:orphan: # MatNullSpaceDestroy Destroys a data structure used to project vectors out of null spaces. ## Synopsis ``` #include "petscmat.h" PetscErrorCode MatNullSpaceDestroy(MatNullSpace *sp) ``` Collective ## Input Parameter - ***sp -*** the null space context to be destroyed ## See Also [](ch_matrices), `Mat`, `MatNullSpace`, `MatNullSpaceCreate()`, `MatNullSpaceRemove()`, `MatNullSpaceSetFunction()` ## Level advanced ## Location src/mat/interface/matnull.c ## Examples src/dm/impls/stag/tutorials/ex2.c
src/dm/impls/stag/tutorials/ex3.c
src/dm/impls/stag/tutorials/ex4.c
src/ksp/ksp/tutorials/ex29.c
src/ksp/ksp/tutorials/ex32.c
src/ksp/ksp/tutorials/ex34.c
src/ksp/ksp/tutorials/ex35.cxx
src/ksp/ksp/tutorials/ex36.cxx
src/ksp/ksp/tutorials/ex49.c
src/ksp/ksp/tutorials/ex50.c
src/ksp/ksp/tutorials/ex56.c
--- [Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/mat/interface/matnull.c) [Index of all Mat routines](index.md) [Table of Contents for all manual pages](/manualpages/index.md) [Index of all manual pages](/manualpages/singleindex.md)