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#
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