pub trait Two {
const TWO: Self;
}
#[macro_export]
macro_rules! impl_two {
($t:ident < $g:ident >) => {
impl<$g: $crate::Two + Copy> $crate::Two for $t<$g> {
const TWO: Self = Self::same_components($g::TWO);
}
};
}
macro_rules! impl_base_two {
($($t:ident),* -> $v:expr) => {
$(impl Two for $t {
const TWO: Self = $v;
})*
};
}
impl_base_two!(u8, i8, u16, i16, u32, i32, u64, i64, usize, isize, u128, i128 -> 2);
impl_base_two!(f32, f64 -> 2.);