From: Richard Jones <rich@annexia.org>
To: Paolo Donadeo <p.donadeo@gmail.com>
Cc: caml-list caml-list <caml-list@yquem.inria.fr>
Subject: Re: [Caml-list] Strange behaviour of string_of_float
Date: Sun, 22 Jun 2008 20:58:31 +0100 [thread overview]
Message-ID: <20080622195831.GA22384@annexia.org> (raw)
In-Reply-To: <4b5157c30806220956p164d8346i3e832bc8b8666306@mail.gmail.com>
On Sun, Jun 22, 2008 at 06:56:22PM +0200, Paolo Donadeo wrote:
> string_of_float is not the inverse of float_of_string, at least in
> this example.
Yes, you wouldn't expect it to be, because the string is an
approximate base 10 representation of the float (which is itself only
an approximate base 2 representation of the transcendental number pi).
You might want to read a presentation called "What every computer
programmer should know about floating point arithmetic". There's a
PDF version here:
http://blogs.sun.com/darcy/resource/Wecpskafpa-ACCU.pdf
Rich.
--
Richard Jones
Red Hat
next prev parent reply other threads:[~2008-06-22 19:58 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-22 16:56 Paolo Donadeo
2008-06-22 19:58 ` Richard Jones [this message]
2008-06-22 20:45 ` [Caml-list] " Paolo Donadeo
2008-06-23 1:25 ` Brian Hurt
2008-06-23 7:50 ` Paolo Donadeo
2008-06-23 8:32 ` Mattias Engdegård
2008-06-23 8:50 ` Olivier Andrieu
2008-06-23 8:35 ` Jon Harrop
2008-06-22 20:32 ` Daniel Bünzli
2008-06-22 20:50 ` Paolo Donadeo
2008-06-23 8:45 ` David Allsopp
2008-06-23 8:55 ` Olivier Andrieu
2008-06-23 12:06 ` David Allsopp
2008-06-23 1:06 ` Brian Hurt
2008-06-23 7:58 ` Xavier Leroy
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