petsc-3.10.5 2019-03-28
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
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Index of all manual pages