fft_interface Module Reference

Module for performing FFT. More...

Data Types
type	int_para
interface	four1d
interface	fourcol

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_interface::four1d_ca ( complex(kind=r8), dimension(:), intent(inout) vec_ca, integer, intent(in) isign )

private

fourcol_ca()

subroutine fft_interface::fourcol_ca ( complex(kind=r8), dimension(:,:), intent(inout) arr_ca, integer, intent(in) isign )

private

fourcol_caa()

subroutine fft_interface::fourcol_caa ( complex(kind=r8), dimension(:,:,:), intent(inout) arr_caa, integer, intent(in) isign )

private

Variable Documentation

fft_backward

integer, parameter fft_interface::fft_backward =1

private

fft_forward

integer, parameter fft_interface::fft_forward =-1

private

i8

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

maxplan

integer, parameter fft_interface::maxplan =16

private

maxsubs1

integer, parameter fft_interface::maxsubs1 =8

private

maxsubs2

integer, parameter fft_interface::maxsubs2 =1

private

n1d_par

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

private

n1d_saved

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

private

plan1d

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

private