PETSc version 3.15.4
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MatMatRestrict

Y = A*X or A'*X

Synopsis

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

Input Parameters

mat - the matrix
x - the input dense matrix

Output Parameters

y - the output dense matrix

Notes

This allows one to use either the restriction or interpolation (its transpose) matrix to do the restriction. y matrix can be reused if already created with the proper sizes, otherwise it will be recreated. y must be initialized to NULL if not supplied.

See Also

MatRestrict(), MatInterpolate(), MatMatInterpolate()

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