**petsc-master 2017-09-17**

# MatCreateNormal

Creates a new matrix object that behaves like A'*A.
### Synopsis

#include "petscmat.h"
PetscErrorCode MatCreateNormal(Mat A,Mat *N)

Collective on Mat

### Input Parameter

**A ** -the (possibly rectangular) matrix

### Output Parameter

**N ** -the matrix that represents A'*A

Notes: The product A'*A is NOT actually formed! Rather the new matrix
object performs the matrix-vector product by first multiplying by
A and then A'

**Level:**intermediate

Location:src/mat/impls/normal/normm.c

Index of all Mat routines

Table of Contents for all manual pages

Index of all manual pages

### Examples

src/ksp/ksp/examples/tutorials/ex27.c.html