MatGetNullSpaces

gets the null spaces, transpose null spaces, and near null spaces from an array of matrices that were supplied with MatSetNullSpace(), MatSetTransposeNullSpace(), and MatSetNearNullSpace()

Synopsis

#include "petscmat.h" 
PetscErrorCode MatGetNullSpaces(PetscInt n, Mat mat[], MatNullSpace *nullsp[])

Logically Collective

Input Parameters

• n - the number of matrices

• mat - the array of matrices

Output Parameters

• nullsp - an array of null spaces, NULL will be inserted for each matrix that does not have a null space, length 3 * n

Note

Call MatRestoreNullspaces() to provide these to another array of matrices

See Also

Matrices, Mat, MatCreate(), MatNullSpaceCreate(), MatSetNearNullSpace(), MatGetNullSpace(), MatSetTransposeNullSpace(), MatGetTransposeNullSpace(), MatNullSpaceRemove(), MatRestoreNullSpaces(), MatNullSpace

Level

developer

Location

src/mat/interface/matrix.c

---

Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages