petsc-3.15.0 2021-04-05
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MatCreateSeqUSFFT

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

Synopsis

#include "petscmat.h" 
#include "petscdmda.h"  
PetscErrorCode  MatCreateSeqUSFFT(Vec sampleCoords, DMDA freqDA, Mat *A)
Collective

Input Parameter

da - geometry of the domain encoded by a DMDA

Output Parameter

A - the matrix

Options Database Keys

-mat_usfft_plannerflags - set the FFTW planner flags

Level

intermediate

Location

src/dm/impls/da/usfft/matusfft.c
Index of all DMDA routines
Table of Contents for all manual pages
Index of all manual pages