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https://github.com/CoolProp/CoolProp.git
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106 lines
3.8 KiB
C++
106 lines
3.8 KiB
C++
#ifndef SOLVERS_H
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#define SOLVERS_H
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#include <vector>
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#include <string>
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#include "Exceptions.h"
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#include "CoolPropTools.h"
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namespace CoolProp
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{
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// *****************************************************************************
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// *****************************************************************************
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// SOLVER WRAPPER CLASSES
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// *****************************************************************************
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// *****************************************************************************
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class FuncWrapper1D
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{
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public:
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int errcode;
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std::string errstring;
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Dictionary options;
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int iter;
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FuncWrapper1D() : errcode(0), errstring("") {};
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virtual ~FuncWrapper1D(){};
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virtual double call(double) = 0;
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/**
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* /brief A function for checking whether the input is in range;
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*
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* Meant to be implemented by derived classes; return true if input is out of range
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*/
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virtual bool input_not_in_range(double x){ return false; };
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};
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class FuncWrapper1DWithDeriv : public FuncWrapper1D
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{
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public:
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virtual double deriv(double) = 0;
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};
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class FuncWrapper1DWithTwoDerivs : public FuncWrapper1DWithDeriv
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{
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public:
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virtual double second_deriv(double) = 0;
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};
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class FuncWrapper1DWithThreeDerivs : public FuncWrapper1DWithTwoDerivs
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{
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public:
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virtual double third_deriv(double) = 0;
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};
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class FuncWrapperND
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{
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public:
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int errcode;
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std::string errstring;
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FuncWrapperND() : errcode(0), errstring("") {};
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virtual ~FuncWrapperND(){};
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virtual std::vector<double> call(const std::vector<double>&) = 0;// must be provided
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virtual std::vector<std::vector<double> > Jacobian(const std::vector<double>&);
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};
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// *****************************************************************************
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// *****************************************************************************
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// SOLVER ROUTINES
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// *****************************************************************************
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// *****************************************************************************
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// Single-Dimensional solvers, pointer versions
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double Brent(FuncWrapper1D* f, double a, double b, double macheps, double t, int maxiter);
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double Secant(FuncWrapper1D* f, double x0, double dx, double ftol, int maxiter);
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double BoundedSecant(FuncWrapper1D* f, double x0, double xmin, double xmax, double dx, double ftol, int maxiter);
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double Newton(FuncWrapper1DWithDeriv* f, double x0, double ftol, int maxiter);
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double Halley(FuncWrapper1DWithTwoDerivs* f, double x0, double ftol, int maxiter, double xtol_rel = 1e-12);
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double Householder4(FuncWrapper1DWithThreeDerivs* f, double x0, double ftol, int maxiter, double xtol_rel = 1e-12);
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// Single-Dimensional solvers, refere
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inline double Brent(FuncWrapper1D &f, double a, double b, double macheps, double t, int maxiter){
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return Brent(&f, a, b, macheps, t, maxiter);
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}
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inline double Secant(FuncWrapper1D &f, double x0, double dx, double ftol, int maxiter){
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return Secant(&f, x0, dx, ftol, maxiter);
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}
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inline double BoundedSecant(FuncWrapper1D &f, double x0, double xmin, double xmax, double dx, double ftol, int maxiter){
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return BoundedSecant(&f, x0, xmin, xmax, dx, ftol, maxiter);
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}
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inline double Newton(FuncWrapper1DWithDeriv &f, double x0, double ftol, int maxiter){
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return Newton(&f, x0, ftol, maxiter);
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}
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inline double Halley(FuncWrapper1DWithTwoDerivs &f, double x0, double ftol, int maxiter, double xtol_rel = 1e-12){
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return Halley(&f, x0, ftol, maxiter, xtol_rel);
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}
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inline double Householder4(FuncWrapper1DWithThreeDerivs &f, double x0, double ftol, int maxiter, double xtol_rel = 1e-12){
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return Householder4(&f, x0, ftol, maxiter, xtol_rel);
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}
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// Multi-Dimensional solvers
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std::vector<double> NDNewtonRaphson_Jacobian(FuncWrapperND *f, const std::vector<double> &x0, double tol, int maxiter, double w = 1.0);
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}; /*namespace CoolProp*/
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#endif
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