Re: [Caml-list] portablility of random.mli in the stdlib

[Christophe Raffalli <craff73@gmail.com>]

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Le 30/04/11 12:37, Christophe Raffalli a écrit :
> Hello,
>
> Playing with my game (see my previous post), I saw that it seems that
> the random number generator in not portable ... The same seed will not
> give the same random sequence on a 32 bits and 64 bits machine ...
>
In fact it was a change in random generator in ocaml 3.12

------------------------------------
        Objective Caml version 3.12.0+beta1

# Random.init 0;;
- : unit = ()
# Random.float 1.0;;
- : float = 0.849294619789682792
------------------------------------
        Objective Caml version 3.11.2

# Random.init 0;;
- : unit = ()
# Random.float 1.0;;
- : float = 0.454763353840783646


This means that any long living program should use its own random
generator ?

Cheers,
Christophe


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