mirror of
https://git.code.sf.net/p/quake/quakeforge
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120 lines
2.4 KiB
C
120 lines
2.4 KiB
C
/*
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qendian.c
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(description)
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Copyright (C) 1996-1997 Id Software, Inc.
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Copyright (C) 1999,2000 contributors of the QuakeForge project
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Please see the file "AUTHORS" for a list of contributors
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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$Id$
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <ctype.h>
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#include "QF/qendian.h"
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#include "QF/qtypes.h"
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#include "QF/vfile.h"
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/*
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BYTE ORDER FUNCTIONS
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*/
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#ifndef WORDS_BIGENDIAN
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qboolean bigendien = false;;
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short (*BigShort) (short l) = ShortSwap;
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short (*LittleShort) (short l) = ShortNoSwap;
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int (*BigLong) (int l) = LongSwap;
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int (*LittleLong) (int l) = LongNoSwap;
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float (*BigFloat) (float l) = FloatSwap;
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float (*LittleFloat) (float l) = FloatNoSwap;
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#else
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qboolean bigendien = true;;
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short (*BigShort) (short l) = ShortNoSwap;
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short (*LittleShort) (short l) = ShortSwap;
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int (*BigLong) (int l) = LongNoSwap;
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int (*LittleLong) (int l) = LongSwap;
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float (*BigFloat) (float l) = FloatNoSwap;
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float (*LittleFloat) (float l) = FloatSwap;
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#endif
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short
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ShortSwap (short l)
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{
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byte b1, b2;
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b1 = l & 255;
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b2 = (l >> 8) & 255;
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return (b1 << 8) + b2;
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}
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short
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ShortNoSwap (short l)
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{
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return l;
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}
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int
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LongSwap (int l)
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{
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byte b1, b2, b3, b4;
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b1 = l & 255;
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b2 = (l >> 8) & 255;
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b3 = (l >> 16) & 255;
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b4 = (l >> 24) & 255;
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return ((int) b1 << 24) + ((int) b2 << 16) + ((int) b3 << 8) + b4;
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}
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int
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LongNoSwap (int l)
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{
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return l;
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}
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float
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FloatSwap (float f)
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{
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union {
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float f;
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byte b[4];
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} dat1 , dat2;
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dat1.f = f;
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dat2.b[0] = dat1.b[3];
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dat2.b[1] = dat1.b[2];
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dat2.b[2] = dat1.b[1];
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dat2.b[3] = dat1.b[0];
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return dat2.f;
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}
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float
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FloatNoSwap (float f)
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{
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return f;
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}
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