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Re: [Gcl-devel] [Maxima] Out of range floating point number determinatio

From: Camm Maguire
Subject: Re: [Gcl-devel] [Maxima] Out of range floating point number determination
Date: Fri, 24 Aug 2012 17:57:00 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.2 (gnu/linux)


Raymond Toy <address@hidden> writes:

> I think ia32 and x86_64 are the same.  You may need to detect whether you're 
> using x87 instructions or sse2 instructions.  Or you can do what cmucl
> does which is clear the bits from both control words. And even if your are 
> compiling for sse, there's no guarantee that some library routine
> somewhere isn't using x87 internally.

What is the canonical way to detect if the sse instructions are
supported on the running cpu?  Or does one not bother these days?

Take care,
Camm Maguire                                        address@hidden
"The earth is but one country, and mankind its citizens."  --  Baha'u'llah

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