petsc-3.11.4 2019-09-28
MatMultConstrained
The inner multiplication routine for a constrained matrix P^T A P.
Synopsis
#include "petscmat.h"
PetscErrorCode MatMultConstrained(Mat mat,Vec x,Vec y)
Neighbor-wise Collective on Mat and Vec
Input Parameters
| mat | - the matrix
|
| x | - the vector to be multilplied
|
Output Parameters
y -the result
Notes
The vectors x and y cannot be the same. I.e., one cannot
call MatMult(A,y,y).
Keywords
matrix, multiply, matrix-vector product, constraint
See Also
MatMult(), MatMultTranspose(), MatMultAdd(), MatMultTransposeAdd()
Level
beginner
Location
src/mat/interface/matrix.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages