PETSc version 3.15.5
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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