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88 lines
3.0 KiB
88 lines
3.0 KiB
// This file is part of Bertini 2.
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//
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// tracking/step.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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// tracking/step.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 tracking/step.hpp. If not, see <http://www.gnu.org/licenses/>.
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//
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// Copyright(C) 2015 - 2021 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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// individual authors of this file include:
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// silviana amethyst, university of wisconsin eau claire
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/**
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\file step.hpp
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\brief Provides Step wrappers for taking a generic predict-correct step.
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This provides no calls for adaptive precision, those living with the AMPTracker
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type instead.
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*/
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#ifndef BERTINI_STEP_HPP
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#define BERTINI_STEP_HPP
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#include "trackers/correct.hpp"
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#include "trackers/predict.hpp"
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namespace bertini {
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namespace tracking {
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/**
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\tparam ComplexType The type of number being used in the algorithm
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*/
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template <typename ComplexType, typename RealType>
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SuccessCode Step(Predictor predictor_choice, Vec<ComplexType>& next_space,
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ComplexType& next_time, System& sys,
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Vec<ComplexType> const& current_space,
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ComplexType current_time, ComplexType const& delta_t,
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RealType& condition_number_estimate,
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unsigned& num_steps_since_last_condition_number_computation,
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unsigned frequency_of_CN_estimation, PrecisionType prec_type,
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RealType const& tracking_tolerance,
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RealType const& path_truncation_threshold,
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unsigned min_num_newton_iterations,
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unsigned max_num_newton_iterations,
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AdaptiveMultiplePrecisionConfig const& AMP_config) {
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SuccessCode predictor_code = Predict(
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next_space, sys, current_space, current_time, delta_t,
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condition_number_estimate,
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num_steps_since_last_condition_number_computation,
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frequency_of_CN_estimation, prec_type, tracking_tolerance, AMP_config);
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if (predictor_code != SuccessCode::Success) return predictor_code;
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next_time = current_time + delta_t;
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SuccessCode corrector_code = Correct(
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next_space, sys,
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current_space, // pass by value to get a copy of it
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next_time, prec_type, tracking_tolerance, path_truncation_threshold,
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min_num_newton_iterations, max_num_newton_iterations, AMP_config);
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if (corrector_code != SuccessCode::Success) return corrector_code;
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return SuccessCode::Success;
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}
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} // namespace tracking
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} // namespace bertini
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#endif
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