Re: Lua 5.3 work1 Considering math.isinteger or type()

[Ralph Hempel <rhempel@...>]

David Demelier wrote:

> > At the moment, my preferred solution would be math.type (like io.type,
> > lpeg.type, etc.):
> > *   no new global variables
> > *   no new names
> > *   no unfamiliar calling conventions
> > *   if people remove debug functions, they probably won't make an exception
> > for harmless functions like (sub)type
> > *   the only reason to remove `math` is if you don't have floats in which
> > case this function becomes obsolete anyway
>
> Yes, math.type looks absolutely the best solution!

Actually, you don't necessarily remove math[] if you don't have floats.

For my Programmable Brick Lua (pbLua) for LEGO MINDSTORMS NXT based on 
Lua 5.2 I set the default number type to int, but implemented a single 
precision float library so that pbLua could have basic trig and log 
functions that gave single precision float output.

However, handling the float results resulted in a special userdata type 
which was a general pain in the neck to use.

I am about to build a new version based on Lus 5.3 Work 1 that will (I 
think) be a huge improvement, and will simplify the handling of mixed 
numerical types.

I'm looking forward to playing with that!

Ralph