Int63 (base.Base_

The size of Int63 is always 63 bits. On a 64-bit platform it is just an int (63-bits), and on a 32-bit platform it is an int64 wrapped to respect the semantics of 63-bit integers.

Because Int63 has different representations on 32-bit and 64-bit platforms, marshalling Int63 will not work between 32-bit and 64-bit platforms -- unmarshal will segfault.

In 64-bit architectures, we expose type t = private int so that the compiler can omit caml_modify when dealing with record fields holding Int63.t.

Code should not explicitly make use of the private, e.g., via (i :> int), since such code will not compile on 32-bit platforms.

include Base__.Int_intf.S with type t = Base__.Int63_backend.t

type t

include sig ... end

val hash_fold_t : Base.Hash.state ‑> t ‑> Base.Hash.state

val hash : t ‑> Base.Hash.hash_value

val t_of_sexp : Base.Sexp.t ‑> t

val sexp_of_t : t ‑> Base.Sexp.t

include Base.Floatable.S with type t := t

type t

val of_float : float ‑> t

val to_float : t ‑> float

include Base.Intable.S with type t := t

type t

val of_int_exn : int ‑> t

val to_int_exn : t ‑> int

include Base.Identifiable.S with type t := t

type t

include sig ... end

val hash_fold_t : Base.Hash.state ‑> t ‑> Base.Hash.state

val hash : t ‑> Base.Hash.hash_value

val t_of_sexp : Base.Sexp.t ‑> t

val sexp_of_t : t ‑> Base.Sexp.t

include Base.Stringable.S with type t := t

type t

val of_string : string ‑> t

val to_string : t ‑> string

include Base.Comparable.S with type t := t

include Base__.Comparable_intf.Polymorphic_compare

include Base.Comparisons.Infix

type 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

val compare : t ‑> t ‑> int

compare t1 t2 returns 0 if t1 is equal to t2, a negative integer if t1 is less than t2, and a positive integer if t1 is greater than t2.

val min : t ‑> t ‑> t

val max : t ‑> t ‑> t

val ascending : t ‑> t ‑> int

ascending is identical to compare. descending x y = ascending y x. These are intended to be mnemonic when used like List.sort ~compare:ascending and List.sort ~cmp:descending, since they cause the list to be sorted in ascending or descending order, respectively.

val descending : t ‑> t ‑> int

val between : t ‑> low:t ‑> high:t ‑> bool

between t ~low ~high means low <= t <= high

val clamp_exn : t ‑> min:t ‑> max:t ‑> t

clamp_exn t ~min ~max returns t', the closest value to t such that between t' ~low:min ~high:max is true.

Raises if not (min <= max).

val clamp : t ‑> min:t ‑> max:t ‑> t Base.Or_error.t

include Base.Comparator.S with type t := t

type t

type comparator_witness

val comparator : (t, comparator_witness) Base.Comparator.comparator

include Base__.Comparable_intf.Validate with type t := t

type t

val validate_lbound : min:t Base.Maybe_bound.t ‑> t Base.Validate.check

val validate_ubound : max:t Base.Maybe_bound.t ‑> t Base.Validate.check

val validate_bound : min:t Base.Maybe_bound.t ‑> max:t Base.Maybe_bound.t ‑> t Base.Validate.check

include Base.Pretty_printer.S with type t := t

type t

val pp : Base.Formatter.t ‑> t ‑> unit

include Base.Comparable.With_zero with type t := t

type t

val validate_positive : t Base.Validate.check

val validate_non_negative : t Base.Validate.check

val validate_negative : t Base.Validate.check

val validate_non_positive : t Base.Validate.check

val is_positive : t ‑> bool

val is_non_negative : t ‑> bool

val is_negative : t ‑> bool

val is_non_positive : t ‑> bool

val sign : t ‑> Base__.Sign0.t

Returns Neg, Zero, or Pos in a way consistent with the above functions.

include Base__.Int_intf.Hexable with type t := t

type t

module Hex : sig ... end

val to_string_hum : ?⁠delimiter:char ‑> t ‑> string

delimiter is an underscore by default.

Infix operators and constants

val zero : t

val one : t

val minus_one : t

val (+) : t ‑> t ‑> t

val (-) : t ‑> t ‑> t

val (*) : t ‑> t ‑> t

val (**) : t ‑> t ‑> t

Integer exponentiation

Negation

val neg : t ‑> t

val (~-) : t ‑> t

There are two pairs of integer division and remainder functions, /% and %, and / and rem. They both satisfy the same equation relating the quotient and the remainder:

        x = (x /% y) * y + (x % y);
        x = (x /  y) * y + (rem x y);

The functions return the same values if x and y are positive. They all raise if y = 0.

The functions differ if x < 0 or y < 0.

