petsc-3.7.1 2016-05-15
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SNESLineSearchSetLambda

Sets the linesearch steplength.

Synopsis

#include "petscsnes.h" 
PetscErrorCode  SNESLineSearchSetLambda(SNESLineSearch linesearch, PetscReal lambda)

Input Parameters

linesearch - linesearch context Many br
lambda - The last steplength. Many br

Notes

This routine is typically used within implementations of SNESLineSearchApply() Many brto set the final steplength. This routine (and SNESLineSearchGetLambda()) were Many bradded in order to facilitate Quasi-Newton methods that use the previous steplength Many bras an inner scaling parameter. Many br

Many br

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