petsc-3.3-p7 2013-05-11

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