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linogram_fft_test
[Polar FFT]


Functions

int linogram_grid (int T, int R, double *x, double *w)
 Generates the points x with weights w for the linogram grid with T slopes and R offsets.
int linogram_dft (fftw_complex *f_hat, int NN, fftw_complex *f, int T, int R, int m)
 discrete pseudo-polar FFT
int linogram_fft (fftw_complex *f_hat, int NN, fftw_complex *f, int T, int R, int m)
 NFFT-based pseudo-polar FFT.
int inverse_linogram_fft (fftw_complex *f, int T, int R, fftw_complex *f_hat, int NN, int max_i, int m)
 NFFT-based inverse pseudo-polar FFT.
int comparison_fft (FILE *fp, int N, int T, int R)
 Comparison of the FFTW, linogram FFT, and inverse linogram FFT.
int main (int argc, char **argv)
 test program for various parameters

Variables

double GLOBAL_elapsed_time

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