Re: [jlreq] Quarter Millimeter

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