SNESLineSearchBTGetAlpha

Gets the descent parameter, alpha, in the SNESLINESEARCHBT variant that was set with SNESLineSearchBTSetAlpha()

Synopsis

#include "petscsnes.h"  
PetscErrorCode SNESLineSearchBTGetAlpha(SNESLineSearch linesearch, PetscReal *alpha)

Input Parameter

• linesearch - linesearch context

Output Parameter

• alpha - The descent parameter

See Also

SNES: Nonlinear Solvers, SNESLineSearch, SNESLineSearchGetLambda(), SNESLineSearchGetTolerances() SNESLINESEARCHBT, SNESLineSearchBTSetAlpha()

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