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#![no_std]
pub trait NumberAs<T>: Sized {
fn number_as(self) -> T;
}
macro_rules! number_as_impl {
($from:ty, $to:ty) => {
impl NumberAs<$to> for $from {
fn number_as(self) -> $to {
self as $to
}
}
};
}
macro_rules! number_as_batch {
($from:ty) => {
number_as_impl!($from, u8);
number_as_impl!($from, u16);
number_as_impl!($from, u32);
number_as_impl!($from, u64);
number_as_impl!($from, u128);
number_as_impl!($from, usize);
number_as_impl!($from, i8);
number_as_impl!($from, i16);
number_as_impl!($from, i32);
number_as_impl!($from, i64);
number_as_impl!($from, i128);
number_as_impl!($from, isize);
number_as_impl!($from, f32);
number_as_impl!($from, f64);
};
}
number_as_batch!(u8);
number_as_batch!(u16);
number_as_batch!(u32);
number_as_batch!(u64);
number_as_batch!(u128);
number_as_batch!(usize);
number_as_batch!(i8);
number_as_batch!(i16);
number_as_batch!(i32);
number_as_batch!(i64);
number_as_batch!(i128);
number_as_batch!(isize);
number_as_batch!(f32);
number_as_batch!(f64);
pub trait Number:
NumberAs<u8>
+ NumberAs<u16>
+ NumberAs<u32>
+ NumberAs<u64>
+ NumberAs<u128>
+ NumberAs<usize>
+ NumberAs<i8>
+ NumberAs<i16>
+ NumberAs<i32>
+ NumberAs<i64>
+ NumberAs<i128>
+ NumberAs<isize>
+ NumberAs<f32>
+ NumberAs<f64> {
}
macro_rules! number_impl {
($t:ty) => {
impl Number for $t {}
};
}
number_impl!(u8);
number_impl!(u16);
number_impl!(u32);
number_impl!(u64);
number_impl!(u128);
number_impl!(usize);
number_impl!(i8);
number_impl!(i16);
number_impl!(i32);
number_impl!(i64);
number_impl!(i128);
number_impl!(isize);
number_impl!(f32);
number_impl!(f64);