2 = (l >> 8) & 255;
|
|
b3 = (l >> 16) & 255;
|
|
b4 = (l >> 24) & 255;
|
|
|
|
return ((int) b1 << 24) + ((int) b2 << 16) + ((int) b3 << 8) + b4;
|
|
}
|
|
|
|
int
|
|
LongNoSwap (int l)
|
|
{
|
|
return l;
|
|
}
|
|
|
|
float
|
|
FloatSwap (float f)
|
|
{
|
|
union {
|
|
float f;
|
|
byte b[4];
|
|
} dat1 , dat2;
|
|
|
|
dat1.f = f;
|
|
dat2.b[0] = dat1.b[3];
|
|
dat2.b[1] = dat1.b[2];
|
|
dat2.b[2] = dat1.b[1];
|
|
dat2.b[3] = dat1.b[0];
|
|
return dat2.f;
|
|
}
|
|
|
|
float
|
|
FloatNoSwap (float f)
|
|
{
|
|
return f;
|
|
}
|