67 lines
1.5 KiB
C++
67 lines
1.5 KiB
C++
/* node.hpp: Definition of fractions and nodes on the Calkin-Wilf tree
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* Created: 2025-11-27
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* Author: Aryadev Chavali
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* License: See end of file
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* Commentary:
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*/
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#ifndef NODE_HPP
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#define NODE_HPP
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#include <string>
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#include <vector>
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#include "base.hpp"
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namespace cw::node
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{
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struct Fraction
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{
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u64 numerator, denominator; // always simplified
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f64 norm;
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Fraction(u64 numerator = 0, u64 denominator = 1);
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// Complete ordering on Fractions
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bool operator<(const Fraction other);
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bool operator==(const Fraction &other);
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};
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std::string to_string(const Fraction &);
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struct Node
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{
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Fraction value;
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i64 left, right;
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Node(const Fraction &&val = {}, i64 left = -1, i64 right = -1);
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};
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struct NodeAllocator
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{
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std::vector<Node> vec;
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NodeAllocator(u64 capacity = 256);
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u64 alloc(Node n);
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Node get_val(u64 n) const;
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Node &get_ref(u64 n);
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};
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std::string to_string(const NodeAllocator &, const i64, int depth = 1);
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} // namespace cw::node
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#endif
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/* Copyright (C) 2025 Aryadev Chavali
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License Version 2 for
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* details.
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* You may distribute and modify this code under the terms of the GNU General
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* Public License Version 2, which you should have received a copy of along with
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* this program. If not, please go to <https://www.gnu.org/licenses/>.
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*/
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