Library Flocq.Version

This file is part of the Flocq formalization of floating-point arithmetic in Coq:
Copyright (C) 2011-2018 Sylvie Boldo
Copyright (C) 2011-2018 Guillaume Melquiond
This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the COPYING file for more details.
Helper for detecting the version of Flocq
Require Import BinNat.
Require Import Ascii String.

Definition Flocq_version := Eval vm_compute in
  let fix parse s major minor :=
    match s with
    | String "."%char tparse t (major × 100 + minor)%N N0
    | String h t
      parse t major (minor × 10 + N_of_ascii h - N_of_ascii "0"%char)%N
    | EmptyString ⇒ (major × 100 + minor)%N
    end in
  parse "4.2.0"%string N0 N0.