(************************************************************************)
(* * The Coq Proof Assistant / The Coq Development Team *)
(* v * Copyright INRIA, CNRS and contributors *)
(* <O___,, * (see version control and CREDITS file for authors & dates) *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(* * (see LICENSE file for the text of the license) *)
(************************************************************************)
include Float64_common
let mul (x : float) (y : float) : float = x *. y
[@@ocaml.inline always]
let add (x : float) (y : float) : float = x +. y
[@@ocaml.inline always]
let sub (x : float) (y : float) : float = x -. y
[@@ocaml.inline always]
let div (x : float) (y : float) : float = x /. y
[@@ocaml.inline always]
let sqrt (x : float) : float = sqrt x
[@@ocaml.inline always]
(*** Test at runtime that no harmful double rounding seems to
be performed with an intermediate 80 bits representation (x87). *)
let () =
let b = ldexp 1. 53 in
let s = add 1. (ldexp 1. (-52)) in
if add b s <= b || add b 1. <> b || ldexp 1. (-1074) <= 0. then
failwith "Detected non IEEE-754 compliant architecture (or wrong \
rounding mode). Use of Float is thus unsafe."