fftlib.h File Reference

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Macros
#define	c_re(c)   ((c).re)
#define	c_im(c)   ((c).im)
#define	c_add_mul(c, c1, c2)   { COMPLEX C1, C2; C1 = (c1); C2 = (c2); c_re (c) += C1.re * C2.re - C1.im * C2.im; c_im (c) += C1.re * C2.im + C1.im * C2.re; }
#define	c_conj(c)   { c_im (c) = -c_im (c); }
#define	c_realdiv(c, real)   { c_re (c) /= (real); c_im (c) /= (real); }

Functions
JRMLIBRARY_API COMPLEX	Convert2COMPLEX (jrmComplex x)
JRMLIBRARY_API jrmComplex	Convert2complex (COMPLEX x)
JRMLIBRARY_API COMPLEX	AddCOMPLEX (COMPLEX a, COMPLEX b)
JRMLIBRARY_API int	AddCOMPLEXArrays (COMPLEX *a, COMPLEX *b, COMPLEX *out, unsigned int nelements)
JRMLIBRARY_API long	W_init (unsigned n)
JRMLIBRARY_API void	Fourier (COMPLEX *in, unsigned n, COMPLEX *out)
JRMLIBRARY_API long	fft (COMPLEX *in, unsigned n, COMPLEX *out)
JRMLIBRARY_API long	fftp (COMPLEX *in, unsigned n, COMPLEX *out)
JRMLIBRARY_API long	rft (COMPLEX *in, unsigned n, COMPLEX *out)
JRMLIBRARY_API long	rftp (COMPLEX *in, unsigned n, COMPLEX *out)
JRMLIBRARY_API long	prime_factor (long n)
JRMLIBRARY_API long	next_best (long n, long lpfa)
JRMLIBRARY_API short	dft (COMPLEX *array, long npts, COMPLEX *work, long dir)
JRMLIBRARY_API int	LowPassFilter (COMPLEX *in, unsigned int nin, COMPLEX *out, double kneefreq, double attenuation)
JRMLIBRARY_API int	BandPassFilter (COMPLEX *in, unsigned int nin, COMPLEX *out, double centerfreq, double passwidth, double attenuation)
JRMLIBRARY_API int	LocalOscillator (COMPLEX *out, unsigned int nout, double freq, double amplitude)
JRMLIBRARY_API long	fft2d (COMPLEX *array, long ncols, long nrows, long dirflag, char printflag)
JRMLIBRARY_API long	xfmrows (COMPLEX *array, long ncols, long nrows, long dirflag)
JRMLIBRARY_API long	xfmcols (COMPLEX *array, long ncols, long nrows, long dirflag)

Variables
JRMLIBRARY_API COMPLEX *	W_factors
JRMLIBRARY_API unsigned	Nfactors

Macro Definition Documentation

#define c_re

(

c

)

((c).re)

#define c_im

(

c

)

((c).im)

#define c_add_mul	(		c,
			c1,
			c2
	)		{ COMPLEX C1, C2; C1 = (c1); C2 = (c2); c_re (c) += C1.re * C2.re - C1.im * C2.im; c_im (c) += C1.re * C2.im + C1.im * C2.re; }

#define c_conj

(

c

)

{ c_im (c) = -c_im (c); }

#define c_realdiv	(		c,
			real
	)		{ c_re (c) /= (real); c_im (c) /= (real); }

Function Documentation

JRMLIBRARY_API COMPLEX Convert2COMPLEX

(

jrmComplex

x

)

JRMLIBRARY_API jrmComplex Convert2complex

(

COMPLEX

x

)

JRMLIBRARY_API COMPLEX AddCOMPLEX	(	COMPLEX	a,
		COMPLEX	b
	)

JRMLIBRARY_API int AddCOMPLEXArrays	(	COMPLEX *	a,
		COMPLEX *	b,
		COMPLEX *	out,
		unsigned int	nelements
	)

JRMLIBRARY_API long W_init

(

unsigned

n

)

JRMLIBRARY_API void Fourier	(	COMPLEX *	in,
		unsigned	n,
		COMPLEX *	out
	)

JRMLIBRARY_API long fft	(	COMPLEX *	in,
		unsigned	n,
		COMPLEX *	out
	)

JRMLIBRARY_API long fftp	(	COMPLEX *	in,
		unsigned	n,
		COMPLEX *	out
	)

JRMLIBRARY_API long rft	(	COMPLEX *	in,
		unsigned	n,
		COMPLEX *	out
	)

JRMLIBRARY_API long rftp	(	COMPLEX *	in,
		unsigned	n,
		COMPLEX *	out
	)

JRMLIBRARY_API long prime_factor

(

long

n

)

JRMLIBRARY_API long next_best	(	long	n,
		long	lpfa
	)

JRMLIBRARY_API short dft	(	COMPLEX *	array,
		long	npts,
		COMPLEX *	work,
		long	dir
	)

JRMLIBRARY_API int LowPassFilter	(	COMPLEX *	in,
		unsigned int	nin,
		COMPLEX *	out,
		double	kneefreq,
		double	attenuation
	)

JRMLIBRARY_API int BandPassFilter	(	COMPLEX *	in,
		unsigned int	nin,
		COMPLEX *	out,
		double	centerfreq,
		double	passwidth,
		double	attenuation
	)

JRMLIBRARY_API int LocalOscillator	(	COMPLEX *	out,
		unsigned int	nout,
		double	freq,
		double	amplitude
	)

JRMLIBRARY_API long fft2d	(	COMPLEX *	array,
		long	ncols,
		long	nrows,
		long	dirflag,
		char	printflag
	)

JRMLIBRARY_API long xfmrows	(	COMPLEX *	array,
		long	ncols,
		long	nrows,
		long	dirflag
	)

JRMLIBRARY_API long xfmcols	(	COMPLEX *	array,
		long	ncols,
		long	nrows,
		long	dirflag
	)

Variable Documentation

JRMLIBRARY_API COMPLEX* W_factors

JRMLIBRARY_API unsigned Nfactors