pub trait CheckedShr<Shift = Self> {
type Output;
/// Returns checked shift-right.
/// ```
/// use traiter::numbers::CheckedShr;
/// // signed integers
/// assert_eq!(CheckedShr::checked_shr(-3i8, 0u32), Some(-3i8));
/// assert_eq!(CheckedShr::checked_shr(-3i8, 1u32), Some(-2i8));
/// assert_eq!(CheckedShr::checked_shr(-3i8, 2u32), Some(-1i8));
/// // unsigned integers
/// assert_eq!(CheckedShr::checked_shr(3u8, 0u32), Some(3u8));
/// assert_eq!(CheckedShr::checked_shr(3u8, 1u32), Some(1u8));
/// assert_eq!(CheckedShr::checked_shr(3u8, 2u32), Some(0u8));
/// ```
fn checked_shr(self, shift: Shift) -> Self::Output;
}
macro_rules! integer_checked_shr_impl {
($($integer:ty)*) => ($(
impl CheckedShr<u32> for $integer {
type Output = Option<Self>;
#[inline(always)]
fn checked_shr(self, shift: u32) -> Self::Output {
<$integer>::checked_shr(self, shift)
}
}
)*)
}
integer_checked_shr_impl!(i8 i16 i32 i64 i128 isize u8 u16 u32 u64 u128 usize);