petsc-3.13.6 2020-09-29

ISPermutation

PETSC_TRUE or PETSC_FALSE depending on whether the index set has been declared to be a permutation.

Synopsis

#include "petscis.h" 
PetscErrorCode  ISPermutation(IS is,PetscBool  *perm)

Logically Collective on IS

Input Parmeters

is -the index set

Output Parameters

perm -PETSC_TRUE if a permutation, else PETSC_FALSE

Note: If it is not alread known that the IS is a permutation (if ISSetPermutation() or ISSetInfo() has not been called), this routine will not attempt to compute whether the index set is a permutation and will assume perm is PETSC_FALSE. To compute the value when it is not already known, use ISGetInfo() with the compute flag set to PETSC_TRUE.

Level

intermediate

Location