PETSc version 3.16.0
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PetscSortSplitReal

Quick-sort split of an array of PetscReals in place.

Synopsis

#include "petscsys.h"  
PetscErrorCode  PetscSortSplitReal(PetscInt ncut,PetscInt n,PetscReal a[],PetscInt idx[])
Not Collective

Input Parameters

ncut - splitig index
n - number of values to sort

Input/Output Parameters

a - array of values, on output the values are permuted 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 - index for array a, on output permuted accordingly

See Also

PetscSortInt(), PetscSortRealWithPermutation()

Level

intermediate

Location

src/sys/utils/sortd.c
Index of all Sys routines
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Index of all manual pages