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// Copyright 2016 bluss and ndarray developers. // // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your // option. This file may not be copied, modified, or distributed // except according to those terms. use std::cmp::Ordering; /// An axis index. /// /// An axis one of an array’s “dimensions”; an *n*-dimensional array has *n* axes. /// Axis *0* is the array’s outermost axis and *n*-1 is the innermost. /// /// All array axis arguments use this type to make the code easier to write /// correctly and easier to understand. #[derive(Eq, Ord, Hash, Debug)] pub struct Axis(pub usize); impl Axis { /// Return the index of the axis. #[inline(always)] pub fn index(&self) -> usize { self.0 } } copy_and_clone!{Axis} macro_rules! derive_cmp { ($traitname:ident for $typename:ident, $method:ident -> $ret:ty) => { impl $traitname for $typename { #[inline(always)] fn $method(&self, rhs: &Self) -> $ret { (self.0).$method(&rhs.0) } } } } derive_cmp!{PartialEq for Axis, eq -> bool} derive_cmp!{PartialOrd for Axis, partial_cmp -> Option<Ordering>}