PETSc version 3.16.6

ISGetPointSubrange

Configures the input IS to be a subrange for the traversal information given

#include "petscis.h"  
PetscErrorCode ISGetPointSubrange(IS subpointIS, PetscInt pStart, PetscInt pEnd, const PetscInt *points)

Not collective

	subpointIS	- The IS object to be configured
	pStar t	- The first index of the subrange
	pEnd	- One past the last index for the subrange
	points	- The indices for the entire range, from ISGetPointRange()

subpointIS

- The IS object now configured to be a subrange

The input IS will now respond properly to calls to ISGetPointRange() and return the subrange.

intermediate