DSNEPSetFN#

Sets a number of functions that define the nonlinear eigenproblem.

Synopsis#

#include "slepcds.h" 
PetscErrorCode DSNEPSetFN(DS ds,PetscInt n,FN fn[])

Collective

Input Parameters#

  • ds - the direct solver context

  • n - number of functions

  • fn - array of functions

Notes#

The nonlinear eigenproblem is defined in terms of the split nonlinear operator T(lambda) = sum_i A_i*f_i(lambda).

This function must be called before DSAllocate(). Then DSAllocate() will allocate an extra matrix A_i per each function, that can be filled in the usual way.

See Also#

DSNEPGetFN(), DSAllocate()

Level#

advanced

Location#

src/sys/classes/ds/impls/nep/dsnep.c

Implementations#

DSNEPSetFN_NEP() in src/sys/classes/ds/impls/nep/dsnep.c

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