MatCreateSeqFFTW

 Creates a matrix object that provides sequential FFT via the external package FFTW

Synopsis

#include "petscvec.h" 
PetscErrorCode PETSCMAT_DLLEXPORT MatCreateSeqFFTW(MPI_Comm comm,PetscInt ndim,const PetscInt dim[],Mat* A)
Collective on MPI_Comm

Input Parameter

comm - MPI communicator, set to PETSC_COMM_SELF
ndim - the ndim-dimensional transform
dim - array of size ndim, dim[i] contains the vector length in the i-dimension

Output Parameter

A -the matrix

Options Database Keys

Level:intermediate
Location:src/mat/impls/fftw/fftw.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages

-mat_fftw_plannerflags - set FFTW planner flags