dgt.h

linear time－frequency toolbox

#ifndef DGT_H
#define DGT_H 1

#include <common.h>

#include "fftw3.h"

BEGIN_C_DECLS
extern int gcd (const int a, const int b, int *r, int *s );

extern void wfac(fftw_complex *g, const int L, const int R,
	  const int a, const int M, fftw_complex *gf);

extern void iwfac(fftw_complex *gf, const int L, const int R,
	   const int a, const int M, fftw_complex *g);

extern void dgt_fw(fftw_complex *f, fftw_complex *gf, const int L, const int W,
		   const int R, const int a, const int M, fftw_complex *cout);

extern void idgt_fw(fftw_complex *c, fftw_complex *gf, const int L,
		    const int W,const int R,const int a, const int M,
		    fftw_complex *f);

END_C_DECLS

#endif /* !DGT_H */