回复： Re: some problems in using PETSC with FFTW3 package

[jiaxun hou]

Hong Zhang,
  Thanks for your respones.
   
    In FFTW3, complex type is set by double[2], and it is very easy to handle.
  But in Petsc, I don't konw exactly how the complex type be set. And when I want to do the fast fourier transform on a Petsc's complex vector by using FFTW3, I get the trouble of the translation between Petsc and FFTW3.
   
  Regards,
  Mason

Hong Zhang <hzhang at mcs.anl.gov> 写道：
  
Manson,

We don't have support for FFTW3 yet(we are currently developing
an interface between petsc and FFTW3). How do you use FFTW3 in PETSC?

To build petsc with complex, you need configure petsc with
'--with-scalar-type=complex'

Hong

On Wed, 2 Aug 2006, jiaxun hou wrote:

> Hi all,
> I am trying to using the package FFTW3 in PETSC.
> How can I change type from PetscScalar to complex or double[2]?
> The documentation seems a bit sketchy.
>
> Regards
> Mason
>
>
>
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