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Merge 9047722838 into bb67a3d03a

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LEXUGE 2018-04-05 11:21:53 +00:00 committed by GitHub
parent bb67a3d03a 9047722838
commit 9d7937711a
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1 changed files with 18 additions and 1 deletions
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19
src/ops/checked.rs
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@ -1,4 +1,4 @@
use core::ops::{Add, Sub, Mul, Div, Shl, Shr}; use core::ops::{Add, Sub, Mul, Div, Rem, Shl, Shr};
/// Performs addition that returns `None` instead of wrapping around on /// Performs addition that returns `None` instead of wrapping around on
/// overflow. /// overflow.
@ -90,6 +90,23 @@ checked_impl!(CheckedDiv, checked_div, i32);
checked_impl!(CheckedDiv, checked_div, i64); checked_impl!(CheckedDiv, checked_div, i64);
checked_impl!(CheckedDiv, checked_div, isize); checked_impl!(CheckedDiv, checked_div, isize);
// CheckedRem
pub trait CheckedRem: Sized + Rem<Self, Output=Self> {
fn checked_rem(&self, v: &Self) -> Option<Self>;
}
checked_impl!(CheckedRem, checked_rem, u8);
checked_impl!(CheckedRem, checked_rem, u16);
checked_impl!(CheckedRem, checked_rem, u32);
checked_impl!(CheckedRem, checked_rem, u64);
checked_impl!(CheckedRem, checked_rem, usize);
checked_impl!(CheckedRem, checked_rem, i8);
checked_impl!(CheckedRem, checked_rem, i16);
checked_impl!(CheckedRem, checked_rem, i32);
checked_impl!(CheckedRem, checked_rem, i64);
checked_impl!(CheckedRem, checked_rem, isize);
/// Performs a left shift that returns `None` on overflow. /// Performs a left shift that returns `None` on overflow.
pub trait CheckedShl: Sized + Shl<u32, Output=Self> { pub trait CheckedShl: Sized + Shl<u32, Output=Self> {
/// Shifts a number to the left, checking for overflow. If overflow happens, /// Shifts a number to the left, checking for overflow. If overflow happens,