1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
use crate::num::arithmetic::traits::{WrappingDiv, WrappingDivAssign};
macro_rules! impl_wrapping_div {
($t:ident) => {
impl WrappingDiv<$t> for $t {
type Output = $t;
/// This is a wrapper over the `wrapping_div` functions in the standard library, for
/// example [this one](u32::wrapping_div).
#[inline]
fn wrapping_div(self, other: $t) -> $t {
$t::wrapping_div(self, other)
}
}
impl WrappingDivAssign<$t> for $t {
/// Divides a number by another number in place, wrapping around at the boundary of the
/// type.
///
/// Wrapping only occurs when `Self` is signed, `self` is `Self::MIN`, and `other` is
/// -1. The "actual" result, `-Self::MIN`, can't be represented and is wrapped back to
/// `Self::MIN`.
///
/// # Worst-case complexity
/// Constant time and additional memory.
///
/// # Examples
/// See [here](super::wrapping_div#wrapping_div_assign).
#[inline]
fn wrapping_div_assign(&mut self, other: $t) {
*self = self.wrapping_div(other);
}
}
};
}
apply_to_primitive_ints!(impl_wrapping_div);