petsc-3.4.5 2014-06-29
MatSetNullSpace
attaches a null space to a matrix. This null space will be removed from the resulting vector whenever MatMult() is called
Synopsis
#include "petscmat.h"
PetscErrorCode MatSetNullSpace(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:advanced
Location:src/mat/interface/matrix.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages
Examples
src/ksp/ksp/examples/tutorials/ex29.c.html
src/ksp/ksp/examples/tutorials/ex32.c.html
src/ksp/ksp/examples/tutorials/ex34.c.html
src/ksp/ksp/examples/tutorials/ex50.c.html
src/snes/examples/tutorials/ex7.c.html
src/snes/examples/tutorials/ex12.c.html
src/snes/examples/tutorials/ex62.c.html