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// Copyright 2020 IOTA Stiftung // // Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with // the License. You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on // an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and limitations under the License. //! Binary representation of big integers. use crate::ternary::bigint::sealed::Sealed; /// The number of bits in an U384/I384. pub const BINARY_LEN: usize = 384; /// Binary representation of a big integer. pub trait BinaryRepresentation: Sealed + Clone { /// Inner representation type of the big integer. type Inner; /// Iterates over a slice of the inner representation type of the big integer. fn iter(&self) -> std::slice::Iter<'_, Self::Inner>; } /// The number of `u8`s in an U384/I384. pub const BINARY_LEN_IN_U8: usize = BINARY_LEN / 8; // 48 /// The inner representation of an U384/I384 using `BINARY_LEN_IN_U8` `u8`s. pub type U8Repr = [u8; BINARY_LEN_IN_U8]; impl Sealed for U8Repr {} impl BinaryRepresentation for U8Repr { type Inner = u8; fn iter(&self) -> std::slice::Iter<'_, Self::Inner> { (self as &[Self::Inner]).iter() } } /// The number of `u32`s in an U384/I384. pub const BINARY_LEN_IN_U32: usize = BINARY_LEN / 32; // 12 /// The inner representation of an U384/I384 using `BINARY_LEN_IN_U32` `u32`s. pub type U32Repr = [u32; BINARY_LEN_IN_U32]; impl Sealed for U32Repr {} impl BinaryRepresentation for U32Repr { type Inner = u32; fn iter(&self) -> std::slice::Iter<'_, Self::Inner> { (self as &[Self::Inner]).iter() } }