MatRestrict

\(y = A*x\) or \(A^T*x\)

Synopsis

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

Neighbor-wise Collective

Input Parameters

• A - the matrix

• x - the vector to be restricted

Output Parameter

• y - the resulting vector

Note

This allows one to use either the restriction or interpolation (its transpose) matrix to do the restriction

See Also

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

Level

intermediate

Location

src/mat/interface/matrix.c

Examples

src/ts/tutorials/ex29.c

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Index of all Mat routines
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Index of all manual pages