[QTI] duration data type

[Jonathon Hare]

Hi,

I would have thought that a duration should be stored as a float to  
fit in with the other bits of the spec (that's how we've implemented  
anyway):

 From baseType: A duration value specifies a distance (in time)  
between two time points. In other words, a time period as defined by  
[ISO8601]. Durations are measured in seconds and may have a fractional  
part.
 From PrintedVariable: Variables of baseType duration are treated as  
floats, representing the duration in seconds.

-Jon


On 4 Dec 2008, at 17:34, Daniel Cassidy wrote:

> Hi List,
>
> The QTI 2.1 spec says:
>
>> Datatype: duration
>>
>> A period of time, measured in seconds.
>
> I'm guessing that this is intended to be a 32-bit unsigned integer,
> and that any sane integer value is probably safe for use in most
> (all?) delivery engines.
>
> However, it would be nice if the spec could be specific on this point,
> so I can be *sure*.
>
> (or am I missing something?)
>
> Dan.
>
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