Conversions between various integer types
val int_to_int32 : int ‑> int32 option
Ocaml has the following integer types, with the following bit widths on 32-bit and 64-bit architectures.
arch arch type 32b 64b ---------------------- int 31 63 (32 when compiled to JavaScript) nativeint 32 64 int32 32 32 int64 64 64
In both cases, the following inequalities hold:
width(int) < width(nativeint)
&& width(int32) <= width(nativeint) <= width(int64)
The conversion functions come in one of two flavors.
If width(foo) <= width(bar) on both 32-bit and 64-bit architectures, then we have
val foo_to_bar : foo -> bar
otherwise we have
val foo_to_bar : foo -> bar option
val foo_to_bar_exn : foo -> bar
module Make_hex : functor (I : sig ... end) -> Base__.Int_intf.Hexable with type t := I.t
in the output, to_string
, of_string
, sexp_of_t
, and t_of_sexp
convert
between t
and signed hexadecimal with an optional "0x" or "0X" prefix.
val sexp_of_int_style : [ `No_underscores | `Underscores ] Base__.Import.ref
global ref affecting whether the sexp_of_t
returned by Make
is consistent with the to_string
input or the to_string_hum
output
val insert_delimiter_every : string ‑> delimiter:char ‑> chars_per_delimiter:int ‑> string
utility for defining to_string_hum on numeric types -- takes a string matching
(-|+)?0-9a-fA-F
+ and puts delimiter
every chars_per_delimiter
characters
starting from the right.