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Date:      Mon, 29 Dec 2003 23:16:31 -0600
From:      Dan Nelson <dnelson@allantgroup.com>
To:        Nigel Weeks <nigel@e-easy.com.au>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: Is it true?...
Message-ID:  <20031230051631.GA64644@dan.emsphone.com>
In-Reply-To: <00b401c3ce8a$9f447ba0$030aa8c0@corp.eeasy.com.au>
References:  <00b401c3ce8a$9f447ba0$030aa8c0@corp.eeasy.com.au>

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In the last episode (Dec 30), Nigel Weeks said:
> If I have 'MATH_EMULATE' in my kernel, will it:
> 
> A. Detect that the processor has a hardware FPU, and use that instead
> B. Use the software one, ignoring the hardware FPU?
> 
> (Hopefully the latter - a performance jump will be nice...)

The former.  Hardware FPU is much faster than software emulation. 
MATH_EMULATE is only necessary for CPUs with no hardware FP at all
(386sx or possibly embedded 486-class CPUs).

-- 
	Dan Nelson
	dnelson@allantgroup.com



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