If y < 0, then % and /% raise, whereas / and rem do not.

x % y always returns a value between 0 and y - 1, even when x < 0. On the other hand, rem x y returns a negative value if and only if x < 0; that value satisfies abs (rem x y) <= abs y - 1.

val (/%) : t ‑> t ‑> t

val (%) : t ‑> t ‑> t

val (/) : t ‑> t ‑> t

val rem : t ‑> t ‑> t

val (//) : t ‑> t ‑> float

Float division of integers.

val (land) : t ‑> t ‑> t

Same as bit_and.

val (lor) : t ‑> t ‑> t

Same as bit_or.

val (lxor) : t ‑> t ‑> t

Same as bit_xor.

val (lnot) : t ‑> t

Same as bit_not.

val (lsl) : t ‑> int ‑> t

Same as shift_left.

val (asr) : t ‑> int ‑> t

Same as shift_right.

Successor and predecessor functions

val succ : t ‑> t

val pred : t ‑> t

include Base__.Int_intf.Round with type t := t

type t

round rounds an int to a multiple of a given to_multiple_of argument, according to a direction dir, with default dir being `Nearest. round will raise if to_multiple_of <= 0.

       | `Down    | rounds toward Int.neg_infinity                          |
       | `Up      | rounds toward Int.infinity                              |
       | `Nearest | rounds to the nearest multiple, or `Up in case of a tie |
       | `Zero    | rounds toward zero                                      |

Here are some examples for round ~to_multiple_of:10 for each direction:

       | `Down    | {10 .. 19} --> 10 | { 0 ... 9} --> 0 | {-10 ... -1} --> -10 |
       | `Up      | { 1 .. 10} --> 10 | {-9 ... 0} --> 0 | {-19 .. -10} --> -10 |
       | `Zero    | {10 .. 19} --> 10 | {-9 ... 9} --> 0 | {-19 .. -10} --> -10 |
       | `Nearest | { 5 .. 14} --> 10 | {-5 ... 4} --> 0 | {-15 ... -6} --> -10 |

For convenience and performance, there are variants of round with dir hard-coded. If you are writing performance-critical code you should use these.

val round : ?⁠dir:[ `Zero | `Nearest | `Up | `Down ] ‑> t ‑> to_multiple_of:t ‑> t

val round_towards_zero : t ‑> to_multiple_of:t ‑> t

val round_down : t ‑> to_multiple_of:t ‑> t

val round_up : t ‑> to_multiple_of:t ‑> t

val round_nearest : t ‑> to_multiple_of:t ‑> t

val abs : t ‑> t

Returns the absolute value of the argument. May be negative if the input is min_value.

Exponentiation

val pow : t ‑> t ‑> t

pow base exponent returns base raised to the power of exponent. It is OK if base <= 0. pow raises if exponent < 0, or an integer overflow would occur.

Bit-wise logical operations

val bit_and : t ‑> t ‑> t

These are identical to land, lor, etc. except they're not infix and have different names.

val bit_or : t ‑> t ‑> t

val bit_xor : t ‑> t ‑> t

val bit_not : t ‑> t

val popcount : t ‑> int

Returns the number of 1 bits in the binary representation of the input.

Bit-shifting operations

The results are unspecified for negative shifts and shifts >= num_bits.

val shift_left : t ‑> int ‑> t

Shifts left, filling in with zeroes.

val shift_right : t ‑> int ‑> t

Shifts right, preserving the sign of the input.

Increment and decrement functions for integer references

val decr : t Base__.Import.ref ‑> unit

val incr : t Base__.Import.ref ‑> unit

Conversion functions to related integer types

val of_int32_exn : int32 ‑> t

val to_int32_exn : t ‑> int32

val of_int64_exn : int64 ‑> t

val to_int64 : t ‑> int64

val of_nativeint_exn : nativeint ‑> t

val to_nativeint_exn : t ‑> nativeint

val of_float_unchecked : float ‑> t

of_float_unchecked truncates the given floating point number to an integer, rounding towards zero. The result is unspecified if the argument is nan or falls outside the range of representable integers.

val num_bits : int

The number of bits available in this integer type. Note that the integer representations are signed.

val max_value : t

The largest representable integer.

val min_value : t

The smallest representable integer.

val (lsr) : t ‑> int ‑> t

Same as shift_right_logical.

val shift_right_logical : t ‑> int ‑> t

Shifts right, filling in with zeroes, which will not preserve the sign of the input.

module O : Base__.Int_intf.Operators with type t := t

A sub-module designed to be opened to make working with ints more convenient.

Arithmetic with overflow

module Overflow_exn : sig ... end

Conversion functions

val of_int : int ‑> t

val to_int : t ‑> int option

val of_int32 : Base.Int32.t ‑> t

val to_int32 : t ‑> Base.Int32.t option

val of_int64 : Base.Int64.t ‑> t option

val of_nativeint : nativeint ‑> t option

val to_nativeint : t ‑> nativeint option

Truncating conversions

These functions return the least-significant bits of the input. In cases where optional conversions return Some x, truncating conversions return x.

Module Base__.Int63

Infix operators and constants

Successor and predecessor functions

Exponentiation

Bit-wise logical operations

Bit-shifting operations

Increment and decrement functions for integer references

Conversion functions to related integer types

Arithmetic with overflow

Conversion functions

Truncating conversions

Random generation