NAG CPP Interface


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1 Description

The value r (0r<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 =0.9
2: opt OptionalE04UE Scalar
Optional argument container, derived from Optional.