# EPSSortEigenvalues

Sorts a list of eigenvalues according to the criterion specified via EPSSetWhichEigenpairs().

### Synopsis

    #include "slepceps.h"
    PetscErrorCode EPSSortEigenvalues(EPS eps,PetscInt n,PetscScalar *eigr,PetscScalar *eigi,PetscInt *perm)

Not Collective

### Input Parameters

| eps | - the eigensolver context
| n | - number of eigenvalues in the list
| eigr | - pointer to the array containing the eigenvalues
| eigi | - imaginary part of the eigenvalues (only when using real numbers)

### Output Parameter

perm - resulting permutation

### Note

The result is a list of indices in the original eigenvalue array corresponding to the first nev eigenvalues sorted in the specified criterion.

### See Also

EPSSetWhichEigenpairs()

Location: src/eps/interface/solve.c
Index of all EPS routines
Table of Contents for all manual pages
Index of all manual pages