MatNorm

Calculates various norms of a matrix.

#include "petscmat.h" 
PetscErrorCode  MatNorm(Mat mat,NormType type,PetscReal *nrm)

Collective on Mat

	mat	- the matrix
	type	- the type of norm, NORM_1, NORM_FROBENIUS, NORM_INFINITY

nrm -the resulting norm

PetscReal MatNorm(Mat A,NormType t)

MatNorm(A,t,&n); return n;