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From: Brian Gerst <bgerst@didntduck.org>
To: Luciano Miguel Ferreira Rocha <luciano@lsd.di.uminho.pt>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Interrupt doesn't make it to the 8259 on a ASUS P4PE mobo
Date: Tue, 15 Jul 2003 14:24:41 -0400	[thread overview]
Message-ID: <3F1446E9.8040409@didntduck.org> (raw)
In-Reply-To: <20030715175909.GA17226@lsd.di.uminho.pt>

Luciano Miguel Ferreira Rocha wrote:
> On Tue, Jul 15, 2003 at 01:06:19PM -0400, Brian Gerst wrote:
> 
>>Use HZ/2 instead.  GCC doesn't optimize floating point constants to the 
>>same degree it does integers, because it doesn't know what mode 
>>(rounding, precision) the FPU is in.
> 
> 
> Isn't (HZ >> 1) better?

Same thing.  GCC knows that division by a power of 2 is just a shift.

--
				Brian Gerst


  reply	other threads:[~2003-07-15 18:10 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <m3el0stw23.fsf@averell.firstfloor.org>
2003-07-15 16:14 ` Kathy Frazier
2003-07-15 15:31   ` Richard B. Johnson
2003-07-15 15:58     ` SCSI ATA driver in 2.4.22 ? Jeff Mock
2003-07-15 16:14       ` Jeff Garzik
2003-07-15 17:06   ` Interrupt doesn't make it to the 8259 on a ASUS P4PE mobo Brian Gerst
2003-07-15 17:43     ` Jamie Lokier
2003-07-15 17:59     ` Luciano Miguel Ferreira Rocha
2003-07-15 18:24       ` Brian Gerst [this message]
2003-07-15 18:44         ` Alan Cox
2003-07-15 19:44           ` Jamie Lokier
2003-07-20 21:04           ` Riley Williams
2003-07-20 22:25             ` Jeremy Fitzhardinge
     [not found] <Pine.LNX.4.53.0307141833190.4354@chaos>
2003-07-15 16:52 ` Kathy Frazier
2003-07-14 21:35 Kathy Frazier

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