Int32(3o) OCaml library Int32(3o)
NAME
Int32 - 32-bit integers.
Module
Module Int32
Documentation
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 gener-
ally 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 satisfies 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 con-
version 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, according 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 specification as Pervasives.compare . Along with the type t , this function
compare allows the module Int32 to be passed as argument to the functors Set.Make and Map.Make .
OCamldoc 2012-06-26 Int32(3o)