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