RK45 tableau, dense-output coefficients and step-control logic are adapted from the locally installed SciPy integrate/_ivp/rk.py and common.py. The implementation is rewritten in C; SciPy is not linked or required. Copyright (c) 2001-2002 Enthought, Inc. 2003, SciPy Developers. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. 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Ryu binary64 shortest conversion Copyright 2018 Ulf Adams Upstream: https://github.com/ulfjack/ryu Commit: 4c0618b0e44f7ef027ebae05d2cc7812048f7c8f The vendored ryu files are used under the following license option: Boost Software License - Version 1.0 - August 17th, 2003 Permission is hereby granted, free of charge, to any person or organization obtaining a copy of the software and accompanying documentation covered by this license (the "Software") to use, reproduce, display, distribute, execute, and transmit the Software, and to prepare derivative works of the Software, and to permit third-parties to whom the Software is furnished to do so, all subject to the following: The copyright notices in the Software and this entire statement, including the above license grant, this restriction and the following disclaimer, must be included in all copies of the Software, in whole or in part, and all derivative works of the Software, unless such copies or derivative works are solely in the form of machine-executable object code generated by a source language processor. 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