petsc-3.13.6 2020-09-29
SNESLineSearchSetLambda
Sets the linesearch steplength.
Synopsis
#include "petscsnes.h"
PetscErrorCode SNESLineSearchSetLambda(SNESLineSearch linesearch, PetscReal lambda)
Input Parameters
| linesearch | - linesearch context
|
| lambda | - The last steplength.
|
Notes
This routine is typically used within implementations of SNESLineSearchApply()
to set the final steplength. This routine (and SNESLineSearchGetLambda()) were
added in order to facilitate Quasi-Newton methods that use the previous steplength
as an inner scaling parameter.
See Also
SNESLineSearchGetLambda()
Level
advanced
Location
src/snes/linesearch/interface/linesearch.c
Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages