petsc-master 2020-02-23
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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

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 MATSEQCUFFT

Output Parameter

A -the matrix

Options Database Keys

-mat_fft_type -set FFT type fft or seqcufft

Note: this serves as a base class for all FFT marix classes, currently MATFFTW or MATSEQCUFFT

Level

intermediate

Location

src/mat/impls/fft/fft.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages