petsc-3.3-p7 2013-05-11

MatAYPX

Computes Y = a*Y + X.

#include "petscmat.h"  
PetscErrorCode  MatAYPX(Mat Y,PetscScalar a,Mat X,MatStructure str)

Logically on Mat

	a	- the PetscScalar multiplier
	Y	- the first matrix
	X	- the second matrix
	str	- either SAME_NONZERO_PATTERN, DIFFERENT_NONZERO_PATTERN or SUBSET_NONZERO_PATTERN

matrix, add