ISSetIdentity#

Informs the index set that it is an identity.

Synopsis#

#include "petscis.h" 
PetscErrorCode ISSetIdentity(IS is)

Logically Collective

Input Parameter#

  • is - the index set

Notes#

is will be considered the identity permanently, even if indices have been changes (for example, with ISGeneralSetIndices()). It’s a good idea to only set this property if is will not change in the future.

To clear this property, use ISClearInfoCache().

Developer Notes#

Some of these info routines have statements about values changing in the IS, this seems to contradict the fact that IS cannot be changed?

See Also#

IS, ISIdentity(), ISSetInfo(), ISClearInfoCache()

Level#

intermediate

Location#

src/vec/is/is/interface/index.c

Index of all IS routines
Table of Contents for all manual pages
Index of all manual pages