Int32(3) OCaml library Int32(3)NAMEInt32 - 32-bit integers.
Module
Module Int32Documentation
Module Int32
: sig end
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 2^{32.
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 : int32
The 32-bit integer 0.
val one : int32
The 32-bit integer 1.
val minus_one : int32
The 32-bit integer -1.
val neg : int32 -> int32
Unary negation.
val add : int32 -> int32 -> int32
Addition.
val sub : int32 -> int32 -> int32
Subtraction.
val mul : int32 -> int32 -> int32
Multiplication.
val div : int32 -> int32 -> int32
Integer division. Raise Division_by_zero if the second argument is
zero. This division rounds the real quotient of its arguments towards
zero, as specified for Pervasives.(/) .
val rem : int32 -> int32 -> int32
Integer remainder. If y is not zero, the result of Int32.rem x y sat‐
isfies the following property: 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 -> int32
Successor. Int32.succ x is Int32.add x Int32.one .
val pred : int32 -> int32
Predecessor. Int32.pred x is Int32.sub x Int32.one .
val abs : int32 -> int32
Return the absolute value of its argument.
val max_int : int32
The greatest representable 32-bit integer, 2^{31 - 1.
val min_int : int32
The smallest representable 32-bit integer, -2^{31.
val logand : int32 -> int32 -> int32
Bitwise logical and.
val logor : int32 -> int32 -> int32
Bitwise logical or.
val logxor : int32 -> int32 -> int32
Bitwise logical exclusive or.
val lognot : int32 -> int32
Bitwise logical negation
val shift_left : int32 -> int -> int32
Int32.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 -> int32
Int32.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 -> int32
Int32.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 -> int32
Convert the given integer (type int ) to a 32-bit integer (type int32
).
val to_int : int32 -> 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 2^{31, i.e.
the high-order bit is lost during the conversion. On 64-bit platforms,
the conversion is exact.
val of_float : float -> int32
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 [
Int32.min_int , Int32.max_int ].
val to_float : int32 -> float
Convert the given 32-bit integer to a floating-point number.
val of_string : string -> int32
Convert the given string to a 32-bit integer. The string is read in
decimal (by default) or in hexadecimal, octal or binary if the string
begins with 0x , 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 -> string
Return the string representation of its argument, in signed decimal.
val bits_of_float : float -> int32
Return the internal representation of the given float according to the
IEEE 754 floating-point 'single format' bit layout. Bit 31 of the
result represents the sign of the float; bits 30 to 23 represent the
(biased) exponent; bits 22 to 0 represent the mantissa.
val float_of_bits : int32 -> float
Return the floating-point number whose internal representation, accord‐
ing to the IEEE 754 floating-point 'single format' bit layout, is the
given int32 .
type t = int32
An alias for the type of 32-bit integers.
val compare : t -> t -> int
The comparison function for 32-bit integers, with the same specifica‐
tion as Pervasives.compare . Along with the type t , this function
compare allows the module Int32 to be passed as argument to the func‐
tors Set.Make and Map.Make .
OCamldoc 2013-10-24 Int32(3)
