PEPSetTarget#

Sets the value of the target.

Synopsis#

#include "slepcpep.h" 
PetscErrorCode PEPSetTarget(PEP pep,PetscScalar target)

Logically Collective

Input Parameters#

  • pep - the polynomial eigensolver context

  • target - the value of the target

Options Database Key#

  • -pep_target <target> - the value of the target

Notes#

The target is a scalar value used to determine the portion of the spectrum of interest. It is used in combination with PEPSetWhichEigenpairs().

When PETSc is built with real scalars, it is not possible to specify a complex target.

In the case of complex scalars, a complex value can be provided in the command line with [+/-][realnumber][+/-]realnumberi with no spaces, e.g. -pep_target 1.0+2.0i.

See Also#

PEP: Polynomial Eigenvalue Problems, PEPGetTarget(), PEPSetWhichEigenpairs()

Level#

intermediate

Location#

src/pep/interface/pepbasic.c

Examples#

src/pep/tutorials/ex50.c
src/pep/tutorials/ex40.c

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