SNESLineSearchGetVIFunctions

Sets VI-specific functions for line search computation.

Synopsis

#include "petscsnes.h" 
PetscErrorCode SNESLineSearchGetVIFunctions(SNESLineSearch linesearch, SNESLineSearchVIProjectFn **projectfunc, SNESLineSearchVINormFn **normfunc, SNESLineSearchVIDirDerivFn **dirderivfunc)

Not Collective

Input Parameter

• linesearch - the line search context, obtain with SNESGetLineSearch()

Output Parameters

• projectfunc - function for projecting the function to the bounds, see SNESLineSearchVIProjectFn for calling sequence

• normfunc - function for computing the norm of an active set, see SNESLineSearchVINormFn for calling sequence

• dirderivfunc - function for computing the directional derivative of an active set, see SNESLineSearchVIDirDerivFn for calling sequence

See Also

SNES: Nonlinear Solvers, SNES, SNESLineSearch, SNESLineSearchSetVIFunctions(), SNESLineSearchGetPostCheck(), SNESLineSearchGetPreCheck(), SNESLineSearchVIProjectFn, SNESLineSearchVINormFn

Level

advanced

Location

src/snes/linesearch/interface/linesearch.c

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