module Int32:32-bit integers.sig..end
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.
val zero : int32val one : int32val minus_one : int32val neg : int32 -> int32val add : int32 -> int32 -> int32val sub : int32 -> int32 -> int32val mul : int32 -> int32 -> int32val div : int32 -> int32 -> int32Division_by_zero if the second
argument is zero. This division rounds the real quotient of
its arguments towards zero, as specified for (/).val rem : int32 -> int32 -> int32y is not zero, the result
of Int32.rem x y satisfies the following properties:
Int32.zero <= Int32.rem x y < Int32.abs y and
x = Int32.add (Int32.mul (Int32.div x y) y) (Int32.rem x y).
If y = 0, Int32.rem x y raises Division_by_zero.val succ : int32 -> int32Int32.succ x is Int32.add x Int32.one.val pred : int32 -> int32Int32.pred x is Int32.sub x Int32.one.val abs : int32 -> int32val max_int : int32val min_int : int32val logand : int32 -> int32 -> int32val logor : int32 -> int32 -> int32val logxor : int32 -> int32 -> int32val lognot : int32 -> int32val shift_left : int32 -> int -> int32Int32.shift_left x y shifts x to the left by y bits.
The result is unspecified if y < 0 or y >= 32.val shift_right : int32 -> int -> int32Int32.shift_right x y shifts x to the right by y bits.
This is an arithmetic shift: the sign bit of x is replicated
and inserted in the vacated bits.
The result is unspecified if y < 0 or y >= 32.val shift_right_logical : int32 -> int -> int32Int32.shift_right_logical x y shifts x to the right by y bits.
This is a logical shift: zeroes are inserted in the vacated bits
regardless of the sign of x.
The result is unspecified if y < 0 or y >= 32.val of_int : int -> int32int) to a 32-bit integer (type int32).val to_int : int32 -> intint32) 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_float : float -> int32Int32.min_int, Int32.max_int].val to_float : int32 -> floatval of_string : string -> int320x, 0o or 0b
respectively.
Raise Failure "int_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 to_string : int32 -> stringval bits_of_float : float -> int32val float_of_bits : int32 -> floatint32.typet =int32
val compare : t -> t -> int