petsc-3.11.4 2019-09-28
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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

Examples

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

Index of all Mat routines
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Index of all manual pages