UnaryOptimizer.hpp

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#pragma once
 
#include "AstGlobal.h"
#include "AstMath/Function.hpp"
#include "AstMath/SolverStats.h"
#include <type_traits>
 
 
AST_NAMESPACE_BEGIN
 
 
class AST_MATH_API IUnaryOptimizer
{
public:
    virtual ~IUnaryOptimizer() = default;
 
    virtual errc_t solve(UnaryScalarFunc& func, double min, double max, double& result, double* funcValue = nullptr) = 0;
};
 
 
class AST_MATH_API UnaryOptimizer : public IUnaryOptimizer
{
public:
    using IUnaryOptimizer::solve;
 
    UnaryOptimizer();
    UnaryOptimizer(double relTol, double absTol, int maxIter);
 
    explicit UnaryOptimizer(double absTol);
 
    ~UnaryOptimizer() override = default;
 
    double getRelTol() const { return relTol_; };
    double getAbsTol() const { return absTol_; };
    int getMaxIter() const { return maxIter_; };
 
    void setRelTol(double relTol) { relTol_ = relTol; };
    void setAbsTol(double absTol) { absTol_ = absTol; };
    void setMaxIter(int maxIter) { maxIter_ = maxIter; };
 
    const SolverStats& getStats() const { return stats_; };
 
    template<typename Func>
    typename std::enable_if<!std::is_base_of<UnaryScalarFunc, typename std::remove_pointer<Func>::type>::value, errc_t>::type
    solve(Func func, double min, double max, double& result, double* funcValue = nullptr) {
        UnaryScalarGenericFunc<Func> adapter(std::move(func));
        return this->solve(adapter, min, max, result, funcValue);
    }
 
protected:
    double relTol_;         
    double absTol_;         
    int maxIter_;           
    SolverStats stats_{};   
};
 
 
AST_NAMESPACE_END