Random number generators

[Mathias Dolidon <matd@netcourrier.com>]

I know that if I initialize a given generator with a given value, that
my program is compiled by a given compiler and runs on a given machine,
the output values of the genertor will always be the sames.Let's suppose
I get 1 2 3 4 (let's don't make it complicated ;). If now I compile the
same program with another compiler or I make it run on another computer
(or both), will I still get 1 2 3 4 ? Or is this unspecified by the
language ?

Thank you,
Mathias