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/// Unary operator for retrieving the multiplicative inverse, or reciprocal, of a value.
pub trait Inv {
/// The result after applying the operator.
type Output;
/// Returns the multiplicative inverse of `self`.
///
/// # Examples
///
/// ```
/// use std::f64::INFINITY;
/// use num_traits::Inv;
///
/// assert_eq!(7.0.inv() * 7.0, 1.0);
/// assert_eq!((-0.0).inv(), -INFINITY);
/// ```
fn inv(self) -> Self::Output;
}
impl Inv for f32 {
type Output = f32;
#[inline]
fn inv(self) -> f32 {
1.0 / self
}
}
impl Inv for f64 {
type Output = f64;
#[inline]
fn inv(self) -> f64 {
1.0 / self
}
}
impl<'a> Inv for &'a f32 {
type Output = f32;
#[inline]
fn inv(self) -> f32 {
1.0 / *self
}
}
impl<'a> Inv for &'a f64 {
type Output = f64;
#[inline]
fn inv(self) -> f64 {
1.0 / *self
}
}
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