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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. pub trait Mask { type T; fn mask(value: Self, mask: Self::T) -> Self; } macro_rules! int_mask( ($t:ident) => ( impl Mask for $t { type T = $t; #[inline] fn mask(value: $t, mask: $t) -> $t { value ^ mask } } ) ); int_mask!(i8); int_mask!(i16); int_mask!(i32); int_mask!(i64); int_mask!(u8); int_mask!(u16); int_mask!(u32); int_mask!(u64); impl Mask for f32 { type T = u32; #[inline] fn mask(value: f32, mask: u32) -> f32 { f32::from_bits(value.to_bits() ^ mask) } } impl Mask for f64 { type T = u64; #[inline] fn mask(value: f64, mask: u64) -> f64 { f64::from_bits(value.to_bits() ^ mask) } }