numaxiom 0.0.2

Lightweight numeric marker traits for ranges/signs plus constants and ops; std by default, no_std optional.
Documentation 
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/// Marker for types that can represent a maximum value.
/// Implementers must ensure a well-defined maximum value exists.
pub trait HasMaxValue {}

macro_rules! impl_has_max_value_for_primitive {
    ($($ty:ty),+ $(,)?) => {
        $(impl HasMaxValue for $ty {})+
    };
}

impl_has_max_value_for_primitive!(i8, i16, i32, i64, i128, isize);
impl_has_max_value_for_primitive!(u8, u16, u32, u64, u128, usize);
impl_has_max_value_for_primitive!(f32, f64);