EPSCISSSetQuadRule#

Sets the quadrature rule used in the CISS solver.

Synopsis#

#include "slepceps.h" 
PetscErrorCode EPSCISSSetQuadRule(EPS eps,EPSCISSQuadRule quad)

Logically Collective

Input Parameters#

  • eps - the linear eigensolver context

  • quad - the quadrature rule, see EPSCISSQuadRule for possible values

Options Database Key#

  • -eps_ciss_quadrule <quad> - sets the quadrature rule, either trapezoidal or chebyshev

Notes#

By default, the trapezoidal rule is used (EPS_CISS_QUADRULE_TRAPEZOIDAL).

If the chebyshev option is specified (EPS_CISS_QUADRULE_CHEBYSHEV), then Chebyshev points are used as quadrature points.

See Also#

EPS: Eigenvalue Problem Solver, EPSCISS, EPSCISSGetQuadRule(), EPSCISSQuadRule

Level#

advanced

Location#

src/eps/impls/ciss/ciss.c

Implementations#

EPSCISSSetQuadRule_CISS() in src/eps/impls/ciss/ciss.c

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