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106 lines
3.4 KiB
106 lines
3.4 KiB
// This file is part of Bertini 2.
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//
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// fixed_prec_endgame.hpp is free software: you can redistribute it and/or
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// modify 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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// fixed_prec_endgame.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 fixed_prec_endgame.hpp. If not, see
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// <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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// Tim Hodges, Colorado State University
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#pragma once
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/**
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\file fixed_prec_endgame.hpp
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\brief Contains the policy for fixed precision endgame types.
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*/
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#include "endgames/config.hpp"
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#include "endgames/prec_base.hpp"
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#include "trackers/fixed_precision_tracker.hpp"
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#include "trackers/fixed_precision_utilities.hpp"
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namespace bertini {
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namespace endgame {
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template <typename TrackerT>
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class FixedPrecEndgame : public virtual EndgamePrecPolicyBase<TrackerT> {
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public:
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using TrackerType = TrackerT;
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using BaseComplexType =
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typename tracking::TrackerTraits<TrackerType>::BaseComplexType;
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using BaseRealType =
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typename tracking::TrackerTraits<TrackerType>::BaseRealType;
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using BCT = BaseComplexType;
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using BRT = BaseRealType;
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template <typename... T>
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static unsigned EnsureAtUniformPrecision(T&... args) {
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return bertini::tracking::fixed::EnsureAtUniformPrecision(args...);
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}
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template <typename T>
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static void EnsureAtPrecision(T const& obj, unsigned prec) {
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using bertini::Precision;
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if (Precision(obj) != prec) {
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std::stringstream err_msg;
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err_msg << "ensuring precision of object failed; precision is "
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<< Precision(obj) << " and required precision is " << prec;
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throw std::runtime_error(err_msg.str());
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}
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}
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SuccessCode RefineSampleImpl(Vec<BCT>& result, Vec<BCT> const& current_sample,
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BCT const& current_time, double tol,
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unsigned max_iterations) const {
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using RT = mpfr_float;
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using std::max;
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auto& TR = this->GetTracker();
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auto refinement_success = this->GetTracker().Refine(
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result, current_sample, current_time, tol, max_iterations);
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return SuccessCode::Success;
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}
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explicit FixedPrecEndgame(TrackerT const& new_tracker)
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: EndgamePrecPolicyBase<TrackerT>(new_tracker) {}
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virtual ~FixedPrecEndgame() = default;
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}; // re: fixed prec endgame policy
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template <>
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struct EGPrecSelector<tracking::DoublePrecisionTracker> {
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using type = FixedPrecEndgame<tracking::DoublePrecisionTracker>;
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};
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template <>
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struct EGPrecSelector<tracking::MultiplePrecisionTracker> {
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using type = FixedPrecEndgame<tracking::MultiplePrecisionTracker>;
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};
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template <class D>
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struct EGPrecSelector<tracking::FixedPrecisionTracker<D>> {
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using type = FixedPrecEndgame<tracking::FixedPrecisionTracker<D>>;
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};
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} // namespace endgame
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} // namespace bertini
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