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NonZero unsigned_abs.

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Iago-lito 2021-04-15 12:26:39 +02:00
parent b6589bbfa9
commit 7e7b316163
1 changed files with 33 additions and 0 deletions
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33
library/core/src/num/nonzero.rs
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@ -594,6 +594,39 @@ macro_rules! nonzero_signed_operations {
// SAFETY: absolute value of nonzero cannot yield zero values.
unsafe { $Ty::new_unchecked(self.get().wrapping_abs()) }
}
/// Computes the absolute value of self
/// without any wrapping or panicking.
///
/// # Example
///
/// ```
/// #![feature(nonzero_ops)]
/// # #![feature(try_trait)]
#[doc = concat!("# use std::num::", stringify!($Ty), ";")]
#[doc = concat!("# use std::num::", stringify!($Uty), ";")]
///
/// # fn main() -> Result<(), std::option::NoneError> {
#[doc = concat!("let u_pos = ", stringify!($Uty), "::new(1)?;")]
#[doc = concat!("let i_pos = ", stringify!($Ty), "::new(1)?;")]
#[doc = concat!("let i_neg = ", stringify!($Ty), "::new(-1)?;")]
#[doc = concat!("let i_min = ", stringify!($Ty), "::new(",
stringify!($Int), "::MIN)?;")]
#[doc = concat!("let u_max = ", stringify!($Uty), "::new(",
stringify!($Uint), "::MAX / 2 + 1)?;")]
///
/// assert_eq!(u_pos, i_pos.unsigned_abs());
/// assert_eq!(u_pos, i_neg.unsigned_abs());
/// assert_eq!(u_max, i_min.unsigned_abs());
/// # Ok(())
/// # }
/// ```
#[unstable(feature = "nonzero_ops", issue = "84186")]
#[inline]
pub const fn unsigned_abs(self) -> $Uty {
// SAFETY: absolute value of nonzero cannot yield zero values.
unsafe { $Uty::new_unchecked(self.get().unsigned_abs()) }
}
}
)+
}