go_fourier_fft ()
void
go_fourier_fft (go_complex const *in,
int n,
int skip,
go_complex **fourier,
gboolean inverse);
go_fourier_fftl ()
void
go_fourier_fftl (go_complexl const *in,
int n,
int skip,
go_complexl **fourier,
gboolean inverse);