MatSNESMFAddNullSpace
Provides a null space that an operator is supposed to have. Since roundoff will create a small component in the null space, if you know the null space you may have it automatically removed.
Synopsis
#include "snes.h"
int MatSNESMFAddNullSpace(Mat J,PCNullSpace nullsp)
Collective on Mat
Input Parameters
Keywords
SNES, matrix-free, null space
See Also
PCNullSpaceCreate(), MatSNESMFGetH(), MatCreateSNESMF(),
MatSNESMFSetHHistory(), MatSNESMFResetHHistory(),
MatSNESMFKSPMonitor(), MatSNESMFErrorRel()
Level:advanced
Location:src/snes/mf/snesmfj.c
SNES Index
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