petsc-3.8.4 2018-03-24

ISRenumber

Renumbers an index set (with multiplicities) in a contiguous way.

#include "petscis.h" 
PetscErrorCode ISRenumber(IS subset, IS subset_mult, PetscInt *N, IS *subset_n)

Collective on IS

subset -the index set

subset_mult -the multiplcity of each entry in subset (optional, can be NULL)

N -the maximum entry of the new IS

subset_n -the new IS