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use crate::Sub; macro_rules! sub_impl { ($($t:ty)*) => ($( impl const Sub for $t { type Output = $t; #[inline] fn sub(self, other: $t) -> $t { self - other } } )*) } sub_impl! { usize u8 u16 u32 u64 u128 isize i8 i16 i32 i64 i128 f32 f64 }