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|
use std::fmt;
use std::ops::{Add, Sub, AddAssign, SubAssign, Mul, MulAssign, Div, DivAssign};
pub trait Internal:
Copy + Clone + PartialEq + fmt::Debug + fmt::Display + PartialOrd +
Add<Output=Self> + Sub<Output=Self> + AddAssign + SubAssign +
Mul<Output=Self> + MulAssign + Div<Output=Self> + DivAssign +
{
const ZERO: Self;
fn as_usize(&self) -> usize;
fn as_f64(&self) -> f64;
}
macro_rules! impl_for_type {
($z:expr, $t:ty) => {
impl Internal for $t {
const ZERO: Self = $z;
fn as_usize(&self) -> usize {
*self as usize
}
fn as_f64(&self) -> f64 {
*self as f64
}
}
};
}
impl_for_type!(0, u8);
impl_for_type!(0, u16);
impl_for_type!(0, u32);
impl_for_type!(0, u64);
impl_for_type!(0, u128);
impl_for_type!(0, usize);
impl_for_type!(0, i8);
impl_for_type!(0, i16);
impl_for_type!(0, i32);
impl_for_type!(0, i64);
impl_for_type!(0, i128);
impl_for_type!(0, isize);
impl_for_type!(0.0, f32);
impl_for_type!(0.0, f64);
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