NEPSetFunction#

Sets the function to compute the nonlinear Function T(lambda) as well as the location to store the matrix.

Synopsis#

#include "slepcnep.h" 
PetscErrorCode NEPSetFunction(NEP nep,Mat F,Mat P,NEPFunctionFn *fun,void *ctx)

Collective

Input Parameters#

  • nep - the nonlinear eigensolver context

  • F - Function matrix

  • P - preconditioner matrix (usually same as F)

  • fun - Function evaluation routine (if NULL then NEP retains any previously set value), see NEPFunctionFn for the calling sequence

  • ctx - [optional] user-defined context for private data for the Function evaluation routine (may be NULL) (if NULL then NEP retains any previously set value)

See Also#

NEP: Nonlinear Eigenvalue Problems, NEPGetFunction(), NEPSetJacobian()

Level#

beginner

Location#

src/nep/interface/nepbasic.c

Examples#

src/nep/tutorials/ex27f.F90
src/nep/tutorials/ex20.c
src/nep/tutorials/ex21.c
src/nep/tutorials/ex20f.F90
src/nep/tutorials/ex27.c
src/nep/tutorials/ex54f.F90

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