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// src/traits/is_infinity.rs : `IsInfinity`
/// Trait defining instance method `is_infinity() : bool` that indicates
/// whether the implementing type instance is conceptually (or actually)
/// infinite.
///
/// # Additional Implementations on Foreign Types
///
/// ## Built-in Types
///
/// If the feature `"implement-IsInfinity-for-built_ins"`
/// is defined (as it is by `"default"`), then this is also implemented
/// for the following types:
/// - [`f32`];
/// - [`f64`];
pub trait IsInfinity {
fn is_infinity(&self) -> bool;
}
impl<T : IsInfinity + ?Sized> IsInfinity for Box<T> {
fn is_infinity(&self) -> bool {
(**self).is_infinity()
}
}
impl<T : IsInfinity + ?Sized> IsInfinity for std::rc::Rc<T> {
fn is_infinity(&self) -> bool {
(**self).is_infinity()
}
}
#[cfg(feature = "implement-IsInfinity-for-built_ins")]
mod impl_for_built_ins {
#![allow(non_snake_case)]
macro_rules! implement_IsInfinity_ {
($type:tt) => {
impl super::IsInfinity for $type {
#[inline]
fn is_infinity(&self) -> bool {
(*self).is_infinite()
}
}
};
}
implement_IsInfinity_!(f32);
implement_IsInfinity_!(f64);
}
// ///////////////////////////// end of file //////////////////////////// //