💿🐜 Antkeeper source code
https://antkeeper.com
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56 lines
1.6 KiB
56 lines
1.6 KiB
/*
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* Copyright (C) 2020 Christopher J. Howard
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*
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* This file is part of Antkeeper source code.
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*
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* Antkeeper source code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Antkeeper source code is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Antkeeper source code. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef ANTKEEPER_GENE_HPP
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#define ANTKEEPER_GENE_HPP
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namespace dna
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{
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/**
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* Isolates a pair of bits and returns them in the two least significant bits.
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*
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* @param x Diploid chromosome with interleaved alleles.
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* @param i Index of the pair to isolate.
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* @return Isolated pair of bits in the two least significant bits.
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*/
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template <class T>
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T isolate(T x, int i)
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{
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return (x >> (i << 1)) & 0b11;
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}
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/**
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* Isolates a sequence of genes and returns their alleles in the least significant bits.
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*
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* @param x Diploid chromosome with interleaed alleles.
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* @param i Index of the first gene in the sequence.
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* @param n Length of the sequence, in genes.
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* @return Alleles of the sequeuence in the least significant bits.
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*/
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template <class T>
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T isolate_n(T x, int i, int n)
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{
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T mask = (T(1) << (n << 1)) - 1;
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return (x >> (i << 1)) & mask;
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}
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} // namespace dna
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#endif // ANTKEEPER_GENE_HPP
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