petsc-3.14.6 2021-03-30
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VecScatterFFTWToPetsc

 Converts FFTW output to the PETSc vector.

Synopsis

#include "petscmat.h" 
#include "petscvec.h"   
PetscErrorCode VecScatterFFTWToPetsc(Mat A,Vec x,Vec y)
Collective on Mat

Input Parameters

A - FFTW matrix
x - FFTW vector

Output Parameters

y - PETSc vector

Note: While doing real transform the FFTW output of backward DFT contains extra zeros at the end of last dimension. VecScatterFFTWToPetsc removes those extra zeros.

See Also

VecScatterPetscToFFTW()

Level

intermediate

Location

src/mat/impls/fft/fftw/fftw.c

Implementations

VecScatterFFTWToPetsc_FFTW in src/mat/impls/fft/fftw/fftw.c

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