kube-gustavson-fft.hpp File Reference

#include <cmath>

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Classes
struct	COMPLEX
struct	DCOMPLEX
Defines
#define	ERROR   -1
#define	NO_ERROR   0
#define	FFT_FORWARD   0
#define	FFT_INVERSE   1
#define	PI   3.1415926535897932
#define	TWOPI   6.2831853071795865
#define	HALFPI   1.5707963267948966
#define	PI8   0.392699081698724
#define	RT2   1.4142135623731
#define	IRT2   0.707106781186548
Functions
COMPLEX	operator* (const COMPLEX &c, float mult)
COMPLEX	operator* (float mult, const COMPLEX &c)
COMPLEX	operator* (const COMPLEX &a, const COMPLEX &b)
COMPLEX &	operator*= (COMPLEX &c, float mult)
float	abs (const COMPLEX &c)
float	norm (const COMPLEX &c)
int	forward_fft2f (COMPLEX *array, int rows, int cols)
int	inverse_fft2f (COMPLEX *array, int rows, int cols)
int	forward_fft2d (DCOMPLEX *array, int rows, int cols)
int	inverse_fft2d (DCOMPLEX *array, int rows, int cols)

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Define Documentation

#define ERROR   -1

Definition at line 114 of file kube-gustavson-fft.hpp.

Referenced by allocateBuffer(), fft2d(), and fft2f().

#define FFT_FORWARD   0

Definition at line 118 of file kube-gustavson-fft.hpp.

Referenced by FFT842(), forward_fft2d(), and forward_fft2f().

#define FFT_INVERSE   1

Definition at line 119 of file kube-gustavson-fft.hpp.

Referenced by FFT842(), inverse_fft2d(), and inverse_fft2f().

#define HALFPI   1.5707963267948966

Definition at line 123 of file kube-gustavson-fft.hpp.

#define IRT2   0.707106781186548

Definition at line 126 of file kube-gustavson-fft.hpp.

Referenced by R8TX().

#define NO_ERROR   0

Definition at line 115 of file kube-gustavson-fft.hpp.

Referenced by allocateBuffer(), fft2d(), and fft2f().

#define PI   3.1415926535897932

Definition at line 121 of file kube-gustavson-fft.hpp.

#define PI8   0.392699081698724

Definition at line 124 of file kube-gustavson-fft.hpp.

#define RT2   1.4142135623731

Definition at line 125 of file kube-gustavson-fft.hpp.

#define TWOPI   6.2831853071795865

Definition at line 122 of file kube-gustavson-fft.hpp.

Referenced by R8TX().

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Function Documentation

float abs

(

const COMPLEX &

c

)

[inline]

Definition at line 102 of file kube-gustavson-fft.hpp.

References COMPLEX::im, and COMPLEX::re.

Referenced by Voronoischnitt::compute_schnitt(), eichkurve::fsolve(), and line_iterate().

int forward_fft2d	(	DCOMPLEX *	array,
		int	rows,
		int	cols
	)

Perform forward 2D transform on a DCOMPLEX array.

Definition at line 597 of file kube-gustavson-fft.cpp.

References fft2d(), and FFT_FORWARD.

int forward_fft2f	(	COMPLEX *	array,
		int	rows,
		int	cols
	)

Perform forward 2D transform on a COMPLEX array.

Definition at line 585 of file kube-gustavson-fft.cpp.

References fft2f(), and FFT_FORWARD.

Referenced by bildcomplex::FFT_forward().

int inverse_fft2d	(	DCOMPLEX *	array,
		int	rows,
		int	cols
	)

Perform inverse 2D transform on a DCOMPLEX array.

Definition at line 603 of file kube-gustavson-fft.cpp.

References fft2d(), and FFT_INVERSE.

int inverse_fft2f	(	COMPLEX *	array,
		int	rows,
		int	cols
	)

Perform inverse 2D transform on a COMPLEX array.

Definition at line 591 of file kube-gustavson-fft.cpp.

References fft2f(), and FFT_INVERSE.

Referenced by bildcomplex::FFT_backward().

float norm

(

const COMPLEX &

c

)

[inline]

Definition at line 106 of file kube-gustavson-fft.hpp.

References COMPLEX::im, and COMPLEX::re.

Referenced by bildfloat::convolve().

COMPLEX operator*	(	const COMPLEX &	a,
		const COMPLEX &	b
	)			[inline]

Definition at line 88 of file kube-gustavson-fft.hpp.

References COMPLEX::im, and COMPLEX::re.

COMPLEX operator*	(	float	mult,
		const COMPLEX &	c
	)			[inline]

Definition at line 80 of file kube-gustavson-fft.hpp.

References COMPLEX::im, and COMPLEX::re.

COMPLEX operator*	(	const COMPLEX &	c,
		float	mult
	)			[inline]

Definition at line 73 of file kube-gustavson-fft.hpp.

References COMPLEX::im, and COMPLEX::re.

COMPLEX& operator*=	(	COMPLEX &	c,
		float	mult
	)			[inline]

Definition at line 96 of file kube-gustavson-fft.hpp.

References COMPLEX::im, and COMPLEX::re.