From: Olivier Andrieu <andrieu@oxygene.ijm.jussieu.fr>
To: caml-list@inria.fr
Subject: Floating-point classification
Date: Mon, 22 Jan 2001 12:42:02 +0100 [thread overview]
Message-ID: <14956.7306.706689.299369@akasha.ijm.jussieu.fr> (raw)
Hello,
Is there a way to test whether a float has value 'nan' or 'inf' ? I
didn't find in the standard library the equivalent of libc functions
isfinite() or isnan() (those are macros I think).
I think that in C you can test if a float is nan by comparing it
with itself. It seems to work in OCaml too :
Objective Caml version 3.00
# let a = 0. /. 0. ;;
val a : float = nan
# a = a ;;
- : bool = false
Is it correct ? What about 'inf' ?
Olivier
next reply other threads:[~2001-01-22 21:58 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-01-22 11:42 Olivier Andrieu [this message]
2001-01-25 16:05 ` Xavier Leroy
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=14956.7306.706689.299369@akasha.ijm.jussieu.fr \
--to=andrieu@oxygene.ijm.jussieu.fr \
--cc=caml-list@inria.fr \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).