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Re: What about _FPU_IEEE?

From: Richard B. Kreckel
Subject: Re: What about _FPU_IEEE?
Date: Tue, 17 Jul 2001 15:17:50 +0200 (CEST)

On Mon, 16 Jul 2001, Andreas Jaeger wrote:
> > When trying to port something to Linux/PA I discovered that fpu_control.h
> > does not define _FPU_IEEE there.  I guess this is because _FPU_DEFAULT is
> > just as good there?  I need to set __fpu_control to _FPU_IEEE.  What is 
> > the suggested strategy on glibc?  Just use _FPU_DEFAULT if _FPU_IEEE is
> > not defined?  Is this going to give me the expected behaviour on all
> > architectures?
> You shouldn't use fpu_control.h at all, use the <fenv.h> functions,
> those are available for all architectures and most of them are
> specified by ISO C99,

Err, I need to manipulate the FPU control register, at least on i386 and
m68k.  <fenv.h> does not seem to be appropiate.  I would be happy to be
proven wrong, though...

Richard B. Kreckel

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