FindRoot.hpp

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// SPDX-License-Identifier: Apache-2.0
//
// Copyright 2026 Caleb Buahin
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

 
#ifndef OPENSWMM_FIND_ROOT_HPP
#define OPENSWMM_FIND_ROOT_HPP
 
#include <functional>
 
namespace openswmm {
namespace findroot {
 
constexpr int MAXIT = 60;  

using NewtonFunc = std::function<void(double x, double* f, double* df)>;
 
int newton(double x1, double x2, double* rts, double xacc, const NewtonFunc& func);

using RidderFunc = std::function<double(double x)>;
 
double ridder(double x1, double x2, double xacc, const RidderFunc& func);
 
} // namespace findroot
} // namespace openswmm
 
#endif // OPENSWMM_FIND_ROOT_HPP