PetscRealSortSemiOrderedWithArrayInt#

Sorts an array of PetscReal in place in increasing order and reorders a second array of PetscInt to match the first.

Synopsis#

#include "petscsys.h"  
PetscErrorCode PetscRealSortSemiOrderedWithArrayInt(PetscInt n, PetscReal arr1[], PetscInt arr2[])

Not Collective

Input Parameter#

  • n - number of values

Input/Output Parameters#

  • arr1 - array of PetscReal to be sorted, modified on output

  • arr2 - array of PetscInt to be reordered, modified on output

Notes#

This function serves as an alternative to PetscSortRealWithArray(). While this function works for any array of PetscReal it is significantly faster if the array is not totally random. There are exceptions to this and so it is highly recommended that the user benchmark their code to see which routine is fastest.

See Also#

PetscTimSortWithArray(), PetscSortRealWithArrayInt(), PetscSortRealWithPermutation()

Level#

intermediate

Location#

src/sys/utils/sortso.c

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