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60 lines
1.7 KiB
60 lines
1.7 KiB
// This file is part of Bertini 2.
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//
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// system/precon.hpp 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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// system/precon.hpp 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 system/precon.hpp. If not, see <http://www.gnu.org/licenses/>.
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//
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// Copyright(C) 2015 - 2017 by Bertini2 Development Team
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//
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// See <http://www.gnu.org/licenses/> for a copy of the license,
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// as well as COPYING. Bertini2 is provided with permitted
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// additional terms in the b2/licenses/ directory.
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/**
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\file system/precon.hpp
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\brief Provides preconstructed systems for use around the home and office.
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*/
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#pragma once
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#include "system/system.hpp"
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namespace bertini {
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namespace system {
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struct Precon {
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/**
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Creates the Griewank-Osborn system.
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From the returned system, you can unpack the variables, etc.
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*/
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static System GriewankOsborn();
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/**
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Creates system with crossed paths at t = 1/3 and t = 2/3.
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From the returned system, you can unpack the variables, etc.
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*/
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static System CrossedPaths();
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/**
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\brief Constructs a system describing the 2-sphere, in variables x, y, z.
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System has one affine variable group: x, y, z;
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One function: x^2 + y^2 + z^2 - 1;
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*/
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static System Sphere();
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};
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} // namespace system
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} // namespace bertini
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