NAG Library Manual, Mark 27

Interfaces: FL CL CPP AD

NAG CPP Interface Introduction

Namespace: nagcpp

Namespace: opt

Class: CommE04WB

Method: setter_linesearchtolerance

NAG CPP Interface
opt::CommE04WB::setter_linesearchtolerance

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NAG Library Manual, Mark 27

Interfaces: FL CL CPP AD

NAG CPP Interface Introduction

Namespace: nagcpp

Namespace: opt

Class: CommE04WB

Method: setter_linesearchtolerance

▸▿ Contents

1 Description

2 Specification

3 Arguments

© The Numerical Algorithms Group Ltd. 2020

1 Description

The value

r

(

0 \leq r < 1

) controls the accuracy with which the step

α

taken during each iteration approximates a minimum of the merit function along the search direction (the smaller the value of

r

, the more accurate the linesearch)

Used by: linesearchtolerance in e04ucf and e04uff (no CPP interface).

CommE04WB::setter_linesearchtolerance returns a reference to the communication class itself.

2 Specification

LineSearchTolerance(double value = Default =0.9 )

LineSearchTolerance(double value = Default =0.9 , OptionalE04UE opt)

3 Arguments

1: $value$ – double Scalar: On entry: the required value of the argument.; Default:
Default $= 0.9$
2: $opt$ – OptionalE04UE Scalar: Optional argument container, derived from Optional.

© The Numerical Algorithms Group Ltd. 2020