Message-ID: <444C00C4.1000402@doc.ic.ac.uk>
Date: Sun, 23 Apr 2006 23:33:40 +0100
From: Andrew Cheadle <amc4 AT doc DOT ic DOT ac DOT uk>
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Subject: Processor rounding modes
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Hi all,

Appologies, this is a question that keeps cropping up and the
answer seems to continue to be "it's not implemented, we'd
welcome a patch though". Could you please verify this:

I'm trying to get a version of some software running under Cygwin
and I'm having real problems in finding routines that directly interface
to the floating point processor rounding modes. I have code for
different architectures that use fpu_control.h, ieeefp.h, fenv.h and 
WIN32 float.h. However, for various reasons, I need cygwin's runtime 
library environment and can't use the native Win32 port nor the mingw 
runtime.

I keep seeing posts asking about fpu_control.h and answers saying it's
not implemented for Cygwin. Then I see that ieeefp.h has prototypes 
declarations for fpsetround and friends but there is no library to link 
with (AFAICT). Is this correct, is there a way to do this under
Cygwin or is Gary Polhill's library (announced 
http://sourceware.org/ml/cygwin/2004-06/msg00037.html) still the only way?

Many thanks for any assistance.

Kind regards

Andy

-- 
*********************************************************************
*  Andrew Cheadle                    email:  a DOT cheadle AT doc DOT ic DOT ac DOT uk *
*  Department of Computing           http://www.doc.ic.ac.uk/~amc4/ *
*  Imperial College London                                          *
*********************************************************************


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