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(************************************************************************)
(* * The Coq Proof Assistant / The Coq Development Team *)
(* v * INRIA, CNRS and contributors - Copyright 1999-2019 *)
(* <O___,, * (see CREDITS file for the list of authors) *)
(* \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) *)
(************************************************************************)
(** Equivalent of rm -f *)
let safe_remove f =
try Unix.chmod f 0o644; Sys.remove f with _ -> ()
(** * Generate an implementation of 63-bit arithmetic *)
let ml_file_copy input output =
safe_remove output;
let i = open_in input in
let o = open_out output in
let pr s = Printf.fprintf o s in
pr "(* DO NOT EDIT THIS FILE: automatically generated by ./write_uint63.ml *)\n";
pr "(* see uint63_amd64.ml and uint63_x86.ml *)\n";
try
while true do
output_string o (input_line i); output_char o '\n'
done
with End_of_file ->
close_in i;
close_out o;
Unix.chmod output 0o444
let write_uint63 () =
ml_file_copy
(if max_int = 1073741823 (* 32-bits *) then "uint63_i386_31.ml"
else (* 64 bits *) "uint63_amd64_63.ml")
"uint63.ml"
let () = write_uint63 ()
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