Module Int

module Int: sig .. end

Integer values.

Integers are Sys.int_size bits wide and use two's complement representation. All operations are taken modulo 2^Sys.int_size. They do not fail on overflow.

Since 4.08

Integers

type t = int

The type for integer values.

val zero : int

zero is the integer 0.

val one : int

one is the integer 1.

val minus_one : int

minus_one is the integer -1.

val neg : int -> int

neg x is ~-x.

val add : int -> int -> int

add x y is the addition x + y.

val sub : int -> int -> int

sub x y is the subtraction x - y.

val mul : int -> int -> int

mul x y is the multiplication x * y.

val div : int -> int -> int

div x y is the division x / y. See (/) for details.

val rem : int -> int -> int

rem x y is the remainder x mod y. See (mod) for details.

val succ : int -> int

succ x is add x 1.

val pred : int -> int

pred x is sub x 1.

val abs : int -> int

abs x is the absolute value of x. That is x if x is positive and neg x if x is negative. Warning. This may be negative if the argument is Int.min_int.

val max_int : int

max_int is the greatest representable integer, 2{^[Sys.int_size - 1]} - 1.

val min_int : int

min_int is the smallest representable integer, -2{^[Sys.int_size - 1]}.

val logand : int -> int -> int

logand x y is the bitwise logical and of x and y.

val logor : int -> int -> int

logor x y is the bitwise logical or of x and y.

val logxor : int -> int -> int

logxor x y is the bitwise logical exclusive or of x and y.

val lognot : int -> int

lognot x is the bitwise logical negation of x.

val shift_left : int -> int -> int

shift_left x n shifts x to the left by n bits. The result is unspecified if n < 0 or n > Sys.int_size.

val shift_right : int -> int -> int

shift_right x n shifts x to the right by n bits. This is an arithmetic shift: the sign bit of x is replicated and inserted in the vacated bits. The result is unspecified if n < 0 or n > Sys.int_size.

val shift_right_logical : int -> int -> int

shift_right x n shifts x to the right by n bits. This is a logical shift: zeroes are inserted in the vacated bits regardless of the sign of x. The result is unspecified if n < 0 or n > Sys.int_size.

Predicates and comparisons

val equal : int -> int -> bool

equal x y is true iff x = y.

val compare : int -> int -> int

compare x y is compare x y but more efficient.

Converting

val to_float : int -> float

to_float x is x as a floating point number.

val of_float : float -> int

of_float x truncates x to an integer. The result is unspecified if the argument is nan or falls outside the range of representable integers.

val to_string : int -> string

to_string x is the written representation of x in decimal.

The present documentation is copyright Institut National de Recherche en Informatique et en Automatique (INRIA). A complete version can be obtained from this page.