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#![feature(i128_type)]
#![warn(missing_docs)]
#![no_std]
pub fn usize_from<T>(value: T) -> usize where T: IntoUsize {
IntoUsize::into_usize(value)
}
pub trait IntoUsize: Sized {
fn into_usize(self) -> usize;
}
pub trait FromUsize: Sized {
fn from_usize(usize) -> Self;
}
macro_rules! impl_into_usize {
($x:ty) => {
impl IntoUsize for $x {
fn into_usize(self) -> usize {
self as usize
}
}
}
}
macro_rules! impl_from_usize {
($x:ty) => {
impl FromUsize for $x {
fn from_usize(value: usize) -> Self {
value as Self
}
}
}
}
#[cfg(target_pointer_width = "128")] impl_from_usize!(u128);
#[cfg(target_pointer_width = "128")] impl_into_usize!(u128);
#[cfg(target_pointer_width = "128")] impl_into_usize!(u64);
#[cfg(target_pointer_width = "128")] impl_into_usize!(u32);
#[cfg(target_pointer_width = "128")] impl_into_usize!(u16);
#[cfg(target_pointer_width = "128")] impl_into_usize!(u8);
#[cfg(target_pointer_width = "64")] impl_from_usize!(u128);
#[cfg(target_pointer_width = "64")] impl_from_usize!(u64);
#[cfg(target_pointer_width = "64")] impl_into_usize!(u64);
#[cfg(target_pointer_width = "64")] impl_into_usize!(u32);
#[cfg(target_pointer_width = "64")] impl_into_usize!(u16);
#[cfg(target_pointer_width = "64")] impl_into_usize!(u8);
#[cfg(target_pointer_width = "32")] impl_from_usize!(u128);
#[cfg(target_pointer_width = "32")] impl_from_usize!(u64);
#[cfg(target_pointer_width = "32")] impl_from_usize!(u32);
#[cfg(target_pointer_width = "32")] impl_into_usize!(u32);
#[cfg(target_pointer_width = "32")] impl_into_usize!(u16);
#[cfg(target_pointer_width = "32")] impl_into_usize!(u8);
#[cfg(target_pointer_width = "16")] impl_from_usize!(u128);
#[cfg(target_pointer_width = "16")] impl_from_usize!(u64);
#[cfg(target_pointer_width = "16")] impl_from_usize!(u32);
#[cfg(target_pointer_width = "16")] impl_from_usize!(u16);
#[cfg(target_pointer_width = "16")] impl_into_usize!(u16);
#[cfg(target_pointer_width = "16")] impl_into_usize!(u8);
#[cfg(target_pointer_width = "8")] impl_from_usize!(u128);
#[cfg(target_pointer_width = "8")] impl_from_usize!(u64);
#[cfg(target_pointer_width = "8")] impl_from_usize!(u32);
#[cfg(target_pointer_width = "8")] impl_from_usize!(u16);
#[cfg(target_pointer_width = "8")] impl_from_usize!(u8);
#[cfg(target_pointer_width = "8")] impl_into_usize!(u8);