ISSetPermutation#

Informs the index set that it is a permutation.

Synopsis#

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

Logically Collective

Input Parameter#

  • is - the index set

Notes#

is will be considered a permutation 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().

The debug version of the libraries (./configure –with-debugging=1) checks if the index set is actually a permutation. The optimized version just believes you.

See Also#

IS, ISPermutation(), 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