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// Copyright (c) 2013-2015 Sandstorm Development Group, Inc. and contributors // Licensed under the MIT License: // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to deal // in the Software without restriction, including without limitation the rights // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell // copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN // THE SOFTWARE. /// Since `::std::num::Zero` isn't stable, we have our own version. pub trait Zero { fn zero() -> Self; } macro_rules! zero_impl( ($t:ident, $e:expr) => ( impl Zero for $t { #[inline] fn zero() -> $t { $e } } ) ); zero_impl!(u8, 0); zero_impl!(u16, 0); zero_impl!(u32, 0); zero_impl!(u64, 0); zero_impl!(i8, 0); zero_impl!(i16, 0); zero_impl!(i32, 0); zero_impl!(i64, 0); zero_impl!(f32, 0.0); zero_impl!(f64, 0.0);