petsc-dev 2014-04-15
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MatNullSpaceRemove

Removes all the components of a null space from a vector.

Synopsis

#include "petscmat.h" 
PetscErrorCode  MatNullSpaceRemove(MatNullSpace sp,Vec vec)
Collective on MatNullSpace

Input Parameters

sp - the null space context
vec - the vector from which the null space is to be removed
out - if this is requested (not NULL) then this is a vector with the null space removed otherwise the removal is done in-place (in vec)

Note: The user is not responsible for the vector returned and should not destroy it.

Keywords

PC, null space, remove

See Also

MatNullSpaceCreate(), MatNullSpaceDestroy(), MatNullSpaceSetFunction()

Level:advanced
Location:
src/mat/interface/matnull.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