malachite_nz/natural/comparison/
eq_abs_primitive_int.rs

1// Copyright © 2026 Mikhail Hogrefe
2//
3// This file is part of Malachite.
4//
5// Malachite is free software: you can redistribute it and/or modify it under the terms of the GNU
6// Lesser General Public License (LGPL) as published by the Free Software Foundation; either version
7// 3 of the License, or (at your option) any later version. See <https://www.gnu.org/licenses/>.
8
9use crate::natural::Natural;
10use malachite_base::num::comparison::traits::EqAbs;
11
12macro_rules! impl_unsigned {
13    ($t: ident) => {
14        impl EqAbs<$t> for Natural {
15            /// Determines whether the absolute values of a [`Natural`] and a primitive unsigned
16            /// integer are equal.
17            ///
18            /// Since both values are non-negative, this is the same as ordinary equality.
19            ///
20            /// # Worst-case complexity
21            /// Constant time and additional memory.
22            ///
23            /// See [here](super::eq_abs_primitive_int#eq_abs).
24            #[inline]
25            fn eq_abs(&self, other: &$t) -> bool {
26                self == other
27            }
28        }
29
30        impl EqAbs<Natural> for $t {
31            /// Determines whether the absolute values of a primitive unsigned integer and a
32            /// [`Natural`] are equal.
33            ///
34            /// Since both values are non-negative, this is the same as ordinary equality.
35            ///
36            /// # Worst-case complexity
37            /// Constant time and additional memory.
38            ///
39            /// See [here](super::eq_abs_primitive_int#eq_abs).
40            #[inline]
41            fn eq_abs(&self, other: &Natural) -> bool {
42                self == other
43            }
44        }
45    };
46}
47apply_to_unsigneds!(impl_unsigned);
48
49macro_rules! impl_signed {
50    ($t: ident) => {
51        impl EqAbs<$t> for Natural {
52            /// Determines whether the absolute values of a [`Natural`] and a primitive signed
53            /// integer are equal.
54            ///
55            /// # Worst-case complexity
56            /// Constant time and additional memory.
57            ///
58            /// See [here](super::eq_abs_primitive_int#eq_abs).
59            #[inline]
60            fn eq_abs(&self, other: &$t) -> bool {
61                *self == other.unsigned_abs()
62            }
63        }
64
65        impl EqAbs<Natural> for $t {
66            /// Determines whether the absolute values of a primitive signed integer and a
67            /// [`Natural`] are equal.
68            ///
69            /// # Worst-case complexity
70            /// Constant time and additional memory.
71            ///
72            /// See [here](super::eq_abs_primitive_int#eq_abs).
73            #[inline]
74            fn eq_abs(&self, other: &Natural) -> bool {
75                self.unsigned_abs() == *other
76            }
77        }
78    };
79}
80apply_to_signeds!(impl_signed);
malachite_nz/natural/comparison/eq_abs_primitive_int.rs

malachite_nz/natural/comparison/
eq_abs_primitive_int.rs
