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// 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 crate::Rational;
use malachite_base::num::arithmetic::traits::{
Abs, AbsAssign, CanonicalizeUnit, CanonicalizeUnitAssign,
};
impl CanonicalizeUnit for Rational {
type Output = Self;
/// Brings a [`Rational`] into canonical unit form, taking it by value. The canonical unit form
/// of a [`Rational`] is its absolute value.
///
/// # Worst-case complexity
/// Constant time and additional memory.
///
/// # Examples
/// ```
/// use malachite_base::num::arithmetic::traits::CanonicalizeUnit;
/// use malachite_q::Rational;
///
/// assert_eq!(
/// Rational::from_signeds(-22, 7)
/// .canonicalize_unit()
/// .to_string(),
/// "22/7"
/// );
/// ```
#[inline]
fn canonicalize_unit(self) -> Self {
self.abs()
}
}
impl CanonicalizeUnit for &Rational {
type Output = Rational;
/// Brings a [`Rational`] into canonical unit form, taking it by reference. The canonical unit
/// form of a [`Rational`] is its absolute value.
///
/// # Worst-case complexity
/// $T(n) = O(n)$
///
/// $M(n) = O(n)$
///
/// where $T$ is time, $M$ is additional memory, and $n$ is `self.significant_bits()`.
///
/// # Examples
/// ```
/// use malachite_base::num::arithmetic::traits::CanonicalizeUnit;
/// use malachite_q::Rational;
///
/// assert_eq!(
/// (&Rational::from_signeds(-22, 7))
/// .canonicalize_unit()
/// .to_string(),
/// "22/7"
/// );
/// ```
#[inline]
fn canonicalize_unit(self) -> Rational {
self.abs()
}
}
impl CanonicalizeUnitAssign for Rational {
/// Replaces a [`Rational`] with its canonical unit form. The canonical unit form of a
/// [`Rational`] is its absolute value.
///
/// # Worst-case complexity
/// Constant time and additional memory.
///
/// # Examples
/// ```
/// use malachite_base::num::arithmetic::traits::CanonicalizeUnitAssign;
/// use malachite_q::Rational;
///
/// let mut x = Rational::from_signeds(-22, 7);
/// x.canonicalize_unit_assign();
/// assert_eq!(x.to_string(), "22/7");
/// ```
#[inline]
fn canonicalize_unit_assign(&mut self) {
self.abs_assign();
}
}