96 lines
2.6 KiB
Rust
96 lines
2.6 KiB
Rust
|
// Copyright 2013-2014 The CGMath Developers. For a full listing of the authors,
|
||
|
// refer to the AUTHORS file at the top-level directory of this distribution.
|
||
|
//
|
||
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
// you may not use this file except in compliance with the License.
|
||
|
// You may obtain a copy of the License at
|
||
|
//
|
||
|
// http://www.apache.org/licenses/LICENSE-2.0
|
||
|
//
|
||
|
// Unless required by applicable law or agreed to in writing, software
|
||
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
// See the License for the specific language governing permissions and
|
||
|
// limitations under the License.
|
||
|
|
||
|
use approx::ApproxEq;
|
||
|
|
||
|
use std::cmp;
|
||
|
use std::fmt;
|
||
|
|
||
|
/// A trait providing a [partial ordering][po]
|
||
|
///
|
||
|
/// [po]: http://mathworld.wolfram.com/PartialOrder.html
|
||
|
pub trait PartialOrd {
|
||
|
fn partial_min(self, other: Self) -> Self;
|
||
|
fn partial_max(self, other: Self) -> Self;
|
||
|
}
|
||
|
|
||
|
macro_rules! partial_ord_int (
|
||
|
($T:ident) => (
|
||
|
impl PartialOrd for $T {
|
||
|
fn partial_min(self, other: $T) -> $T { cmp::min(self, other) }
|
||
|
fn partial_max(self, other: $T) -> $T { cmp::max(self, other) }
|
||
|
}
|
||
|
)
|
||
|
)
|
||
|
|
||
|
partial_ord_int!(int)
|
||
|
partial_ord_int!(i8)
|
||
|
partial_ord_int!(i16)
|
||
|
partial_ord_int!(i32)
|
||
|
partial_ord_int!(i64)
|
||
|
partial_ord_int!(uint)
|
||
|
partial_ord_int!(u8)
|
||
|
partial_ord_int!(u16)
|
||
|
partial_ord_int!(u32)
|
||
|
partial_ord_int!(u64)
|
||
|
|
||
|
macro_rules! partial_ord_float (
|
||
|
($T:ident) => (
|
||
|
impl PartialOrd for $T {
|
||
|
fn partial_min(self, other: $T) -> $T { self.min(other) }
|
||
|
fn partial_max(self, other: $T) -> $T { self.max(other) }
|
||
|
}
|
||
|
)
|
||
|
)
|
||
|
|
||
|
partial_ord_float!(f32)
|
||
|
partial_ord_float!(f64)
|
||
|
|
||
|
/// Base numeric types with partial ordering
|
||
|
pub trait BaseNum: Primitive + PartialOrd + fmt::Show {}
|
||
|
|
||
|
impl BaseNum for i8 {}
|
||
|
impl BaseNum for i16 {}
|
||
|
impl BaseNum for i32 {}
|
||
|
impl BaseNum for i64 {}
|
||
|
impl BaseNum for int {}
|
||
|
impl BaseNum for u8 {}
|
||
|
impl BaseNum for u16 {}
|
||
|
impl BaseNum for u32 {}
|
||
|
impl BaseNum for u64 {}
|
||
|
impl BaseNum for uint {}
|
||
|
impl BaseNum for f32 {}
|
||
|
impl BaseNum for f64 {}
|
||
|
|
||
|
/// Base integer types
|
||
|
pub trait BaseInt : BaseNum + Int {}
|
||
|
|
||
|
impl BaseInt for i8 {}
|
||
|
impl BaseInt for i16 {}
|
||
|
impl BaseInt for i32 {}
|
||
|
impl BaseInt for i64 {}
|
||
|
impl BaseInt for int {}
|
||
|
impl BaseInt for u8 {}
|
||
|
impl BaseInt for u16 {}
|
||
|
impl BaseInt for u32 {}
|
||
|
impl BaseInt for u64 {}
|
||
|
impl BaseInt for uint {}
|
||
|
|
||
|
/// Base floating point types
|
||
|
pub trait BaseFloat : BaseNum + FloatMath + ApproxEq<Self> + fmt::Float {}
|
||
|
|
||
|
impl BaseFloat for f32 {}
|
||
|
impl BaseFloat for f64 {}
|