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Re: "Fast Fourier Transform of a Step-function in 3-dimonsional" please help me.

From: Vincent Torri <vtorri at univ-evry dot fr>
To: "fatemeh.mirjani" <f_mirjani at ph dot iut dot ac dot ir>
Cc: gcc-help at gcc dot gnu dot org
Date: Sun, 22 Jun 2008 08:31:28 +0200 (CEST)
Subject: Re: "Fast Fourier Transform of a Step-function in 3-dimonsional" please help me.
References: <17112270.88121214119485395.JavaMail.root@mta.iut.ac.ir>

Hey,

I need a subroutine of Fortran90 about "Fast Fourier Transform of a Step-function in 3-dimonsional."
I read the related subroutines in Numerical Recipes Book, but I couldn't match it for a 3D step function.
Whould you please let me to have access to a subroutine for the mentioned goal?

why don't you use fftw [1] ? It has a fortran 77 api, but i think that it can be called in a fortran 90 program.

regards

Vincent Torri

[1] http://www.fftw.org/

References:
- "Fast Fourier Transform of a Step-function in 3-dimonsional" please help me.
  - From: fatemeh.mirjani

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