mirror of
https://github.com/c-cube/ocaml-containers.git
synced 2025-12-06 11:15:31 -05:00
7a328425b5
Changed author name in CCFloat licenses, added epsilon constant for Pervasives.epsilon_float
88 lines
2.7 KiB
OCaml
88 lines
2.7 KiB
OCaml
(*
|
|
copyright (c) 2014, Carmelo Piccione
|
|
all rights reserved.
|
|
|
|
redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are met:
|
|
|
|
redistributions of source code must retain the above copyright notice, this
|
|
list of conditions and the following disclaimer. redistributions in binary
|
|
form must reproduce the above copyright notice, this list of conditions and the
|
|
following disclaimer in the documentation and/or other materials provided with
|
|
the distribution.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
|
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*)
|
|
|
|
type t = float
|
|
type fpclass = Pervasives.fpclass
|
|
|
|
let nan = Pervasives.nan
|
|
|
|
let infinity = Pervasives.infinity
|
|
let neg_infinity = Pervasives.neg_infinity
|
|
|
|
let max_value = infinity
|
|
let min_value = neg_infinity
|
|
|
|
let max_finite_value = Pervasives.max_float
|
|
|
|
let epsilon = Pervasives.epsilon_float
|
|
|
|
let is_nan x = (x : t) <> x
|
|
|
|
let add = (+.)
|
|
let sub = (-.)
|
|
let neg = (~-.)
|
|
let abs = Pervasives.abs_float
|
|
let scale = ( *. )
|
|
|
|
let min (x : t) y =
|
|
if is_nan x || is_nan y then nan
|
|
else if x < y then x else y
|
|
|
|
let max (x : t) y =
|
|
if is_nan x || is_nan y then nan
|
|
else if x > y then x else y
|
|
|
|
let equal (a:float) b = a=b
|
|
|
|
let hash = Hashtbl.hash
|
|
let compare (a:float) b = Pervasives.compare a b
|
|
|
|
type 'a printer = Buffer.t -> 'a -> unit
|
|
type 'a formatter = Format.formatter -> 'a -> unit
|
|
type 'a random_gen = Random.State.t -> 'a
|
|
|
|
let pp buf = Printf.bprintf buf "%f"
|
|
let print fmt = Format.pp_print_float fmt
|
|
|
|
let sign (a:float) =
|
|
if a < 0.0 then -1
|
|
else if a > 0.0 then 1
|
|
else 0
|
|
|
|
let to_int (a:float) = Pervasives.int_of_float a
|
|
let of_int (a:int) = Pervasives.float_of_int a
|
|
|
|
let to_string (a:float) = Pervasives.string_of_float a
|
|
let of_string (a:string) = Pervasives.float_of_string a
|
|
|
|
|
|
let random n st = Random.State.float st n
|
|
let random_small = random 100.0
|
|
let random_range i j st = i +. random (j-.i) st
|
|
|
|
let equal_precision ~epsilon a b = abs_float (a-.b) < epsilon
|
|
|
|
let classify = Pervasives.classify_float
|
|
|