petsc-3.8.4 2018-03-24

ISLocate

determine the location of an index within the local component of an index set

#include "petscis.h" 
PetscErrorCode ISLocate(IS is, PetscInt key, PetscInt *location)

Not Collective

	is	- the index set
	key	- the search key

location -if >= 0, a location within the index set that is equal to the key, otherwise the key is not in the index set