petsc-3.8.4 2018-03-24
MatMultDiagonalBlock
Computes the matrix-vector product, y = Dx. Where D is defined by the inode or block structure of the diagonal
Synopsis
#include "petscmat.h"
PetscErrorCode MatMultDiagonalBlock(Mat mat,Vec x,Vec y)
Collective on Mat and Vec
Input Parameters
| mat | - the matrix
|
| x | - the vector to be multiplied
|
Output Parameters
y -the result
Notes
The vectors x and y cannot be the same. I.e., one cannot
call MatMult(A,y,y).
See Also
MatMultTranspose(), MatMultAdd(), MatMultTransposeAdd()
Level:developer
Location:src/mat/interface/matrix.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages