Common::CosineTable Class Reference

Public Member Functions
	CosineTable (int nPoints)
const float *	getTable ()
float	at (int index) const
float	atLegacy (int index) const

Constructor & Destructor Documentation

CosineTable()

Common::CosineTable::CosineTable

(

int

nPoints

)

Construct a cosine table given the number of points.

Parameters

nPoints

Number of distinct radian points that must be in range [16,65536] and be divisible by 4.

Member Function Documentation

getTable()

const float* Common::CosineTable::getTable ( )

inline

Get a pointer to a table.

This table contains nPoints/2 entries. Prefer to use at() The layout of this table is as follows:

• Entries 0 up to (including) nPoints/4: cos(0) till (including) cos(1/2*pi)
• Entries (excluding) nPoints/4 up to nPoints/2: (excluding) cos(3/2*pi) till (excluding) cos(2*pi)

at()

float Common::CosineTable::at

(

int

index

)

const

Return cos(2*pi * index / nPoints ) Index must be in range [0, nPoints - 1] Faster than atLegacy.

atLegacy()

float Common::CosineTable::atLegacy

(

int

index

)

const

Returns cos(2*pi * index / nPoints ) Index must be in range [0, nPoints - 1]

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The documentation for this class was generated from the following file:

• common/cosinetables.h