petsc-3.11.4 2019-09-28
SNESLineSearchBTSetAlpha
Sets the descent parameter, alpha, in the BT linesearch variant.
Synopsis
#include "petscsnes.h"
PetscErrorCode SNESLineSearchBTSetAlpha(SNESLineSearch linesearch, PetscReal alpha)
Input Parameters
| linesearch | - linesearch context
|
| alpha | - The descent parameter
|
See Also
SNESLineSearchSetLambda(), SNESLineSearchGetTolerances() SNESLINESEARCHBT
Level
intermediate
Location
src/snes/linesearch/impls/bt/linesearchbt.c
Index of all SNES routines
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