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remove formats

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LEXUGE 2018-04-13 16:04:56 +08:00
parent 97f3892bd1
commit f74de249c8
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1 changed files with 46 additions and 1 deletions
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47
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
/// overflow.
@ -90,6 +90,51 @@ checked_impl!(CheckedDiv, checked_div, i32);
checked_impl!(CheckedDiv, checked_div, i64);
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);
// CheckedNeg
macro_rules! checked_impl_one_para {
($trait_name:ident, $method:ident, $t:ty) => {
impl $trait_name for $t {
#[inline]
fn $method(&self) -> Option<$t> {
<$t>::$method(*self)
}
}
}
}
pub trait CheckedNeg: Sized {
fn checked_neg(&self) -> Option<Self>;
}
checked_impl_one_para!(CheckedNeg, checked_neg, u8);
checked_impl_one_para!(CheckedNeg, checked_neg, u16);
checked_impl_one_para!(CheckedNeg, checked_neg, u32);
checked_impl_one_para!(CheckedNeg, checked_neg, u64);
checked_impl_one_para!(CheckedNeg, checked_neg, usize);
checked_impl_one_para!(CheckedNeg, checked_neg, i8);
checked_impl_one_para!(CheckedNeg, checked_neg, i16);
checked_impl_one_para!(CheckedNeg, checked_neg, i32);
checked_impl_one_para!(CheckedNeg, checked_neg, i64);
checked_impl_one_para!(CheckedNeg, checked_neg, isize);
/// Performs a left shift that returns `None` on overflow.
pub trait CheckedShl: Sized + Shl<u32, Output=Self> {
/// Shifts a number to the left, checking for overflow. If overflow happens,