petsc-master 2014-09-19
Report Typos and Errors

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