From: Andreas Schwab <schwab@linux-m68k.org>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: Kernel development list <linux-kernel@vger.kernel.org>
Subject: Re: 64-bit modulus operation in a 32-bit kernel
Date: Tue, 24 Apr 2012 21:15:19 +0200 [thread overview]
Message-ID: <m2lillj60o.fsf@igel.home> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1204241347490.1511-100000@iolanthe.rowland.org> (Alan Stern's message of "Tue, 24 Apr 2012 13:50:01 -0400 (EDT)")
Alan Stern <stern@rowland.harvard.edu> writes:
> I need to compute the remainder when a 64-bit quantity is divided by a
> small value (126 in this case). The % operator doesn't work in an
> x86/32 kernel. What's the Right Way to do it?
#include <asm/div64.h>
do_div(n,base) returns the remainder.
Andreas.
--
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
prev parent reply other threads:[~2012-04-24 19:15 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-24 17:50 64-bit modulus operation in a 32-bit kernel Alan Stern
2012-04-24 18:20 ` Takashi Iwai
2012-04-24 18:57 ` Alan Stern
2012-04-24 19:15 ` Andreas Schwab [this message]
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