NetNews Usenet Archive 1992 #19/NN_1992_19.iso/spool/comp/sys/sgi/12966

Internet Message Format | 1992-08-27 | 1.6 KB

Path: sparky!uunet!mcsun!uknet!warwick!dcs.warwick.ac.uk!maths.warwick.ac.uk!steve
From: [e-mail] (Steve Rumsby)
Newsgroups: comp.sys.sgi
Subject: Re: gcc2.2.2 on Iris Crimson (HELP!)
Message-ID: <[e-mail]>
Date: 27 Aug 92 13:12:03 GMT
References: <[e-mail]>
Sender: [e-mail] (Network News)
Distribution: comp
Organization: Geometry Group, Maths Institute, Warwick University, UK.
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In article <[e-mail]>, [e-mail] (Takashi Totsuka) writes:
>
>     Is there anyone who has successfully installed GCC(G++)2.2.2 and
>     libg++2.2.2 on IRIS Crimson ?
>
>     I am having a strange problem with one of the test program
>     (tComplex.cc).  The sqrt() method of Complex class returns
>     different value each time it is called with the same constant
>     arguments...  Specifying -mcpu=r4000 didn't help.
>
>     I appreciate any suggestions. Thanks in advance.
>
Same things happens on a R3000 Indigo too. I finally trace the problem
to the hypot function in the C library (SGI's library, not glibc) which
was returning bizarre results, but only after printing a double on cout!
I couldn't see any way that these two functions could interfere with
each other, so I gave up at that point. If anybody has any ideas about
what might be going on, I'd love to hear them.

As above, this is all compiling libg++-2.2.2 with gcc-2.2.2.

Steve.
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