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/// Numeric-like type can be represented by a `u64`.
///
/// Used by `Atomic` to store values.
pub(crate) trait Numeric: Sized + Copy + PartialEq {
/// Convert a value into `u64` representation
fn into_u64(self) -> u64;
/// Convert a `u64` representation into the value
fn from_u64(src: u64) -> Self;
}
macro_rules! impl_num {
( $($t:ty),* ) => {
$(
impl Numeric for $t {
fn into_u64(self) -> u64 {
self as u64
}
fn from_u64(src: u64) -> $t {
src as $t
}
}
)*
};
}
impl_num!(u8, u16, u32, u64, usize, i8, i16, i32, i64, isize);
impl<T> Numeric for *mut T {
fn into_u64(self) -> u64 {
self as u64
}
fn from_u64(src: u64) -> *mut T {
src as *mut T
}
}
impl Numeric for bool {
fn into_u64(self) -> u64 {
if self {
1
} else {
0
}
}
fn from_u64(src: u64) -> bool {
src != 0
}
}