Date: Thu, 11 Jan 2001 22:06:41 +0200
From: "Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il>
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To: Morten Welinder <terra AT diku DOT dk>
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In-reply-to: <20010111180416.8986.qmail@tyr.diku.dk> (message from Morten
	Welinder on 11 Jan 2001 18:04:16 -0000)
Subject: Re: Weird results of log( -1.0 ) with libm.a and without libm.a (fwd)
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> Date: 11 Jan 2001 18:04:16 -0000
> From: Morten Welinder <terra AT diku DOT dk>
> 
> >From Solaris man page (a generally very good source):
> 
>      If x is NaN, NaN is returned.
> 
>      If x is less than 0, -HUGE_VAL or NaN is returned and  errno
>      is set to EDOM.
> 
>      If x is 0, -HUGE_VAL is returned and errno  may  be  set  to
>      ERANGE.

Thanks, Morten.  I suspected this is how most other Unix systems
behave.  libm is very religious in following these conventions.