glus_fourier.c File Reference

#include "GL/glus.h"

Functions
GLUSboolean	glusFourierDFTc (GLUScomplex *result, const GLUScomplex *vector, const GLUSint n)
	Performs a direct fourier transform on a given vector with N elements. More...
GLUSboolean	glusFourierInverseDFTc (GLUScomplex *result, const GLUScomplex *vector, const GLUSint n)
	Performs an inverse direct fourier transform on a given vector with N elements. More...
GLUSboolean	glusFourierRecursiveFFTc (GLUScomplex *result, const GLUScomplex *vector, const GLUSint n)
	Performs a fast fourier transform on a given vector with N elements, using a recursive algorithm. More...
GLUSboolean	glusFourierRecursiveInverseFFTc (GLUScomplex *result, const GLUScomplex *vector, const GLUSint n)
	Performs an inverse fast fourier transform on a given vector with N elements, using a recursive algorithm. More...
GLUSboolean	glusFourierButterflyShuffleFFTc (GLUScomplex *result, const GLUScomplex *vector, const GLUSint n)
	Shuffles a vector with N elements, that it can be used for a FFT butterfly algorithm. More...
GLUSboolean	glusFourierButterflyFFTc (GLUScomplex *result, const GLUScomplex *vector, const GLUSint n)
	Performs a fast fourier transform on a given vector with N elements, using a butterfly algorithm. More...
GLUSboolean	glusFourierButterflyInverseFFTc (GLUScomplex *result, const GLUScomplex *vector, const GLUSint n)
	Performs an inverse fast fourier transform on a given vector with N elements, using a butterfly algorithm. More...
GLUSboolean	glusFourierButterflyShuffleFFTi (GLUSint *result, const GLUSint *vector, const GLUSint n)
	Shuffles a index vector with N elements, that the indices can be used for a FFT butterfly algorithm. More...

Function Documentation

GLUSboolean glusFourierButterflyFFTc	(	GLUScomplex *	result,
		const GLUScomplex *	vector,
		const GLUSint	n
	)

Performs a fast fourier transform on a given vector with N elements, using a butterfly algorithm.

Shuffling of the elements is done in this function.

Parameters

result	The transformed vector.
vector	The source vector.
n	The number of elements.

Returns

GLUS_TRUE, if transform succeeded.

GLUSboolean glusFourierButterflyInverseFFTc	(	GLUScomplex *	result,
		const GLUScomplex *	vector,
		const GLUSint	n
	)

Performs an inverse fast fourier transform on a given vector with N elements, using a butterfly algorithm.

Shuffling of the elements is done in this function.

Parameters

result	The transformed vector.
vector	The source vector.
n	The number of elements.

Returns

GLUS_TRUE, if transform succeeded.

GLUSboolean glusFourierButterflyShuffleFFTc	(	GLUScomplex *	result,
		const GLUScomplex *	vector,
		const GLUSint	n
	)

Shuffles a vector with N elements, that it can be used for a FFT butterfly algorithm.

Parameters

result	The transformed vector.
vector	The source vector.
n	The number of elements.

Returns

GLUS_TRUE, if shuffle succeeded.

GLUSboolean glusFourierButterflyShuffleFFTi	(	GLUSint *	result,
		const GLUSint *	vector,
		const GLUSint	n
	)

Shuffles a index vector with N elements, that the indices can be used for a FFT butterfly algorithm.

Parameters

result	The transformed vector.
vector	The source vector.
n	The number of elements.

Returns

GLUS_TRUE, if shuffle succeeded.

GLUSboolean glusFourierDFTc	(	GLUScomplex *	result,
		const GLUScomplex *	vector,
		const GLUSint	n
	)

Performs a direct fourier transform on a given vector with N elements.

Parameters

result	The transformed vector.
vector	The source vector.
n	The number of elements.

Returns

GLUS_TRUE, if transform succeeded.

GLUSboolean glusFourierInverseDFTc	(	GLUScomplex *	result,
		const GLUScomplex *	vector,
		const GLUSint	n
	)

Performs an inverse direct fourier transform on a given vector with N elements.

Parameters

result	The transformed vector.
vector	The source vector.
n	The number of elements.

Returns

GLUS_TRUE, if transform succeeded.

GLUSboolean glusFourierRecursiveFFTc	(	GLUScomplex *	result,
		const GLUScomplex *	vector,
		const GLUSint	n
	)

Performs a fast fourier transform on a given vector with N elements, using a recursive algorithm.

Parameters

result	The transformed vector.
vector	The source vector.
n	The number of elements.

Returns

GLUS_TRUE, if transform succeeded.

GLUSboolean glusFourierRecursiveInverseFFTc	(	GLUScomplex *	result,
		const GLUScomplex *	vector,
		const GLUSint	n
	)

Performs an inverse fast fourier transform on a given vector with N elements, using a recursive algorithm.

Parameters

result	The transformed vector.
vector	The source vector.
n	The number of elements.

Returns

GLUS_TRUE, if transform succeeded.