fft Module Reference

Module for performing FFT. More...

Data Types
interface	four1d
interface	fourcol
type	int_para

Functions/Subroutines
subroutine	four1d_ca (vec_ca, isign)
subroutine	fourcol_ca (arr_ca, isign)
subroutine	fourcol_caa (arr_caa, isign)

Variables
integer, parameter	i8 = SELECTED_INT_kind(18)
integer, parameter	fft_forward =-1
integer, parameter	fft_backward =1
integer, parameter	maxsubs1 =8
integer, parameter	maxsubs2 =1
integer, parameter	maxplan =16
integer(i8), dimension(maxplan, maxsubs1), save	plan1d
type(int_para), dimension(maxplan, maxsubs1), save	n1d_par
integer, dimension(maxsubs1), save	n1d_saved =0

Detailed Description

Module for performing FFT.

Requires FFTW3. isign=-1 gives a forward FFT, i.e. exp(-2 pi i) isign=1 gives a backward FFT, i.e. exp(2 pi i)

Function/Subroutine Documentation

four1d_ca()

subroutine fft::four1d_ca ( complex, dimension(:), intent(inout)  vec_ca, integer, intent(in)  isign  )

private

fourcol_ca()

subroutine fft::fourcol_ca ( complex, dimension(:,:), intent(inout)  arr_ca, integer, intent(in)  isign  )

private

fourcol_caa()

subroutine fft::fourcol_caa ( complex, dimension(:,:,:), intent(inout)  arr_caa, integer, intent(in)  isign  )

private

Variable Documentation

fft_backward

integer, parameter fft::fft_backward =1

private

fft_forward

integer, parameter fft::fft_forward =-1

private

i8

integer, parameter fft::i8 = SELECTED_INT_kind(18)

private

maxplan

integer, parameter fft::maxplan =16

private

maxsubs1

integer, parameter fft::maxsubs1 =8

private

maxsubs2

integer, parameter fft::maxsubs2 =1

private

n1d_par

type(int_para), dimension(maxplan,maxsubs1), save fft::n1d_par

private

n1d_saved

integer, dimension(maxsubs1), save fft::n1d_saved =0

private

plan1d

integer(i8), dimension(maxplan,maxsubs1), save fft::plan1d

private