60 lines
2.1 KiB
Rust
60 lines
2.1 KiB
Rust
// Copyright 2013 The OMath Developers. For a full listing of the authors,
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// refer to the Cargo.toml 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 std::ptr;
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use std::ops::*;
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use num::PartialOrd;
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/// An array containing elements of type `Element`
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pub trait Array where
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// FIXME: Ugly type signatures - blocked by rust-lang/rust#24092
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Self: Index<usize, Output = <Self as Array>::Element>,
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Self: IndexMut<usize, Output = <Self as Array>::Element>,
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{
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type Element: Copy;
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/// Get the pointer to the first element of the array.
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#[inline]
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fn as_ptr(&self) -> *const Self::Element {
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&self[0]
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}
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/// Get a mutable pointer to the first element of the array.
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#[inline]
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fn as_mut_ptr(&mut self) -> *mut Self::Element {
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&mut self[0]
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}
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/// Swap the elements at indices `i` and `j` in-place.
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#[inline]
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fn swap_elements(&mut self, i: usize, j: usize) {
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// Yeah, ok borrow checker – I know what I'm doing here
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unsafe { ptr::swap(&mut self[i], &mut self[j]) };
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}
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/// The sum of the elements of the array.
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fn sum(self) -> Self::Element where Self::Element: Add<Output = <Self as Array>::Element>;
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/// The product of the elements of the array.
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fn product(self) -> Self::Element where Self::Element: Mul<Output = <Self as Array>::Element>;
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/// The minimum element of the array.
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fn min(self) -> Self::Element where Self::Element: PartialOrd;
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/// The maximum element of the array.
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fn max(self) -> Self::Element where Self::Element: PartialOrd;
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}
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