myfft.h

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#pragma once
 
#include "myarr.h"
 
#include <fftw3.h>
fftw_complex* makeFilter(size_t evalue, size_t ArrayLength);
 
size_t fftfit(struct myarr input,
              int* total,
              const int* base,
              double* corvalue,
              fftw_complex* filterFFT,
              int verb,
              double* subpos);
 
fftw_complex* convolute(struct myarr array, fftw_complex* filter);
 
size_t getmaxfftw(fftw_complex* array, size_t ArrayLength);
 
fftw_complex* crosscor(size_t ArrayLength,
                       fftw_complex* array,
                       fftw_complex* ref);
 
void writefftw(fftw_complex* arr, size_t ArrayLength, const char* file);
 
void remove50hz(size_t ArrayLength, int* array, unsigned int rate);
 
void normalise(size_t ArrayLength, fftw_complex* inData);
 
void rescale(int* total, size_t ArrayLength);
 
int getshift(struct myarr xarr, struct myarr yarr);