From: "Jason" <j_ring AT optusnet DOT com DOT au>
Newsgroups: comp.os.msdos.djgpp
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Subject: Re: Rounding doubles to ints
Date: Mon, 5 Jun 2000 20:24:58 +1000
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

Thanks for your help in this matter.  I've taken your suggestions on board
and because I'm not too good at assembler, I've got some research to do!

Jase.

Eli Zaretskii <eliz AT is DOT elta DOT co DOT il> wrote in message
news:200006021200 DOT PAA10793 AT alpha DOT netvision DOT net DOT il...
> > From: buers AT gmx DOT de (Dieter Buerssner)
> > Newsgroups: comp.os.msdos.djgpp
> > Date: 2 Jun 2000 10:27:00 GMT
> >
> > Eli Zaretskii wrote:
> >
> > >IIRC, the version of `rint' in libm.a rounds correctly in a way that
> > >doesn't depend on the rounding mode (and without fiddling it).
> >
> > rint() depends on the rounding mode, as it should.
>
> I now realize that my wording was inaccurate and confusing.  Sorry for
> that.
>
> What I meant to say is that it doesn't access the FPU registers to
> find out the rounding mode, and doesn't change it.
>
> > The source code
> > (that is difficult to understand), seems to do the equivalent of
> > the three-liner I posted.
>
> It's not easy to write code that knows nothing about the FP hardware
> and still works...