petsc3.15.0 20210405
VecWhichInactive
Creates an index set containing the indices where one of the following holds: a) VecLow(i) < V(i) < VecHigh(i) b) VecLow(i) = V(i) and D(i) <= 0 (< 0 when Strong is true) c) VecHigh(i) = V(i) and D(i) >= 0 (> 0 when Strong is true)
Synopsis
#include "petscvec.h"
PetscErrorCode VecWhichInactive(Vec VecLow, Vec V, Vec D, Vec VecHigh, PetscBool Strong, IS * S)
Collective on S
Input Parameters
 VecLow   lower bound

 V   Vector to compare

 D   Direction to compare

 VecHigh   higher bound

 Strong   indicator for applying strongly inactive test

OutputParameter
 S   The index set containing the indices i where the bound is inactive

Level
advanced
Location
src/vec/vec/utils/projection.c
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages