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NonZero saturating_abs.

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This commit is contained in:
Iago-lito 2021-04-15 12:23:02 +02:00
parent 6083b0ad2a
commit 65e7321457
1 changed files with 34 additions and 0 deletions
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34
library/core/src/num/nonzero.rs
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@ -527,6 +527,40 @@ pub const fn overflowing_abs(self) -> ($Ty, bool) {
flag,
)
}
/// Saturating absolute value, see
#[doc = concat!("[`", stringify!($Int), "::saturating_abs`].")]
///
/// # Example
///
/// ```
/// #![feature(nonzero_ops)]
/// # #![feature(try_trait)]
#[doc = concat!("# use std::num::", stringify!($Ty), ";")]
///
/// # fn main() -> Result<(), std::option::NoneError> {
#[doc = concat!("let pos = ", stringify!($Ty), "::new(1)?;")]
#[doc = concat!("let neg = ", stringify!($Ty), "::new(-1)?;")]
#[doc = concat!("let min = ", stringify!($Ty), "::new(",
stringify!($Int), "::MIN)?;")]
#[doc = concat!("let min_plus = ", stringify!($Ty), "::new(",
stringify!($Int), "::MIN + 1)?;")]
#[doc = concat!("let max = ", stringify!($Ty), "::new(",
stringify!($Int), "::MAX)?;")]
///
/// assert_eq!(pos, pos.saturating_abs());
/// assert_eq!(pos, neg.saturating_abs());
/// assert_eq!(max, min.saturating_abs());
/// assert_eq!(max, min_plus.saturating_abs());
/// # Ok(())
/// # }
/// ```
#[unstable(feature = "nonzero_ops", issue = "84186")]
#[inline]
pub const fn saturating_abs(self) -> $Ty {
// SAFETY: absolute value of nonzero cannot yield zero values.
unsafe { $Ty::new_unchecked(self.get().saturating_abs()) }
}
}
)+
}