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Re: [SVGMobile12] Comments: Basic Data Types and Color Keywords

From: Chris Lilley <chris@w3.org>
Date: Thu, 3 Nov 2005 10:24:38 +0100
Message-ID: <1294229249.20051103102438@w3.org>
To: T Rowley <tor@cs.brown.edu>
Cc: www-svg@w3.org

On Thursday, May 19, 2005, 12:53:53 AM, T wrote:

TR> 4.1

TR> "... range for a <integer> -32,767 to 32,767"

TR> s/a/an/

TR> Curious selection for the range, given that a signed 16-bit value 
TR> usually ranges from -32768 to 32767.

We agree that this should be *an* <integer> and that the range is -32768
to 32767; we have fixed the spec.

TR> Both <integer> and <number> (and dependent types) have a restricted 
TR> range.  Does this mean that an implementation must be able to correctly 
TR> render all input with values within that range, even though intermediate
TR> internal calculation could exceed the given ranges?

No. Note that this is a restriction on content, not on implementations.
Content that uses values outside this range is not conformant and will
not necessarily have the values preserved accurately by all

Implementations necessarily need to use higher precision internally to
avoid cumulative round off error.

 Chris Lilley                    mailto:chris@w3.org
 Chair, W3C SVG Working Group
 W3C Graphics Activity Lead
 Co-Chair, W3C Hypertext CG
Received on Thursday, 3 November 2005 09:24:40 UTC

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