100 lines
2.7 KiB
C
100 lines
2.7 KiB
C
/*
|
|
qendian.h
|
|
|
|
(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
|
|
|
|
$Id$
|
|
*/
|
|
|
|
#ifndef __qendian_h
|
|
#define __qendian_h
|
|
|
|
/** \defgroup qendian Endian handling functions
|
|
\ingroup utils
|
|
*/
|
|
//@{
|
|
|
|
#include "QF/qtypes.h"
|
|
|
|
#ifndef NULL
|
|
# define NULL ((void *)0)
|
|
#endif
|
|
|
|
#define Q_MAXCHAR ((char)0x7f)
|
|
#define Q_MAXSHORT ((short)0x7fff)
|
|
#define Q_MAXINT ((int)0x7fffffff)
|
|
#define Q_MAXLONG ((int)0x7fffffff)
|
|
#define Q_MAXFLOAT 3.40282346638528859811704183484516925440e38
|
|
|
|
#define Q_MINCHAR ((char)0x80)
|
|
#define Q_MINSHORT ((short)0x8000)
|
|
#define Q_MININT ((int)0x80000000)
|
|
#define Q_MINLONG ((int)0x80000000)
|
|
#define Q_MINFLOAT -3.40282346638528859811704183484516925440e38
|
|
|
|
#define Q_FLOAT_EPSILON 1.1754943508222875079687365372222456778186655567720875215087517062784172594547271728515625e-38
|
|
|
|
//============================================================================
|
|
|
|
#ifndef WORDS_BIGENDIAN
|
|
#define BigShort ShortSwap
|
|
#define LittleShort ShortNoSwap
|
|
#define BigLong LongSwap
|
|
#define LittleLong LongNoSwap
|
|
#define BigFloat FloatSwap
|
|
#define LittleFloat FloatNoSwap
|
|
#else
|
|
#define BigShort ShortNoSwap
|
|
#define LittleShort ShortSwap
|
|
#define BigLong LongNoSwap
|
|
#define LittleLong LongSwap
|
|
#define BigFloat FloatNoSwap
|
|
#define LittleFloat FloatSwap
|
|
#endif
|
|
|
|
extern qboolean bigendien;
|
|
|
|
short ShortSwap (short l);
|
|
short ShortNoSwap (short l);
|
|
int LongSwap (int l);
|
|
int LongNoSwap (int l);
|
|
float FloatSwap (float f);
|
|
float FloatNoSwap (float f);
|
|
|
|
// NOTE: these /always/ read and write /little/ endian entities.
|
|
struct QFile_s;
|
|
void WriteFloat (struct QFile_s *file, float f);
|
|
void WriteByte (struct QFile_s *file, int b);
|
|
void WriteShort (struct QFile_s *file, unsigned int s);
|
|
void WriteLong (struct QFile_s *file, unsigned int l);
|
|
float ReadFloat (struct QFile_s *file);
|
|
byte ReadByte (struct QFile_s *file);
|
|
unsigned short ReadShort (struct QFile_s *file);
|
|
unsigned int ReadLong (struct QFile_s *file);
|
|
|
|
//@}
|
|
|
|
#endif // __qendian_h
|