SNESLineSearchBTSetAlpha

Sets the descent parameter, alpha, in the SNESLINESEARCHBT SNESLineSearch variant.

Synopsis

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

Input Parameters

• linesearch - linesearch context

• alpha - The descent parameter

See Also

SNES: Nonlinear Solvers, SNESLineSearch, SNESLineSearchSetLambda(), SNESLineSearchGetTolerances(), SNESLINESEARCHBT, SNESLineSearchBTGetAlpha()

Level

intermediate

Location

src/snes/linesearch/impls/bt/linesearchbt.c

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Index of all SNES routines
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