MatAYPX

Computes Y = X + a*Y.

#include "petscmat.h"  
int MatAYPX(PetscScalar *a,Mat X,Mat Y)

Collective on Mat

	X,Y	- the matrices
	a	- the PetscScalar multiplier

Contributed by: Matthew Knepley

This routine currently uses the MatAXPY() implementation.

This is slow, if you need it fast send email to petsc-maint@mcs.anl.gov

matrix, add