EPSSetOperators#

Sets the matrices associated with the eigenvalue problem.

Synopsis#

#include "slepceps.h" 
PetscErrorCode EPSSetOperators(EPS eps,Mat A,Mat B)

Collective

Input Parameters#

  • eps - the linear eigensolver context

  • A - the matrix associated with the eigensystem

  • B - the second matrix in the case of generalized eigenproblems

Notes#

To specify a standard eigenproblem, use NULL for parameter B.

It must be called before EPSSetUp(). If it is called again after EPSSetUp() and the matrix sizes have changed then the EPS object is reset.

For structured eigenproblem types such as EPS_BSE (see EPSSetProblemType()), the provided matrices must have been created with the corresponding helper function, i.e., MatCreateBSE().

See Also#

EPS: Eigenvalue Problem Solver, EPSSolve(), EPSSetUp(), EPSReset(), EPSGetST(), STGetMatrix(), EPSSetProblemType()

Level#

beginner

Location#

src/eps/interface/epssetup.c

Examples#

src/eps/tutorials/ex31.c
src/eps/tutorials/ex55.c
src/eps/tutorials/ex9.c
src/eps/tutorials/ex3.c
src/eps/tutorials/ex29.c
src/eps/tutorials/ex6f.F90
src/eps/tutorials/ex2.c
src/eps/tutorials/ex36.c
src/eps/tutorials/ex18.c
src/eps/tutorials/ex1f.F90

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