math_table.h File Reference

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Variables
const u16	gMath_SinQuarter [256]
	A quarter-wave sine table, scaled by 65536.
const u16	gMath_TwoPiSteps [8]
	floor(i * 2π)
const s32	gMath_QuadrantSin [4]
	The sine at 0, 90, 180 and 270 degrees, in Q16.
const u16	gMath_TanTable [258]
	Tangents scaled by 256: index i is tan(i * 45 / 128 degrees), so index 128 is tan(45 degrees).

Variable Documentation

gMath_SinQuarter

const u16 gMath_SinQuarter[256]

extern

A quarter-wave sine table, scaled by 65536.

Definition at line 7 of file math_table.c.

gMath_TwoPiSteps

const u16 gMath_TwoPiSteps[8]

extern

floor(i * 2π)

Definition at line 43 of file math_table.c.

gMath_QuadrantSin

const s32 gMath_QuadrantSin[4]

extern

The sine at 0, 90, 180 and 270 degrees, in Q16.

Definition at line 48 of file math_table.c.

gMath_TanTable

const u16 gMath_TanTable[258]

extern

Tangents scaled by 256: index i is tan(i * 45 / 128 degrees), so index 128 is tan(45 degrees).

ArcTan2 starts its binary search at index 127.

Definition at line 55 of file math_table.c.

Referenced by ArcTan2().