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Date: Wed, 30 Dec 2009 00:38:43 +1100 (EST)
From: Ian Smith <smithi@nimnet.asn.au>
To: Hajimu UMEMOTO <ume@freebsd.org>
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Cc: freebsd-acpi@freebsd.org
Subject: Re: ACPI temperature
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On Tue, 29 Dec 2009, Hajimu UMEMOTO wrote:
 > Hi,
 > 
 > Sorry for my late reply.

Hi, no worries, I'd forgotten about it :)

 > >>>>> On Thu, 10 Dec 2009 03:27:21 +1100 (EST)
 > >>>>> Ian Smith <smithi@nimnet.asn.au> said:
 > 
 > smithi> Ah, so then units are in tenths of a degree Kelvin?  Any special reason 
 > smithi> to prefer not showing it with printf("%.1fK", mv / 10); like the others?
 > 
 > Yes, units are in tenths of a degree Kelvin.
 > The kernel holds the value and the sysctl(2) returns it in tenths of a
 > degree Kelvin as integer.  It is better having the option to not
 > convert the integer value to the float value, IMHO.
 > And, when the temperature value ends in neither "C" nor "F", sysctl(8)
 > accepts it in tenths of a degree Kelvin.

Printing the integer sounds good, it's the internal unit as you say, but 
then the 'K' unit seems misleading?  Would 'deciKelvin' be the correct 
unit for a tenth of a degree K?  'dK' maybe?

I'm probably being way too fussy, but 'C' and 'F' denote degrees so 
usually 'K' may be assumed to denote degrees also.  Not a big deal!

 > http://www.imasy.org/~ume/

Did some of your passive cooling code there get committed?

Respect,

Ian