MatInterpolateAdd#

\(w = y + A*x\) or \(A^T*x\) depending on the shape of the matrix

Synopsis#

#include "petscmat.h" 
PetscErrorCode MatInterpolateAdd(Mat A, Vec x, Vec y, Vec w)

Neighbor-wise Collective

Input Parameters#

  • A - the matrix

  • x - the vector to be multiplied by the interpolation operator

  • y - the vector to be added to the result

Output Parameter#

  • w - the resulting vector

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#

Matrices, Mat, MatMultAdd(), MatMultTransposeAdd(), MatRestrict(), PCMG

Level#

intermediate

Location#

src/mat/interface/matrix.c

Index of all Mat routines
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Index of all manual pages