DSNEPSetComputeMatrixFunction#

Sets a user-provided subroutine to compute the matrices T(lambda) or T’(lambda).

Synopsis#

#include "slepcds.h" 
PetscErrorCode DSNEPSetComputeMatrixFunction(DS ds,DSNEPMatrixFunctionFn *fun,void *ctx)

Logically Collective

Input Parameters#

  • ds - the direct solver context

  • fun - matrix function evaluation routine, see DSNEPMatrixFunctionFn for the calling sequence

  • ctx - a context pointer (the last parameter to the user function)

Note#

The result is computed as T(lambda) = sum_i E_i*f_i(lambda), and similarly for the derivative.

See Also#

DSNEPGetComputeMatrixFunction()

Level#

developer

Location#

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

Implementations#

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


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