How do I define an int64 in OCaml?

Question

let i = 32 will give me a int32.

What if I want to define a int64?

Answer 1

let i = 32L 

(Postfix L for int64 literals introduced in Objective Caml 3.07)

and use module Int64: http://caml.inria.fr/pub/docs/manual-ocaml/libref/Int64.html You should really use google as well...