base-traits 0.0.5

base traits (for Rust)
Documentation 
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// src/traits/is_nan.rs : `IsNAN`

/// Trait defining instance method `is_nan() : bool` that indicates
/// whether the implementing type instance has a value that is deemed to be
/// "not a number" (as in so for [`f32::NAN`] [`f64::NAN`]).
pub trait IsNAN {
    fn is_nan(&self) -> bool;
}


impl<T : IsNAN + ?Sized> IsNAN for Box<T> {
    fn is_nan(&self) -> bool {
        (**self).is_nan()
    }
}

impl<T : IsNAN + ?Sized> IsNAN for std::rc::Rc<T> {
    fn is_nan(&self) -> bool {
        (**self).is_nan()
    }
}


#[cfg(feature = "implement-IsNAN-for-built_ins")]
mod impl_for_built_ins {
    #![allow(non_snake_case)]

    macro_rules! implement_IsNAN_ {
        ($type:tt) => {
            impl super::IsNAN for $type {
                #[inline]
                fn is_nan(&self) -> bool {
                    $type::is_nan(*self)
                }
            }
        };
    }

    implement_IsNAN_!(f32);
    implement_IsNAN_!(f64);
}


// ///////////////////////////// end of file //////////////////////////// //