EPSSetTarget#

Sets the value of the target.

Synopsis#

#include "slepceps.h" 
PetscErrorCode EPSSetTarget(EPS eps,PetscScalar target)

Logically Collective

Input Parameters#

  • eps - the linear eigensolver context

  • target - the value of the target

Options Database Key#

  • -eps_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 EPSSetWhichEigenpairs().

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. -eps_target 1.0+2.0i.

See Also#

EPS: Eigenvalue Problem Solver, EPSGetTarget(), EPSSetWhichEigenpairs()

Level#

intermediate

Location#

src/eps/interface/epsbasic.c

Examples#

src/eps/tutorials/ex30.c
src/eps/tutorials/ex49.c
src/eps/tutorials/ex46.c
src/eps/tutorials/ex43.c
src/eps/tutorials/ex35.c

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