spirix 0.0.12

Two's complement floating-point arithmetic library
Documentation 
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use core::mem::size_of;
pub trait FractionConstants {
    const FRACTION_BITS: isize;
    const POS_ONE_FRACTION: Self;
    const NEG_ONE_FRACTION: Self;
    const POS_SMALL_FRACTION: Self;
    const NEG_SMALL_FRACTION: Self;
    const MAX_FRACTION: Self;
    const MIN_FRACTION: Self;
    const ZERO: Self;
    const ONE: Self;
    const NEG_ONE: Self;
    const TWO: Self;
}

macro_rules! impl_fraction_constants {
    ($($f:ty),*) => {
        $(
            impl FractionConstants for $f {
                const FRACTION_BITS: isize = (size_of::<$f>() as isize).wrapping_mul(8);
                const POS_ONE_FRACTION: Self = -(<$f>::MIN >> 1);
                const NEG_ONE_FRACTION: Self = <$f>::MIN;
                const POS_SMALL_FRACTION: Self = Self::POS_ONE_FRACTION >> 1;
                const NEG_SMALL_FRACTION: Self = Self::NEG_ONE_FRACTION >> 1;
                const MAX_FRACTION: Self = <$f>::MAX;
                const MIN_FRACTION: Self = <$f>::MIN;
                const ZERO: Self = 0;
                const ONE: Self = 1;
                const NEG_ONE: Self = -1;
                const TWO: Self = 2;
            }
        )*
    }
}

impl_fraction_constants!(i8, i16, i32, i64, i128);