# PetscSortRealWithPermutation

Computes the permutation of values that gives a sorted sequence.

### Synopsis

    #include "petsc.h"
    #include "petscsys.h"
    int PetscSortRealWithPermutation(int n,const PetscReal i[],int 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.

### Notes

i is unchanged on output.

### See Also

PetscSortReal(), PetscSortIntWithPermutation()

Level:intermediate
Location: src/sys/src/utils/sortip.c
Index of all Sys routines
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Index of all manual pages