petsc-3.11.4 2019-09-28
PetscSortSplit
Quick-sort split of an array of PetscScalars in place.
Synopsis
#include "petscsys.h"
PetscErrorCode PetscSortSplit(PetscInt ncut,PetscInt n,PetscScalar a[],PetscInt idx[])
Not Collective
Input Parameters
| ncut | - splitig index
|
| n | - number of values to sort
|
| a | - array of values
|
| idx | - index for array a
|
Output Parameters
| a | - permuted array of values such that its elements satisfy:
abs(a[i]) >= abs(a[ncut-1]) for i < ncut and
abs(a[i]) <= abs(a[ncut-1]) for i >= ncut
|
| idx | - permuted index of array a
|
See Also
PetscSortInt(), PetscSortRealWithPermutation()
Level
intermediate
Location
src/sys/utils/sortd.c
Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages