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Date: Mon, 17 Mar 2003 11:06:58 -0800
From: "Randy.Dunlap" <rddunlap@osdl.org>
To: "dave" <davekern@ihug.co.nz>
Cc: linux-kernel@vger.kernel.org
Subject: Re: error using unsigned long long not working in 2.4.x
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On Mon, 17 Mar 2003 21:44:16 -0800 "dave" <davekern@ihug.co.nz> wrote:

| hi i am writing a kernel 2.4.x driver and need to do maths on 64 bit ints
| (unsigned long long)
| bcause you can not use the FPU
| but when i insmod i get the error unresolved symbol __udivdi3 i need!! 64
| bit ints

Other alternatives are search the lkml archive for a patch from
George Anzinger on 2003-mar-05,
subject: [PATCH] Functions to do easy scaled math.

or if all you need is 64-bit mul and div, and only during setup
(when speed isn't a huge factor), you could use the divrem64()
function in this sample /procfs module:
  http://www.xenotime.net/linux/procfs_ex/procdiv64.c

--
~Randy
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