petsc-3.14.6 2021-03-30
SNESLineSearchBTGetAlpha
Gets the descent parameter, alpha, in the BT linesearch variant.
Synopsis
#include "petscsnes.h"
PetscErrorCode SNESLineSearchBTGetAlpha(SNESLineSearch linesearch, PetscReal *alpha)
Input Parameters
| linesearch | - linesearch context
|
Output Parameters
| alpha | - The descent parameter
|
See Also
SNESLineSearchGetLambda(), SNESLineSearchGetTolerances() SNESLINESEARCHBT
Level
intermediate
Location
src/snes/linesearch/impls/bt/linesearchbt.c
Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages