petsc-3.12.5 2020-03-29
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MatRestrict

 y = A*x or A'*x

Synopsis

#include "petscmat.h" 
PetscErrorCode MatRestrict(Mat A,Vec x,Vec y)
Neighbor-wise Collective on Mat

Input Parameters

mat - the matrix
x,y - the vectors

Notes

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

See Also

MatMultAdd(), MatMultTransposeAdd(), MatInterpolate()

Level

intermediate

Location

src/mat/interface/matrix.c

Examples

src/snes/examples/tutorials/ex12.c.html

Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages