module Random: sig end
Pseudo-random number generator (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
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 230.
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. If bound is 0, the result
is 0.
val bool : unit -> bool
Random.bool () returns true or false with probability 0.5 each.
type state
Values of this type are used to store the current state of the
generator.
val get_state : unit -> state
Returns the current state of the generator. This is useful for
checkpointing computations that use the PRNG.
val set_state : state -> unit
Resets the state of the generator to some previous state returned by
Random.get_state.