petsc-3.14.6 2021-03-30
MatInterpolateAdd
w = y + A*x or A'*x depending on the shape of the matrix
Synopsis
#include "petscmat.h"
PetscErrorCode MatInterpolateAdd(Mat A,Vec x,Vec y,Vec w)
Neighbor-wise Collective on Mat
Input Parameters
| mat | - the matrix
|
| x,y | - the vectors
|
| w | - where the result is stored
|
Notes
w may be the same vector as y.
This allows one to use either the restriction or interpolation (its transpose)
matrix to do the interpolation
See Also
MatMultAdd(), MatMultTransposeAdd(), MatRestrict()
Level
intermediate
Location
src/mat/interface/matrix.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages