From: Hans Hagen <pragma@wxs.nl>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: xml and lua again
Date: Fri, 28 Oct 2011 13:42:08 +0200 [thread overview]
Message-ID: <4EAA9510.6000000@wxs.nl> (raw)
In-Reply-To: <CAG5iGsCvqZAFifzEUOaN1agXK_nvyucKgwJKQwURSzXLP4rvUg@mail.gmail.com>
> i.e it's a Lua number -- a floating point.
> So a kind of conversion can happen between a floating point and a sp
> number (which has a limited range)
> Of course Lua has its routines, but probably they differs from TeX
> If I recall correctly, both use 32 bits, but if you extend to lets say
> 48 bit then the TeX routines are not good anymore.
>
> Well, I'm not sure it's right, of course.
The lua numbers have enough precision to cast on the tex numbers (with
rounding) but in practice I don't care too much. As we have standardized
floats the behaviour is predictable. We could probably go completely
float at the tex end but too many datastructures expect an integer so
it's not worth the trouble.
Hans
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prev parent reply other threads:[~2011-10-28 11:42 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-22 16:46 Thomas A. Schmitz
2011-10-23 14:04 ` Peter Rolf
2011-10-23 14:37 ` Thomas A. Schmitz
2011-10-23 15:25 ` Peter Rolf
2011-10-23 18:15 ` Peter Rolf
2011-10-24 10:17 ` Hans Hagen
2011-10-24 12:18 ` Thomas A. Schmitz
2011-10-24 12:26 ` Hans Hagen
2011-10-24 17:00 ` Thomas A. Schmitz
2011-10-24 18:48 ` Hans Hagen
2011-10-25 9:43 ` Thomas A. Schmitz
2011-10-25 10:10 ` Wolfgang Schuster
2011-10-25 10:17 ` Hans Hagen
2011-10-25 10:27 ` Thomas A. Schmitz
2011-10-27 9:23 ` Thomas A. Schmitz
2011-10-27 9:53 ` Wolfgang Schuster
2011-10-27 10:32 ` Thomas A. Schmitz
2011-10-27 11:05 ` Hans Hagen
2011-10-28 6:23 ` Thomas A. Schmitz
2011-10-28 6:37 ` luigi scarso
2011-10-28 6:43 ` luigi scarso
2011-10-28 6:44 ` Patrick Gundlach
2011-10-28 6:55 ` Thomas A. Schmitz
2011-10-28 8:35 ` Wolfgang Schuster
2011-10-28 8:59 ` Hans Hagen
2011-10-28 8:56 ` Hans Hagen
2011-10-28 10:48 ` Thomas A. Schmitz
2011-10-28 11:23 ` luigi scarso
2011-10-28 11:42 ` Hans Hagen [this message]
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