#include "petscmat.h" #include "petscvec.h" PetscErrorCode VecScatterPetscToFFTW(Mat A,Vec x,Vec y)Collective on Mat Many br
A | - FFTW matrix Many br | |
x | - the PETSc vector Many br |
Many br
Note: For real parallel FFT, FFTW requires insertion of extra space at the end of last dimension. This required even when Many brone is not doing in-place transform. The last dimension size must be changed to 2*(dim[last]/2+1) to accommodate these extra Many brzeros. This routine does that job by scattering operation. Many br
Level:intermediate
Location:src/mat/impls/fft/fftw/fftw.c
Index of all Mat routines
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Index of all manual pages