[postgis-devel] [wktraster] Core tests failure for r5841

[strk]

On Thu, Jan 13, 2011 at 01:33:02PM +0000, Mateusz Loskot wrote:

> Once the truncation rules are defined for integral types, it should be
> not a problem to implement them. For instance, what choices we have to 
> cope with -32769 value for 16BSI?
> - cast to int16_t and document result as undefined
> - truncate towards Zero by storing SHRT_MIN (SHRT_MAX for positive)
> - wrap around
> - store NODATA value
> - ...

To keep things simple I'd always clamp any number < -32768 to -32768
and any number > 32767 to 32767.

Makes sense from a sampling point of view too after all..

--strk; 

  ()   Free GIS & Flash consultant/developer
  /\   http://strk.keybit.net/services.html