petsc-3.14.6 2021-03-30
MatNullSpaceTest
Tests if the claimed null space is really a null space of a matrix
Synopsis
#include "petscmat.h"
PetscErrorCode MatNullSpaceTest(MatNullSpace sp,Mat mat,PetscBool *isNull)
Collective on MatNullSpace
Input Parameters
| sp | - the null space context
|
| mat | - the matrix
|
Output Parameters
| isNull | - PETSC_TRUE if the nullspace is valid for this matrix
|
See Also
MatNullSpaceCreate(), MatNullSpaceDestroy(), MatNullSpaceSetFunction()
Level
advanced
Location
src/mat/interface/matnull.c
Examples
src/ts/tutorials/ex50.c.html
src/tao/unconstrained/tutorials/spectraladjointassimilation.c.html
Index of all Mat routines
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Index of all manual pages