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Date: Tue, 13 Jan 2004 21:55:57 +0200
From: "Eli Zaretskii" <eliz AT elta DOT co DOT il>
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To: Kbwms AT aol DOT com
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In-reply-to: <5f.43e4a8d9.2d356a0e@aol.com> (Kbwms@aol.com)
Subject: Re: C99 Functions Under Development and Checkout
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> From: Kbwms AT aol DOT com
> Date: Tue, 13 Jan 2004 10:34:38 EST
> 
> So, C99 says return a range error if the rounded result is too large,
> whereas Posix requires a domain error regardless of the kind of error.

No, C99 says a range error _may_ occur.

> Which way is the right way?  The code, written a couple of years ago,
> proceeds as follows:
> 
> If the argument is a NaN, set domain error [EDOM].  If the rounded
> result is too large (including +- Inf), set range error [ERANGE].
> In both cases, the invalid floating-point exception is raised.

Sounds okay to me, except that perhaps we should set errno to EDOM in
all these cases.

Can somebody see what does glibc do in these situations?