From: ptkwt@... (Phil Tomson)
Date: 2004-05-13T03:38:52+09:00
Subject: Re: Major Addition Bug?

In article <c7tljo01576@enews4.newsguy.com>,
Phil Tomson <ptkwt@aracnet.com> wrote:
>In article <200405121653.i4CGrEm04797@moulon.inra.fr>,
>ts  <decoux@moulon.inra.fr> wrote:
>>>>>>> "S" == Sean O'Dell <sean@celsoft.com> writes:
>>
>>S> raise "false" if ((625.91 + 900.00 + 22.00) != 1547.91)
>>
>> Well, this is well known
>>
>
>I'm not sure how well known this is.  Is it well known as being a problem 
>or well known as in "you should never do this sort of thing".
>
>Seems to present a major problem if you want to deal with financial 
>figures, for example.  Are there any workarounds?

Sorry to respond to my own post: 

Probably the easiest workaround is not to use '==' or '!=' to compare 
floating point numbers.  Use '>','<' instead.

Or round off.  Maybe mathn does what you need it to do.

Phil