malachite_base/num/arithmetic/
wrapping_mul.rs

1// Copyright © 2025 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::num::arithmetic::traits::{WrappingMul, WrappingMulAssign};
10
11macro_rules! impl_wrapping_mul {
12    ($t:ident) => {
13        impl WrappingMul<$t> for $t {
14            type Output = $t;
15
16            /// This is a wrapper over the `wrapping_mul` functions in the standard library, for
17            /// example [this one](u32::wrapping_mul).
18            #[inline]
19            fn wrapping_mul(self, other: $t) -> $t {
20                $t::wrapping_mul(self, other)
21            }
22        }
23
24        impl WrappingMulAssign<$t> for $t {
25            /// Adds a number to another number in place, wrapping around at the boundary of the
26            /// type.
27            ///
28            /// $x \gets z$, where $z \equiv xy \mod 2^W$ and $W$ is `Self::WIDTH`.
29            ///
30            /// # Worst-case complexity
31            /// Constant time and additional memory.
32            ///
33            /// # Examples
34            /// See [here](super::wrapping_mul#wrapping_mul_assign).
35            #[inline]
36            fn wrapping_mul_assign(&mut self, other: $t) {
37                *self = self.wrapping_mul(other);
38            }
39        }
40    };
41}
42apply_to_primitive_ints!(impl_wrapping_mul);
malachite_base/num/arithmetic/wrapping_mul.rs

malachite_base/num/arithmetic/
wrapping_mul.rs
