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Re: [jlreq] Quarter Millimeter

From: Asmus Freytag <asmusf@ix.netcom.com>
Date: Wed, 30 Nov 2011 12:29:59 -0800
Message-ID: <4ED69247.8080805@ix.netcom.com>
To: John Cowan <cowan@mercury.ccil.org>
CC: Koji Ishii <kojiishi@gluesoft.co.jp>, "Martin J. Dürst" <duerst@it.aoyama.ac.jp>, Christoph Päper <christoph.paeper@crissov.de>, "public-i18n-cjk@w3.org" <public-i18n-cjk@w3.org>
On 11/30/2011 12:21 PM, John Cowan wrote:
> Asmus Freytag scripsit:
>
>> The Q would be about 3/4 pts. (Difference is about 5%). If I have an
>> implementation that works its math in quarter points (smallest unit that
>> I've come across in run-of-the-mill software) then that could be your
>> error. Is that something that real implementations do, or do they work
>> with much higher internal precision?
> TeX's internal unit is the scaled point, which is 1/65536 of a TeX point.
> TeX points are exactly 1/72.27 inches, where an inch is exactly 25.4 mm.
> They are a very close approximation to the traditional American point,
> and are slightly smaller than PostScript points, which are 1/72 inches.
>
Right, even with an internal unit of 1/32 point you'd get a fairly 
decent representation of a Q.
So Tex is 256 times better :)

A./
Received on Wednesday, 30 November 2011 20:30:37 UTC

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