30 lines
1005 B
C
30 lines
1005 B
C
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/*******************/
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/*** Fixed Stupg ***/
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/*******************/
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#ifndef __DAVES_FIXED__
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#define __DAVES_FIXED__
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#include "system/global.h"
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/*****************************************************************************/
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typedef s32 Fixed;
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/*****************************************************************************/
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#define FixedShift 16
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#define FixedMultFactor (1<<FixedShift)
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#define FixedIntMask (0xffffffff<<FixedShift)
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#define FixedFractMask ((0xffffffff-FixedIntMask)/* | 0x80000000*/) // save sign bit
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#define FixedInt(Fixed) (Fixed & FixedIntMask)
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#define FixedFract(Fixed) (Fixed & FixedFractMask)
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#define Fixed2NumQ(Fixed) (*((s16*)&Fixed+1))
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#define Num2Fixed(Num) ((s32)Num*FixedMultFactor)
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#define Fixed2Num(Fixed) ((s16)(Fixed>>FixedShift))
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#define FixedMult(a,b) ((a*b)>>FixedShift)
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#define FixedMult2(a,b) ((a>>(FixedShift/2))*(b>>(FixedShift/2)))
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/*****************************************************************************/
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#endif
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