ISGeneralSetIndicesFromMask

Sets the indices for an ISGENERAL index set using a boolean mask

Synopsis

#include "petscis.h"  
PetscErrorCode ISGeneralSetIndicesFromMask(IS is, PetscInt rstart, PetscInt rend, const PetscBool mask[])

Collective

Input Parameters

• is - the index set

• rstart - the range start index (inclusive)

• rend - the range end index (exclusive)

• mask - the boolean mask array of length rend-rstart, indices will be set for each PETSC_TRUE value in the array

Note

The mask array may be freed by the user after this call.

Example

   PetscBool mask[] = {PETSC_FALSE, PETSC_TRUE, PETSC_FALSE, PETSC_FALSE, PETSC_TRUE};
   ISGeneralSetIndicesFromMask(is,10,15,mask);

will feed the IS with indices

  {11, 14}

locally.

See Also

Low-level Vector Communication, IS, ISCreateGeneral(), ISGeneralSetIndices(), ISGENERAL

Level

beginner

Location

src/vec/is/is/impls/general/general.c

Implementations

ISGeneralSetIndicesFromMask_General() in src/vec/is/is/impls/general/general.c

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