In the caml-light documentation, the Num_of_float function exist : 
http://caml.inria.fr/pub/docs/manual-caml-light/node18.html
But in the source code, the Num_of_float function is disable with no 
real comment :
ocaml-3.10.2/otherlibs/num/num.ml   line 364
It look like the problem is from the ratio_of_float function witch has 
also been disable :
ocaml-3.10.2/otherlibs/num/ratio.ml line 568

I would like to know why this two function have been disable, if some 
replacement exist, or if I will have to recode it.

Thanks in advance

-- 
Renaud CLAVEL