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use crate::num::arithmetic::traits::{AbsDiff, AbsDiffAssign};
macro_rules! impl_abs_diff_unsigned {
($t:ident) => {
impl AbsDiff for $t {
type Output = $t;
/// This is a wrapper over the `abs_diff` functions in the standard library, for example
/// [this one](u32::abs_diff).
#[inline]
fn abs_diff(self, other: $t) -> $t {
self.abs_diff(other)
}
}
impl AbsDiffAssign for $t {
/// Subtracts a number by another and takes the absolute value, in place. The output
/// type is the unsigned type with the same width.
///
/// # Worst-case complexity
/// Constant time and additional memory.
///
/// # Examples
/// See [here](super::abs_diff#abs_diff_assign).
#[inline]
fn abs_diff_assign(&mut self, other: $t) {
*self = self.abs_diff(other);
}
}
};
}
apply_to_unsigneds!(impl_abs_diff_unsigned);
macro_rules! impl_abs_diff_signed {
($u:ident, $s:ident) => {
impl AbsDiff for $s {
type Output = $u;
/// This is a wrapper over the `abs_diff` functions in the standard library, for example
/// [this one](i32::abs_diff).
#[inline]
fn abs_diff(self, other: $s) -> $u {
self.abs_diff(other)
}
}
};
}
apply_to_unsigned_signed_pairs!(impl_abs_diff_signed);