fixed.h File Reference

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Macros
#define	FIXED_ONE   0x00000800
#define	FIXED_HALF   0x00000400
#define	FIXED_FRAC_MASK   0x000007FF
#define	FIXED_INT_MASK   (~FIXED_FRAC_MASK)
#define	FIXED_EPSILON   1
#define	FIXED_SCALE   2048.0f
#define	FIXED_SHIFT   11
#define	FloatToFixed(X)   ((GLfixed) ((X) * FIXED_SCALE))
#define	IntToFixed(I)   ((I) << FIXED_SHIFT)
#define	FixedToInt(X)   ((X) >> FIXED_SHIFT)
#define	FixedToUns(X)   (((unsigned int)(X)) >> 11)
#define	FixedCeil(X)   (((X) + FIXED_ONE - FIXED_EPSILON) & FIXED_INT_MASK)
#define	FixedFloor(X)   ((X) & FIXED_INT_MASK)
#define	FixedToFloat(X)   ((X) * 0.00048828125f)
#define	PosFloatToFixed(X)   FloatToFixed(X)
#define	SignedFloatToFixed(X)   FloatToFixed(X)

Typedefs
typedef int	GLfixed

Macro Definition Documentation

FIXED_EPSILON

#define FIXED_EPSILON   1

Definition at line 42 of file fixed.h.

FIXED_FRAC_MASK

#define FIXED_FRAC_MASK   0x000007FF

Definition at line 40 of file fixed.h.

FIXED_HALF

#define FIXED_HALF   0x00000400

Definition at line 39 of file fixed.h.

FIXED_INT_MASK

#define FIXED_INT_MASK   (~FIXED_FRAC_MASK)

Definition at line 41 of file fixed.h.

FIXED_ONE

#define FIXED_ONE   0x00000800

Definition at line 38 of file fixed.h.

FIXED_SCALE

#define FIXED_SCALE   2048.0f

Definition at line 43 of file fixed.h.

FIXED_SHIFT

#define FIXED_SHIFT   11

Definition at line 44 of file fixed.h.

FixedCeil

#define FixedCeil

(

X

)

(((X) + FIXED_ONE - FIXED_EPSILON) & FIXED_INT_MASK)

Definition at line 49 of file fixed.h.

FixedFloor

#define FixedFloor

(

X

)

((X) & FIXED_INT_MASK)

Definition at line 50 of file fixed.h.

FixedToFloat

#define FixedToFloat

(

X

)

((X) * 0.00048828125f)

Definition at line 52 of file fixed.h.

FixedToInt

#define FixedToInt

(

X

)

((X) >> FIXED_SHIFT)

Definition at line 47 of file fixed.h.

FixedToUns

#define FixedToUns

(

X

)

(((unsigned int)(X)) >> 11)

Definition at line 48 of file fixed.h.

FloatToFixed

#define FloatToFixed

(

X

)

((GLfixed) ((X) * FIXED_SCALE))

Definition at line 45 of file fixed.h.

IntToFixed

#define IntToFixed

(

I

)

((I) << FIXED_SHIFT)

Definition at line 46 of file fixed.h.

PosFloatToFixed

#define PosFloatToFixed

(

X

)

FloatToFixed(X)

Definition at line 53 of file fixed.h.

SignedFloatToFixed

#define SignedFloatToFixed

(

X

)

FloatToFixed(X)

Definition at line 54 of file fixed.h.

Typedef Documentation

GLfixed

typedef int GLfixed

Definition at line 36 of file fixed.h.