Date: Wed, 30 Dec 2009 00:38:43 +1100 (EST) From: Ian Smith <smithi@nimnet.asn.au> To: Hajimu UMEMOTO <ume@freebsd.org> Cc: freebsd-acpi@freebsd.org Subject: Re: ACPI temperature Message-ID: <20091229234000.D81420@sola.nimnet.asn.au> In-Reply-To: <ygek4w6nfi6.wl%ume@mahoroba.org> References: <200912042337.04403.freebsd@insightbb.com> <20091208041000.1d2f75f8.taku@tackymt.homeip.net> <ygemy1th1q0.wl%ume@mahoroba.org> <20091209120838.C12012@sola.nimnet.asn.au> <ygeljhcgyzh.wl%ume@mahoroba.org> <20091210031620.V12012@sola.nimnet.asn.au> <ygek4w6nfi6.wl%ume@mahoroba.org>
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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
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