NAG Library Manual, Mark 30
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
Keyword Search:
NAG Library Manual, Mark 30
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
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1
Description
The value
r
(
0
≤
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
CommE04WB
&
LineSearchTolerance
(
double
value
= Default =0.9
)
CommE04WB
&
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