package frama-c

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package frama-c
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Extension of Big_int compatible with Zarith.

  • since Nitrogen-20111001
type 'a formatter = Stdlib.Format.formatter -> 'a -> unit
type t = Z.t
val equal : t -> t -> bool
val compare : t -> t -> int
val le : t -> t -> bool
val ge : t -> t -> bool
val lt : t -> t -> bool
val gt : t -> t -> bool
val add : t -> t -> t
val sub : t -> t -> t
val mul : t -> t -> t
val shift_left : t -> t -> t
  • raises Invalid_argument

    if second argument (count) is negative

val shift_right : t -> t -> t
  • raises Invalid_argument

    if second argument (count) is negative

val shift_right_logical : t -> t -> t
  • raises Invalid_argument

    if any argument is negative

val logand : t -> t -> t
val logor : t -> t -> t
val logxor : t -> t -> t
val lognot : t -> t
val min : t -> t -> t
val max : t -> t -> t
val e_div : t -> t -> t

Euclidean division (that returns a positive rem). Implemented by Z.ediv

Equivalent to C division if both operands are positive. Equivalent to a floored division if b > 0 (rounds downwards), otherwise rounds upwards. Note: it is possible that e_div (-a) b <> e_div a (-b).

val e_rem : t -> t -> t

Remainder of the Euclidean division (always positive). Implemented by Z.erem

val e_div_rem : t -> t -> t * t

e_div_rem a b returns (e_div a b, e_rem a b). Implemented by Z.ediv_rem

val c_div : t -> t -> t

Truncated division towards 0 (like in C99). Implemented by Z.div

val c_rem : t -> t -> t

Remainder of the truncated division towards 0 (like in C99). Implemented by Z.rem

val c_div_rem : t -> t -> t * t

c_div_rem a b returns (c_div a b, c_rem a b). Implemented by Z.div_rem

val pgcd : t -> t -> t

pgcd v 0 == pgcd 0 v == abs v. Result is always positive

val ppcm : t -> t -> t

ppcm v 0 == ppcm 0 v == 0. Result is always positive

val cast : size:t -> signed:bool -> value:t -> t
val abs : t -> t
val neg : t -> t
val succ : t -> t
val pred : t -> t
val is_zero : t -> bool
val is_one : t -> bool
val is_even : t -> bool
val zero : t
val one : t
val two : t
val four : t
val eight : t
val sixteen : t
val thirtytwo : t
val onethousand : t
val billion_one : t
val minus_one : t
val max_int64 : t
val min_int64 : t
val two_power_32 : t
val two_power_64 : t
val length : t -> t -> t

b - a + 1

val of_int : int -> t
val of_int64 : Stdlib.Int64.t -> t
val of_int32 : Stdlib.Int32.t -> t
val to_int_exn : t -> int
  • raises Z.Overflow

    if too big

  • since 24.0-Chromium
val to_int64_exn : t -> int64
  • raises Z.Overflow

    if too big

  • since 24.0-Chromium
val to_int32_exn : t -> int32
  • raises Z.Overflow

    if too big

  • since 24.0-Chromium
val to_int_opt : t -> int option

Returns Some i if the number can be converted to an int, or None otherwise.

  • since 24.0-Chromium
val to_int64_opt : t -> int64 option

Returns Some i if the number can be converted to an int64, or None otherwise.

  • since 24.0-Chromium
val to_int32_opt : t -> int32 option

Returns Some i if the number can be converted to an int32, or None otherwise.

  • since 24.0-Chromium
val to_float : t -> float
val of_float : float -> t
val round_up_to_r : min:t -> r:t -> modu:t -> t

round_up_to_r m r modu is the smallest number n such that n>=m and n = r modulo modu

val round_down_to_r : max:t -> r:t -> modu:t -> t

round_down_to_r m r modu is the largest number n such that n<=m and n = r modulo modu

val two_power : t -> t

Computes 2^n

  • raises Z.Overflow

    for exponents greater than 1024

val two_power_of_int : int -> t

Computes 2^n

val power_int_positive_int_opt : int -> int -> t option

Exponentiation

val extract_bits : start:t -> stop:t -> t -> t
val popcount : t -> int
val hash : t -> int
val to_string : t -> string
val of_string : string -> t
  • raises Invalid_argument

    when the string cannot be parsed.

val pretty : t formatter

Prints the integer in decimal format. See also pretty_hex.

  • before 25.0-Manganese

    there was an optional hexa argument.

val pretty_hex : t formatter

Prints the integer in hexadecimal format (replaces hexa optional argument of pretty from older versions).

  • since 25.0-Manganese
val pp_bin : ?nbits:int -> ?sep:string -> t formatter

Print binary format. Digits are output by blocs of 4 bits separated by ~sep with at least ~nbits total bits. If nbits is non positive, it will be ignored.

Positive values are prefixed with "0b" and negative values are printed as their 2-complement (lnot) with prefix "1b".

val pp_hex : ?nbits:int -> ?sep:string -> t formatter

Print hexadecimal format. Digits are output by blocs of 16 bits (4 hex digits) separated by ~sep with at least ~nbits total bits. If nbits is non positive, it will be ignored.

Positive values are preffixed with "0x" and negative values are printed as their 2-complement (lnot) with prefix "1x".

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