Warp <war### [at] tagpovrayorg> wrote:
> dragonmage <dra### [at] gmailcom> wrote:
> > Does POVRay use double precision numbers anywhere in its fields or calcs?
>
>   I wonder why you think that 'double' wouldn't be the default type used
> by POV-Ray for its calculations.
In the help provided with the program:
a search on "float" reveals endless references to float,
such as: all floating point functions, vector litterals, user defined
functions,
teh machine epsilon documented is rather large, pretty muich all parameters,
such as global settings, the transformation matrix is 12 float vectors, ...
and so on.

searching on double finds much less.  though there is a para. on 3DNow which
states that POVRay needs double precision.

cheers,

chris
>
>   AFAIK the only places POV-Ray uses 'float' is in color handling (ie.
> the colors of the final image, which end up as pixels in the final image
> file) and mesh coordinates.
>
> --
>

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