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real_fft
This routine performs a forward or backward Fast Fourier Transformation
on its argument data.
Location in HEALPix directory tree:
src/f90/mod/healpix_fft.F90
FORMAT call real_fft(
data, backward
)
ARGUMENTS
| name & dimensionality |
kind |
in/out |
description |
|---|
| |
|
|
|
|
data(:) |
XXX |
INOUT |
array containing the input and output data.
Can be of type real(sp) or real(dp) |
| backward |
LGT |
IN |
Optional argument. If present and true, perform backward transformation, else forward |
EXAMPLE:
use healpix_fft
call real_fft (data, backward=.true.)
Performs a backward FFT on data.
RELATED ROUTINESThis section lists the routines related to real_fft
-
complex_fft
- routine for FFT of complex data
Eric Hivon
2010-06-18
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