petsc-master 2014-12-27
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MatGetNullSpace

retrieves the null space to a matrix.

Synopsis

#include "petscmat.h" 
PetscErrorCode MatGetNullSpace(Mat mat, MatNullSpace *nullsp)
Logically Collective on Mat and MatNullSpace

Input Parameters

mat - the matrix
nullsp - the null space object

Notes

This null space is used by solvers. Overwrites any previous null space that may have been attached

See Also

MatCreate(), MatNullSpaceCreate(), MatSetNearNullSpace()

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