Re: [boost] [test] New location of fraction_tolerance()

Subject: Re: [boost] [test] New location of fraction_tolerance()
From: Gennadiy Rozental (rogeeff_at_[hidden])
Date: 2010-05-16 17:14:37

Jeremiah Willcock <jewillco <at> osl.iu.edu> writes:

> 
> There used to be a function named fraction_tolerance() in 
> boost::test_tools (in <boost/test/floating_point_comparison.hpp>) that 
> marked that a floating-point comparison uses a fraction as its tolerance 
> value.  That function seems to have disappeared in one of the recent 
> checkins.  What is the intended replacement?  There is no 
> boost::math::fpc::fraction_tolerance which is what appears from the new 
> naming pattern to be the correct name.  Is there an equivalent to that 
> function?
> 

You can use plain FPT value as fraction tolerance. You need percent_tolerance to
specify that it is different kind of tolerance.

New API is intended for use in production code. It have no dependencies on any
other Boost.Test components (including predicate_result).

You cna read more about it in my BoostCon 2010 presentation here:

http://www.filetolink.com/ca7c54ea

There should be examples available soon as well.

Gennadiy