Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > comp.lang.c++ > #13663
| From | Thomas Boell <tboell@domain.invalid> |
|---|---|
| Newsgroups | comp.lang.c++ |
| Subject | Re: comparing floating point numbers |
| Date | 2012-01-30 16:29 +0100 |
| Organization | albasani.net |
| Message-ID | <20120130162912.0b18f547@arcadia> (permalink) |
| References | <jg44ad$fti$1@news.icm.edu.pl> <4f25d682$0$15922$cc2e38e6@news.uslec.net> |
On Sun, 29 Jan 2012 18:30:06 -0500 LR <lruss@superlink.net> wrote: > Adam Majewski wrote: > > > I have seen code that compers like that : > > > > if (b == 0.0 && (a == 0.25 || a == -0.75)) > > > I suggest these two articles in the FAQ > http://www.parashift.com/c++-faq-lite/index.html > > [29.16] Why is floating point so inaccurate? Why doesn't this print 0.43? > http://www.parashift.com/c++-faq-lite/newbie.html#faq-29.16 > > Perhaps more relevant to your question and with some interesting references. > [29.17] Why doesn't my floating-point comparison work? > http://www.parashift.com/c++-faq-lite/newbie.html#faq-29.17 Another very informative article about this topic is this one: Comparing floating point numbers - Bruce Dawson http://www.cygnus-software.com/papers/comparingfloats/comparingfloats.htm
Back to comp.lang.c++ | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
comparing floating point numbers Adam Majewski <adammaj1@o2.pl> - 2012-01-29 19:48 +0100
Re: comparing floating point numbers BCFD36 <bcfd36@cruzio.com> - 2012-01-29 11:02 -0800
Re: comparing floating point numbers "MikeWhy" <boat042-nospam@yahoo.com> - 2012-01-29 13:25 -0600
Re: comparing floating point numbers "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2012-01-29 20:40 +0100
Re: comparing floating point numbers Adam Majewski <adammaj1@o2.pl> - 2012-01-30 18:03 +0100
Re: comparing floating point numbers Marcel Müller <news.5.maazl@spamgourmet.com> - 2012-01-29 21:34 +0100
Re: comparing floating point numbers BCFD36 <bcfd36@cruzio.com> - 2012-01-29 14:55 -0800
Re: comparing floating point numbers Miles Bader <miles@gnu.org> - 2012-01-30 11:48 +0900
Re: comparing floating point numbers Juha Nieminen <nospam@thanks.invalid> - 2012-01-30 14:53 +0000
Re: comparing floating point numbers scott@slp53.sl.home (Scott Lurndal) - 2012-01-30 17:22 +0000
Re: comparing floating point numbers Robert Wessel <robertwessel2@yahoo.com> - 2012-01-30 13:55 -0600
Re: comparing floating point numbers glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2012-02-13 01:56 +0000
Re: comparing floating point numbers LR <lruss@superlink.net> - 2012-01-29 18:30 -0500
Re: comparing floating point numbers Thomas Boell <tboell@domain.invalid> - 2012-01-30 16:29 +0100
Re: comparing floating point numbers Christian Gollwitzer <auriocus@gmx.de> - 2012-01-30 08:07 +0100
Re: comparing floating point numbers glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2012-02-13 01:59 +0000
Re: comparing floating point numbers Nick Keighley <nick_keighley_nospam@hotmail.com> - 2012-01-30 06:26 -0800
csiph-web