PETSc version 3.15.5
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
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
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Index of all manual pages