cvfft - Complex fft
void cvfft (x,lx,nx,isign,scale)
input/output array
length of complex vectors
number of vectors; must be a power of 2
sign of sqrt(-1)
scale factor; sqrt(1./lx) conserves energy
Complex fast Fourier transform between vectors of an array. Cvfft takes a 2D panel and does a complex fast fourier transform across the second dimension, of all the time samples. The arguments are as follows:
the refft manpage,the rvfft manpage,the cvfft manpage
sepfft