VecWhichInactive#

Creates an IS based on a set of vectors

Synopsis#

#include "petscvec.h"  
PetscErrorCode VecWhichInactive(Vec VecLow, Vec V, Vec D, Vec VecHigh, PetscBool Strong, IS *S)

Collective

Input Parameters#

  • VecLow - lower bound

  • V - Vector to compare

  • D - Direction to compare

  • VecHigh - higher bound

  • Strong - indicator for applying strongly inactive test

Output Parameter#

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

Notes#

Creates an index set containing the indices where one of the following holds:

  - VecLow(i)  < V(i) < VecHigh(i)
  - VecLow(i)  = V(i) and D(i) <= 0 (< 0 when Strong is true)
  - VecHigh(i) = V(i) and D(i) >= 0 (> 0 when Strong is true)

See Also#

Vec

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