/rust/registry/src/index.crates.io-1949cf8c6b5b557f/num-traits-0.2.19/src/ops/inv.rs

Source
/// 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
    }
}

Coverage Report

Created: 2025-10-28 06:06

Line	Count	Source
1		/// Unary operator for retrieving the multiplicative inverse, or reciprocal, of a value.
2		pub 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
20		impl Inv for f32 {
21		type Output = f32;
22		#[inline]
23	0	fn inv(self) -> f32 {
24	0	1.0 / self
25	0	}
26		}
27		impl Inv for f64 {
28		type Output = f64;
29		#[inline]
30	0	fn inv(self) -> f64 {
31	0	1.0 / self
32	0	}
33		}
34		impl<'a> Inv for &'a f32 {
35		type Output = f32;
36		#[inline]
37	0	fn inv(self) -> f32 {
38	0	1.0 / *self
39	0	}
40		}
41		impl<'a> Inv for &'a f64 {
42		type Output = f64;
43		#[inline]
44	0	fn inv(self) -> f64 {
45	0	1.0 / *self
46	0	}
47		}