[Bioperl-l] evalues/floating point tests

Mark A. Jensen maj at fortinbras.us
Sat Jan 17 17:06:23 EST 2009

I am getting these funky fails as well (ActiveState/Cygwin/Vista and 
strawberry/Cygwin/Vista); I'm all for the kludge, should prevent a LOT of 
chatter at support, but I can try to ferret out the underlying issue.

----- Original Message ----- 
From: "Chris Fields" <cjfields at illinois.edu>
To: "BioPerl List" <bioperl-l at lists.open-bio.org>
Sent: Saturday, January 17, 2009 4:53 PM
Subject: [Bioperl-l] evalues/floating point tests

> I've noticed an odd issue when testing BioPerl on WinXP yesterday  which 
> doesn't appear to be popping up anywhere else.  When comparing  floating point 
> numbers, several tests fail like the following:
> #   Failed test at t\SearchIO\blast_pull.t line 40.
> #          got: '1e-23'
> #     expected: '1e-023'
> #   Failed test at t\SearchIO\blast_pull.t line 67.
> #          got: '6e-59'
> #     expected: '6e-059'
> These are generally in lines like (for the example above)
> is $result->get_parameter('expect'), 1e-23;
> I'm adding a method to Bio::Root::Test for comparing two floating  point 
> numbers based on equality:
> float_eq $float1, $float2, $message;
> This basically wraps is() but runs both values through 'sprintf("%g",  $foo)' 
> prior to the comparison; it has a prototype requiring two  values to be passed 
> and an optional message.  Any objections to the  method name or adding this 
> in?  I've already converted many of the  tests in t/SearchIO over but wanted 
> to pass it by the group prior to  an actual commit.
> chris
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