(* This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed with this file, You can obtain one at https://mozilla.org/MPL/2.0/. *) module; proc isdigit(c: Int ) -> Int; extern; proc isalnum(c: Int) -> Int; extern; proc isalpha(c: Int) -> Int; extern; proc isspace(c: Int) -> Int; extern; end.