From: f97stdi@dd.chalmers.se (Staffan Dittmer)
Subject: Re: Catching NaN .. not a number
Date: 5 May 2001 18:28:43 GMT
Date: 2001-05-05T18:28:43+00:00 [thread overview]
Message-ID: <9d1gor$4l2$1@eol.dd.chalmers.se> (raw)
In-Reply-To: slrn9f8fv0.17m.randhol+abuse@kiuk0156.chembio.ntnu.no
In article <slrn9f8fv0.17m.randhol+abuse@kiuk0156.chembio.ntnu.no>,
randhol+abuse@pvv.org (Preben Randhol) writes:
>When you say calculating factorial, do you use integer?
No, long_float. Works up to ~ 170! for me, at least I believe so....
> For floating-point, GNAT has the `Machine_Overflows'
> attribute set to `False' and the normal mode of operation is to
> generate IEEE NaN and infinite values on overflow
>
Ok, so since I'm using Gnat and long_floats, I would expect a NaN on
overflow.
Is NaN a value in itself? Is it possible to do a check like
if result = NaN then ... ?
/ Staffan Dittmer
next prev parent reply other threads:[~2001-05-05 18:28 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-05-05 17:46 Catching NaN .. not a number Staffan Dittmer
2001-05-05 17:58 ` Preben Randhol
2001-05-05 18:28 ` Staffan Dittmer [this message]
2001-05-05 21:50 ` Keith Thompson
2001-05-07 21:40 ` Stephen Leake
2001-05-08 1:37 ` David C. Hoos, Sr.
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