Date: Thu, 29 Dec 1994 21:33:21 -0500 From: Thomas David Rivers <rivers%ponds@ncren.net> To: freebsd-questions@freebsd.org, markd@grizzly.com Subject: Re: Behavior of sqrt on errors. Message-ID: <199412300233.VAA19033@ponds.UUCP>
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>
>
> On FreeBSD,
>
> sqrt (-3.0);
>
> generates a SIGFPE. On all other systems I have encountered, it calls
> matherr with a DOMAIN error. Can anyone more knowledgeable about the
> ANSI standard comment if this correct ANSI behavior or a bug?
>
> Thanks,
> Mark
>
From the sqrt(3) man page:
The sqrt() function
returns the requested square root unless an error occurs. On the VAX or
Tahoe processor an attempt to take the sqrt() of negative x causes an er-
ror; in this event, the global variable errno is set to EDOM and a re-
served operand fault is generated.
So, the man page implies this is working as designed.
- Dave Rivers -
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