num_traits/ops/
inv.rs

1/// Unary operator for retrieving the multiplicative inverse, or reciprocal, of a value.
2pub trait Inv {
3    /// The result after applying the operator.
4    type Output;
5
6    /// Returns the multiplicative inverse of `self`.
7    ///
8    /// # Examples
9    ///
10    /// ```
11    /// use std::f64::INFINITY;
12    /// use num_traits::Inv;
13    ///
14    /// assert_eq!(7.0.inv() * 7.0, 1.0);
15    /// assert_eq!((-0.0).inv(), -INFINITY);
16    /// ```
17    fn inv(self) -> Self::Output;
18}
19
20impl Inv for f32 {
21    type Output = f32;
22    #[inline]
23    fn inv(self) -> f32 {
24        1.0 / self
25    }
26}
27impl Inv for f64 {
28    type Output = f64;
29    #[inline]
30    fn inv(self) -> f64 {
31        1.0 / self
32    }
33}
34impl<'a> Inv for &'a f32 {
35    type Output = f32;
36    #[inline]
37    fn inv(self) -> f32 {
38        1.0 / *self
39    }
40}
41impl<'a> Inv for &'a f64 {
42    type Output = f64;
43    #[inline]
44    fn inv(self) -> f64 {
45        1.0 / *self
46    }
47}
num_traits/ops/inv.rs

num_traits/ops/
inv.rs
