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