petsc-3.5.4 2015-05-23
MatDiagonalScale
Scales a matrix on the left and right by diagonal matrices that are stored as vectors. Either of the two scaling matrices can be NULL.
Synopsis
#include "petscmat.h"
PetscErrorCode MatDiagonalScale(Mat mat,Vec l,Vec r)
Collective on Mat
Input Parameters
| mat | - the matrix to be scaled
|
| l | - the left scaling vector (or NULL)
|
| r | - the right scaling vector (or NULL)
|
Notes
MatDiagonalScale() computes A = LAR, where
L = a diagonal matrix (stored as a vector), R = a diagonal matrix (stored as a vector)
The L scales the rows of the matrix, the R scales the columns of the matrix.
See Also
MatScale()
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
Examples
src/snes/examples/tutorials/ex70.c.html
src/tao/pde_constrained/examples/tutorials/elliptic.c.html
src/tao/pde_constrained/examples/tutorials/parabolic.c.html
src/tao/pde_constrained/examples/tutorials/hyperbolic.c.html