petsc-3.7.5 2017-01-01
MatCreateFFT
Creates a matrix object that provides FFT via an external package
Synopsis
#include "petscmat.h"
PetscErrorCode MatCreateFFT(MPI_Comm comm,PetscInt ndim,const PetscInt dim[],MatType mattype,Mat *A)
Collective on MPI_Comm
Input Parameter
| comm | - MPI communicator
|
| ndim | - the ndim-dimensional transform
|
| dim | - array of size ndim, dim[i] contains the vector length in the i-dimension
|
| type | - package type, e.g., FFTW or FFTCU
|
Output Parameter
A -the matrix
Options Database Keys