// Copyright © 2026 Mikhail Hogrefe
//
// This file is part of Malachite.
//
// Malachite is free software: you can redistribute it and/or modify it under the terms of the GNU
// Lesser General Public License (LGPL) as published by the Free Software Foundation; either version
// 3 of the License, or (at your option) any later version. See <https://www.gnu.org/licenses/>.
use std::ops::Sub;
pub fn checked_sub<T: Ord + Sub>(x: T, y: T) -> Option<<T as Sub>::Output> {
if x >= y { Some(x - y) } else { None }
}