AIFixedMath.h File Reference

#include "AITypes.h"
#include "AIHeaderBegin.h"
#include "AIHeaderEnd.h"

Go to the source code of this file.

Classes
struct	AIFixedMathSuite
	Use these functions to work with fixed-point numbers. More...
Defines
#define	kAIFixedMathSuite   "AI Fixed Math Suite"
#define	kAIFixedMathSuiteVersion   AIAPI_VERSION(4)
#define	kAIFixedMathVersion   kAIFixedMathSuiteVersion
#define	kFixedMin   ((AIFixed) 0x80000000)
#define	kFixedMax   ((AIFixed) 0x7FFFFFFF)
#define	kFixedUnknown   ((AIFixed) 0x80000000)
#define	kFixedOne   ((AIFixed) 0x00010000)
#define	kFixedZero   ((AIFixed) 0x00000000)
#define	kFixedHundredth   ((AIFixed) 0x0000028F)
#define	kFixedSixteenth   ((AIFixed) 0x00001000)
#define	kFixedTenth   ((AIFixed) 0x00001999)
#define	kFixedEighth   ((AIFixed) 0x00002000)
#define	kFixedQuarter   ((AIFixed) 0x00004000)
#define	kFixedHalf   ((AIFixed) 0x00008000)
#define	kFixedSevenEighths   ((AIFixed) 0x0000E000)
#define	kFixedOne1   ((AIFixed) 0x0000FFFF)
#define	kFixedOneThird   ((AIFixed) 0x00005555)
#define	kFixedFourThirds   ((AIFixed) 0x00015555)
#define	kFixedThreeHalves   ((AIFixed) 0x00018000)
#define	kFixedPi4   ((AIFixed) 0x0000C910)
#define	kFixedPi2   ((AIFixed) 0x00019220)
#define	kFixedPi   ((AIFixed) 0x00032440)
#define	kFixedTwoPi   ((AIFixed) 0x00064880)
#define	kFixedGolden   ((AIFixed) 0x00019E37)
#define	kFractZero   ((AIFract) 0x00000000)
#define	kFractFixedRound   ((AIFract) 0x00002000)
#define	kFractPi180   ((AIFract) 0x011DF4A0)
#define	kFractQuarter   ((AIFract) 0x10000000)
#define	kFractHalf   ((AIFract) 0x20000000)
#define	kFractOne   ((AIFract) 0x40000000)
#define	kFractFourThirds   ((AIFract) 0x55555555)
#define	kFractSqrtTwo   ((AIFract) 0x5A82799A)
#define	kFractUnknown   ((AIFract) 0x80000000)
#define	_FixedToFract(a)   ((AIFract)(a) << 14)
#define	_FractRoundToFixed(a)   ((AIFixed) (((a) + kFractFixedRound) >> 14))
#define	_FractTruncToFixed(a)   ((AIFixed) ((a) >> 14))
#define	_ShortToFixed(a)   ((AIFixed)(a) << 16)
#define	_FixedRoundToShort(a)   ((ai::int16) (((a) + kFixedHalf) >> 16))
#define	_FixedTruncToShort(a)   ((ai::int16) ((a) >> 16))
#define	_FloatToFixed(a)   ((AIFixed)((a) * 65536.0))
#define	_FixedFloor(a)   ((AIFixed) ((a) & 0xFFFF0000L))
#define	_FixedCeiling(a)   _FixedFloor((a) + kFixedOne1)
#define	_FixedRound(a)   _FixedFloor((a) + kFixedHalf)
#define	_FixedFraction(a)   ((a) & 0x0000FFFFL)
#define	_FixedAverage(a, b)   (((a) + (b) + 1) >> 1)
#define	_FixedHalf(a)   (((a) + 1) >> 1)
#define	_FixedOverflow(a)   ((a) == kFixedMax || (a) == kFixedMin)

---

Detailed Description

---

Define Documentation

#define _FixedAverage	(	a,
		b		)	(((a) + (b) + 1) >> 1)

#define _FixedCeiling

(

a

)

_FixedFloor((a) + kFixedOne1)

#define _FixedFloor

(

a

)

((AIFixed) ((a) & 0xFFFF0000L))

#define _FixedFraction

(

a

)

((a) & 0x0000FFFFL)

#define _FixedHalf

(

a

)

(((a) + 1) >> 1)

#define _FixedOverflow

(

a

)

((a) == kFixedMax || (a) == kFixedMin)

#define _FixedRound

(

a

)

_FixedFloor((a) + kFixedHalf)

#define _FixedRoundToShort

(

a

)

((ai::int16) (((a) + kFixedHalf) >> 16))

#define _FixedToFract

(

a

)

((AIFract)(a) << 14)

#define _FixedTruncToShort

(

a

)

((ai::int16) ((a) >> 16))

#define _FloatToFixed

(

a

)

((AIFixed)((a) * 65536.0))

#define _FractRoundToFixed

(

a

)

((AIFixed) (((a) + kFractFixedRound) >> 14))

#define _FractTruncToFixed

(

a

)

((AIFixed) ((a) >> 14))

#define _ShortToFixed

(

a

)

((AIFixed)(a) << 16)

#define kAIFixedMathSuite   "AI Fixed Math Suite"

#define kAIFixedMathSuiteVersion   AIAPI_VERSION(4)

#define kAIFixedMathVersion   kAIFixedMathSuiteVersion

#define kFixedEighth   ((AIFixed) 0x00002000)

#define kFixedFourThirds   ((AIFixed) 0x00015555)

#define kFixedGolden   ((AIFixed) 0x00019E37)

#define kFixedHalf   ((AIFixed) 0x00008000)

#define kFixedHundredth   ((AIFixed) 0x0000028F)

#define kFixedMax   ((AIFixed) 0x7FFFFFFF)

#define kFixedMin   ((AIFixed) 0x80000000)

#define kFixedOne   ((AIFixed) 0x00010000)

#define kFixedOne1   ((AIFixed) 0x0000FFFF)

#define kFixedOneThird   ((AIFixed) 0x00005555)

#define kFixedPi   ((AIFixed) 0x00032440)

#define kFixedPi2   ((AIFixed) 0x00019220)

#define kFixedPi4   ((AIFixed) 0x0000C910)

#define kFixedQuarter   ((AIFixed) 0x00004000)

#define kFixedSevenEighths   ((AIFixed) 0x0000E000)

#define kFixedSixteenth   ((AIFixed) 0x00001000)

#define kFixedTenth   ((AIFixed) 0x00001999)

#define kFixedThreeHalves   ((AIFixed) 0x00018000)

#define kFixedTwoPi   ((AIFixed) 0x00064880)

#define kFixedUnknown   ((AIFixed) 0x80000000)

#define kFixedZero   ((AIFixed) 0x00000000)

#define kFractFixedRound   ((AIFract) 0x00002000)

#define kFractFourThirds   ((AIFract) 0x55555555)

#define kFractHalf   ((AIFract) 0x20000000)

#define kFractOne   ((AIFract) 0x40000000)

#define kFractPi180   ((AIFract) 0x011DF4A0)

#define kFractQuarter   ((AIFract) 0x10000000)

#define kFractSqrtTwo   ((AIFract) 0x5A82799A)

#define kFractUnknown   ((AIFract) 0x80000000)

#define kFractZero   ((AIFract) 0x00000000)