DSSortWithPermutation#

Reorders the result of DSSolve() according to a given permutation.

Synopsis#

#include "slepcds.h" 
PetscErrorCode DSSortWithPermutation(DS ds,PetscInt perm[],PetscScalar eigr[],PetscScalar eigi[])

Logically Collective

Input Parameters#

  • ds - the direct solver context

  • perm - permutation that indicates the new ordering

Input/Output Parameters#

  • eigr - array with the reordered eigenvalues (real part)

  • eigi - array with the reordered eigenvalues (imaginary part)

Notes#

This routine reorders the arrays provided in eigr and eigi, and also the dense system stored inside ds (assumed to be in condensed form). There is no sorting criterion, as opposed to DSSort(). Instead, the new ordering is given in argument perm.

See Also#

DS: Direct Solver (or Dense System), DSSolve(), DSSort()

Level#

advanced

Location#

src/sys/classes/ds/interface/dsops.c

Implementations#

DSSortWithPermutation_NHEP() in src/sys/classes/ds/impls/nhep/dsnhep.c

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