petsc-3.10.5 2019-03-28
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# TaoLineSearchSetInitialStepLength

Sets the initial step length of a line search. If this value is not set then 1.0 is assumed.

### Synopsis

    #include "petsctaolinesearch.h"
    PetscErrorCode TaoLineSearchSetInitialStepLength(TaoLineSearch ls,PetscReal s)

Logically Collective on TaoLineSearch

### Input Parameters

| ls | - the TaoLineSearch context
| s | - the initial step size

### See Also

TaoLineSearchGetStepLength(), TaoLineSearchApply()

### Level

intermediate

### Location

src/tao/linesearch/interface/taolinesearch.c
Index of all TaoLineSearch routines
Table of Contents for all manual pages
Index of all manual pages