ougi 0.1.0

インタラクティブエンターテインメントを作成する個人プロジェクト
Documentation 
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use crate::*;

#[cfg(feature = "f64_to_f32")]
use num_traits::ToPrimitive;

macro_rules! impl_primitive {
    ($($bty:ty, $lty:ty)*) => {
        $(
            impl BitDouble for $bty {
                type Double = $lty;

                fn double(&self) -> Self::Double {
                    Self::Double::from(*self)
                }
            }

            impl BitHalf for $lty {
                type Half = $bty;

                fn half(&self) -> Option<Self::Half> {
                    Self::Half::try_from(*self).ok()
                }
            }
        )*
    };
}

impl_primitive! {
    u8, u16
    u16, u32
    u32, u64
    u64, u128
    i8, i16
    i16, i32
    i32, i64
    i64, i128
}

impl BitDouble for f32 {
    type Double = f64;

    fn double(&self) -> Self::Double {
        (*self).into()
    }
}

#[cfg(feature = "f64_to_f32")]
impl BitHalf for f64 {
    type Half = f32;

    fn half(&self) -> Option<Self::Half> {
        self.to_f32()
    }
}