petsc-3.11.4 2019-09-28
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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