Special float values

[François Perrad]

in languages/lua/src/lib/mathx.pir, I want create numbers with special 
value (NaN & Infinity), something like :

   new $P0, 'Float'      # or 'LuaNumber'
   set $N0, 'NaN'
   set $P0, $N0
   say $P0

Is it possible ?

François.