PetscSortIntWithPermutation#

Computes the permutation of PetscInt that gives a sorted sequence.

Synopsis#

#include "petscsys.h"  
PetscErrorCode PetscSortIntWithPermutation(PetscInt n, const PetscInt i[], PetscInt idx[])

Not Collective

Input Parameters#

  • n - number of values to sort

  • i - values to sort

  • idx - permutation array. Must be initialized to 0:n-1 on input.

Note#

On output i is unchanged and idx[i] is the position of the i-th smallest index in i.

See Also#

PetscSortInt(), PetscSortRealWithPermutation(), PetscSortIntWithArray()

Level#

intermediate

Location#

src/sys/utils/sortip.c

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