petsc-3.4.5 2014-06-29

MatShift

Computes Y = Y + a I, where a is a PetscScalar and I is the identity matrix.

Synopsis

#include "petscmat.h"  
PetscErrorCode  MatShift(Mat Y,PetscScalar a)

Neighbor-wise Collective on Mat

Input Parameters

	Y	- the matrices
	a	- the PetscScalar

Keywords

matrix, add, shift

See Also

MatDiagonalSet()

Level:intermediate
Location:src/mat/utils/axpy.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages

Examples

src/mat/examples/tutorials/ex9.c.html
src/ksp/ksp/examples/tutorials/ex40.c.html