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
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