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Daveo 2000-08-29 19:54:22 +00:00
parent e9f123dec7
commit 74ac11a27f
40 changed files with 6829 additions and 0 deletions
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source/utils/fixed.h Normal file
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/*******************/
/*** Fixed Stupg ***/
/*******************/
#ifndef __DAVES_FIXED__
#define __DAVES_FIXED__
#include "system/global.h"
/*****************************************************************************/
typedef s32 Fixed;
/*****************************************************************************/
#define FixedShift 16
#define FixedMultFactor (1<<FixedShift)
#define FixedIntMask (0xffffffff<<FixedShift)
#define FixedFractMask ((0xffffffff-FixedIntMask)/* | 0x80000000*/) // save sign bit
#define FixedInt(Fixed) (Fixed & FixedIntMask)
#define FixedFract(Fixed) (Fixed & FixedFractMask)
#define Fixed2NumQ(Fixed) (*((s16*)&Fixed+1))
#define Num2Fixed(Num) ((s32)Num*FixedMultFactor)
#define Fixed2Num(Fixed) ((s16)(Fixed>>FixedShift))
#define FixedMult(a,b) ((a*b)>>FixedShift)
#define FixedMult2(a,b) ((a>>(FixedShift/2))*(b>>(FixedShift/2)))
/*****************************************************************************/
#endif