53 lines
1.6 KiB
Rust
53 lines
1.6 KiB
Rust
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// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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//! Operations and constants for unsigned 16-bits integers (`u16` type)
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use cmp::{Eq, Ord, TotalEq, TotalOrd, Less, Greater, Equal, Ordering};
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use default::Default;
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use intrinsics;
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use num::{Bitwise, Bounded, Zero, One, Unsigned, Num, Int, Primitive};
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use num::{CheckedAdd, CheckedSub, CheckedMul, CheckedDiv};
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use ops::{Add, Sub, Mul, Div, Rem, Neg, BitAnd, BitOr, BitXor};
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use ops::{Shl, Shr, Not};
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use option::{Some, None, Option};
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uint_module!(u16, i16, 16)
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impl CheckedAdd for u16 {
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#[inline]
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fn checked_add(&self, v: &u16) -> Option<u16> {
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unsafe {
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let (x, y) = intrinsics::u16_add_with_overflow(*self, *v);
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if y { None } else { Some(x) }
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}
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}
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}
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impl CheckedSub for u16 {
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#[inline]
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fn checked_sub(&self, v: &u16) -> Option<u16> {
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unsafe {
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let (x, y) = intrinsics::u16_sub_with_overflow(*self, *v);
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if y { None } else { Some(x) }
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}
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}
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}
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impl CheckedMul for u16 {
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#[inline]
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fn checked_mul(&self, v: &u16) -> Option<u16> {
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unsafe {
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let (x, y) = intrinsics::u16_mul_with_overflow(*self, *v);
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if y { None } else { Some(x) }
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}
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}
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}
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