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libstd: impl Orderable for BigUint/BigInt

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This commit is contained in:
gifnksm 2013-05-14 21:20:27 +09:00
parent 5ce0795de5
commit e3695468b7
1 changed files with 37 additions and 1 deletions
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38
src/libstd/num/bigint.rs
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@ -17,7 +17,7 @@ A BigInt is a combination of BigUint and Sign.
*/
use core::cmp::{Eq, Ord, TotalEq, TotalOrd, Ordering, Less, Equal, Greater};
use core::num::{IntConvertible, Zero, One, ToStrRadix, FromStrRadix};
use core::num::{IntConvertible, Zero, One, ToStrRadix, FromStrRadix, Orderable};
/**
A BigDigit is a BigUint's composing element.
@ -146,6 +146,24 @@ impl FromStr for BigUint {
impl Num for BigUint {}
impl Orderable for BigUint {
#[inline(always)]
fn min(&self, other: &BigUint) -> BigUint {
if self < other { self.clone() } else { other.clone() }
}
#[inline(always)]
fn max(&self, other: &BigUint) -> BigUint {
if self > other { self.clone() } else { other.clone() }
}
#[inline(always)]
fn clamp(&self, mn: &BigUint, mx: &BigUint) -> BigUint {
if self > mx { mx.clone() } else
if self < mn { mn.clone() } else { self.clone() }
}
}
impl Shl<uint, BigUint> for BigUint {
#[inline(always)]
fn shl(&self, rhs: &uint) -> BigUint {
@ -792,6 +810,24 @@ impl FromStr for BigInt {
impl Num for BigInt {}
impl Orderable for BigInt {
#[inline(always)]
fn min(&self, other: &BigInt) -> BigInt {
if self < other { self.clone() } else { other.clone() }
}
#[inline(always)]
fn max(&self, other: &BigInt) -> BigInt {
if self > other { self.clone() } else { other.clone() }
}
#[inline(always)]
fn clamp(&self, mn: &BigInt, mx: &BigInt) -> BigInt {
if self > mx { mx.clone() } else
if self < mn { mn.clone() } else { self.clone() }
}
}
impl Shl<uint, BigInt> for BigInt {
#[inline(always)]
fn shl(&self, rhs: &uint) -> BigInt {