MatCreateNormal#
Creates a new MATNORMAL matrix object that behaves like \(A^T A\).
Synopsis#
#include "petscmat.h"
PetscErrorCode MatCreateNormal(Mat A, Mat *N)
Collective
Input Parameter#
A - the (possibly rectangular) matrix
Output Parameter#
N - the matrix that represents \(A^T A \)
Notes#
The product \(A^T A\) is NOT actually formed! Rather the new matrix
object performs the matrix-vector product, MatMult(), by first multiplying by
\(A\) and then \(A^T\)
If MatGetFactor() is called on this matrix with MAT_FACTOR_QR then the inner matrix A is used for the factorization
See Also#
Matrices, Mat, MATNORMAL, MatMult(), MatNormalGetMat(), MATNORMALHERMITIAN, MatCreateNormalHermitian()
Level#
intermediate
Location#
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages