package containers

  1. Overview
  2. Docs
package containers
Legend:
Library
Module
Module type
Parameter
Class
Class type

Int32

Helpers for 32-bit integers.

This module provides operations on the type int32 of signed 32-bit integers. Unlike the built-in int type, the type int32 is guaranteed to be exactly 32-bit wide on all platforms. All arithmetic operations over int32 are taken modulo 232.

Performance notice: values of type int32 occupy more memory space than values of type int, and arithmetic operations on int32 are generally slower than those on int. Use int32 only when the application requires exact 32-bit arithmetic.

  • since 2.1
include module type of struct include Stdlib.Int32 end
val zero : int32
val one : int32
val minus_one : int32
val neg : int32 -> int32
val add : int32 -> int32 -> int32
val sub : int32 -> int32 -> int32
val mul : int32 -> int32 -> int32
val div : int32 -> int32 -> int32
val rem : int32 -> int32 -> int32
val succ : int32 -> int32
val pred : int32 -> int32
val abs : int32 -> int32
val max_int : int32
val min_int : int32
val logand : int32 -> int32 -> int32
val logor : int32 -> int32 -> int32
val logxor : int32 -> int32 -> int32
val lognot : int32 -> int32
val shift_left : int32 -> int -> int32
val shift_right : int32 -> int -> int32
val shift_right_logical : int32 -> int -> int32
val bits_of_float : float -> int32
val float_of_bits : int32 -> float
type t = int32
val compare : t -> t -> int
val format : string -> int32 -> string
module Infix : sig ... end
include module type of Infix
val (+) : t -> t -> t
val (-) : t -> t -> t
val (~-) : t -> t
val (*) : t -> t -> t
val (/) : t -> t -> t
val (mod) : t -> t -> t
val (land) : t -> t -> t
val (lor) : t -> t -> t
val (lxor) : t -> t -> t
val lnot : t -> t
val (lsl) : t -> int -> t
val (lsr) : t -> int -> t
val (asr) : t -> int -> t
val (=) : t -> t -> bool
val (<>) : t -> t -> bool
val (>) : t -> t -> bool
val (>=) : t -> t -> bool
val (<=) : t -> t -> bool
val (<) : t -> t -> bool
val equal : t -> t -> bool

The equal function for 32-bit integers. Like Pervasives.(=)xy).

val hash : t -> int

Like Pervasives.abs(to_intx).

Conversion

val to_int : t -> int

Convert the given 32-bit integer (type int32) to an integer (type int). On 32-bit platforms, the 32-bit integer is taken modulo 231, i.e. the high-order bit is lost during the conversion. On 64-bit platforms, the conversion is exact.

val of_int : int -> t

Alias to Int32.of_int.

val to_float : t -> float

Convert the given 32-bit integer to a floating-point number.

val of_float : float -> t

Alias to Int32.of_float. Convert the given floating-point number to a 32-bit integer, discarding the fractional part (truncate towards 0). The result of the conversion is undefined if, after truncation, the number is outside the range [CCInt32.min_int, CCInt32.max_int].

val to_string : t -> string

Return the string representation of its argument, in signed decimal.

val of_string_exn : string -> t

Alias to Int32.of_string. Convert the given string to a 32-bit integer. The string is read in decimal (by default, or if the string begins with 0u) or in hexadecimal, octal or binary if the string begins with 0x, 0o or 0b respectively.

The 0u prefix reads the input as an unsigned integer in the range [0, 2*CCInt32.max_int+1]. If the input exceeds CCInt32.max_int it is converted to the signed integer CCInt32.min_int + input - CCInt32.max_int - 1.

The _ (underscore) character can appear anywhere in the string and is ignored. Raise Failure "Int32.of_string" if the given string is not a valid representation of an integer, or if the integer represented exceeds the range of integers representable in type int32.

val of_string : string -> t option

Safe version of of_string_exn. Like of_string_exn, but return None instead of raising.

val of_string_opt : string -> t option

Alias to of_string.

OCaml

Innovation. Community. Security.

GitHub Discord Twitter Peertube RSS
About
Changelog Releases Industrial Users Academic Users Why OCaml
Ecosystem
Packages Community Events OCaml Planet Jobs
Resources
Install OCaml Get Started Platform Tools Language Manual Standard Library API Books Exercises Papers OCaml Playground Logo
Policies
Carbon Footprint Governance Privacy Code of Conduct