module Random:`sig`

..`end`

Pseudo-random number generators (PRNG).

`val init : ``int -> unit`

Initialize the generator, using the argument as a seed. The same seed will always yield the same sequence of numbers.

`val full_init : ``int array -> unit`

Same as `Random.init`

but takes more data as seed.

`val self_init : ``unit -> unit`

Initialize the generator with a more-or-less random seed chosen in a system-dependent way.

`val bits : ``unit -> int`

Return 30 random bits in a nonnegative integer.

`val int : ``int -> int`

`Random.int bound`

returns a random integer between 0 (inclusive)
and `bound`

(exclusive). `bound`

must be more than 0 and less
than 2^{30}.

`val float : ``float -> float`

`Random.float bound`

returns a random floating-point number
between 0 (inclusive) and `bound`

(exclusive). If `bound`

is
negative, the result is negative or zero. If `bound`

is 0,
the result is 0.

`val bool : ``unit -> bool`

`Random.bool ()`

returns `true`

or `false`

with probability 0.5 each.