ISRenumber#

Renumbers the non-negative entries of an index set in a contiguous way, starting from 0.

Synopsis#

#include "petscis.h" 
PetscErrorCode ISRenumber(IS subset, IS subset_mult, PetscInt *N, IS *subset_n)

Collective

Input Parameters#

  • subset - the index set

  • subset_mult - the multiplicity of each entry in subset (optional, can be NULL)

Output Parameters#

  • N - one past the largest entry of the new IS

  • subset_n - the new IS

Notes: All negative entries are mapped to -1. Indices with non positive multiplicities are skipped.

See Also#

Level#

intermediate

Location#

src/vec/is/is/interface/index.c

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Index of all IS routines
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Index of all manual pages