// SPDX-License-Identifier: GPL-2.0 //! Additional numerical features for the kernel. use core::ops; pub mod bounded;pub mod casts; pub use bounded::*; /// Designates unsigned primitive types.pub enum Unsigned {} /// Designates signed primitive types.pub enum Signed {} /// Describes core properties of integer types.pub trait Integer:    Sized    + Copy    + Clone    + PartialEq    + Eq    + PartialOrd    + Ord    + ops::Add<Output = Self>    + ops::AddAssign    + ops::Sub<Output = Self>    + ops::SubAssign    + ops::Mul<Output = Self>    + ops::MulAssign    + ops::Div<Output = Self>    + ops::DivAssign    + ops::Rem<Output = Self>    + ops::RemAssign    + ops::BitAnd<Output = Self>    + ops::BitAndAssign    + ops::BitOr<Output = Self>    + ops::BitOrAssign    + ops::BitXor<Output = Self>    + ops::BitXorAssign    + ops::Shl<u32, Output = Self>    + ops::ShlAssign<u32>    + ops::Shr<u32, Output = Self>    + ops::ShrAssign<u32>    + ops::Not{    /// Whether this type is [`Signed`] or [`Unsigned`].    type Signedness;     /// Number of bits used for value representation.    const BITS: u32;} macro_rules! impl_integer {    ($($type:ty: $signedness:ty), *) => {        $(        impl Integer for $type {            type Signedness = $signedness;             const BITS: u32 = <$type>::BITS;        }        )*    };} impl_integer!(    u8: Unsigned,    u16: Unsigned,    u32: Unsigned,    u64: Unsigned,    u128: Unsigned,    usize: Unsigned,    i8: Signed,    i16: Signed,    i32: Signed,    i64: Signed,    i128: Signed,    isize: Signed);