NEPRIISetHermitian#

Sets a flag to indicate if the Hermitian version of the scalar nonlinear equation must be used by the solver.

Synopsis#

#include "slepcnep.h" 
PetscErrorCode NEPRIISetHermitian(NEP nep,PetscBool herm)

Logically Collective

Input Parameters#

  • nep - the nonlinear eigensolver context

  • herm - PETSC_TRUE if the Hermitian version is preferred

Options Database Key#

  • -nep_rii_hermitian - toggle the Hermitian version

Notes#

By default, the scalar nonlinear equation \(x^*T(\sigma)^{-1}T(z)x=0\) is solved at each step of the nonlinear iteration. When this flag is set the simpler form \(x^*T(z)x=0\) is used, which is supposed to be valid only for Hermitian problems.

See Also#

NEP: Nonlinear Eigenvalue Problems, NEPRII, NEPRIIGetHermitian()

Level#

intermediate

Location#

src/nep/impls/rii/rii.c

Implementations#

NEPRIISetHermitian_RII() in src/nep/impls/rii/rii.c

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