NAME

rvfft - real vector fft


SYNOPSIS

     void rvfft (x,lx,nx,isign,scale,mode)


PARAMETERS

x -complex
       input/output array
lx -int
       length of real vectors
nx -int
       number of vectors; must be a power of 2
isign -int
       sign of sqrt(-1)
scale -double
       scale factor; sqrt(2./lx) conserves energy
mode -int
       1 for nx real to nx/2 complex
       2 for nx real to nx/2+1 complex
       -1 for nx/2 complex to nx real
       -2 for nx/2+1 complex to nx real


DESCRIPTION

     Real fast Fourier transform between vectors of an array.  
     Rvfft takes a 2D panel and does a real to complex or 
     viceversa fast fourier transform across the second dimension, 
     of all the time samples. The arguments are as follows:


SEE ALSO

the refft manpage,the rvfft manpage,the cvfft manpage


LIBRARY

sepfft