RE: [boost] Re: Re: test_fp_comparisons and rounding errors

From: Rozental, Gennadiy (gennadiy.rozental_at_[hidden])
Date: 2003-07-11 13:38:50

> Do I understand correctly that
> 
> BOOST_CHECK_CLOSE(v1, v2, 2. * std::numeric_limits::epsilon() );
> 
> would check that the absolute difference between v1 and v2 is 
> not more than two eps?
> 
> Paul

No. BOOST_CHECK_CLOSE performs relative errors comparison. See 
http://www.boost.org/libs/test/doc/floating_point_comparison.htm

(Ignore part that tries to calculate the tolerance based on number of
rounding errors)

Gennadiy.