/usr/include/oce/math_FunctionRoot.hxx is in liboce-foundation-dev 0.17.2-2.
This file is owned by root:root, with mode 0o644.
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// Please do not edit this file; modify original file instead.
// The copyright and license terms as defined for the original file apply to
// this header file considered to be the "object code" form of the original source.
#ifndef _math_FunctionRoot_HeaderFile
#define _math_FunctionRoot_HeaderFile
#include <Standard.hxx>
#include <Standard_DefineAlloc.hxx>
#include <Standard_Macro.hxx>
#include <Standard_Boolean.hxx>
#include <Standard_Real.hxx>
#include <Standard_Integer.hxx>
#include <Standard_OStream.hxx>
class StdFail_NotDone;
class math_FunctionWithDerivative;
//! This class implements the computation of a root of a function of
//! a single variable which is near an initial guess using a minimization
//! algorithm.Knowledge of the derivative is required. The
//! algorithm used is the same as in
class math_FunctionRoot
{
public:
DEFINE_STANDARD_ALLOC
//! The Newton-Raphson method is done to find the root of the function F
//! from the initial guess Guess.The tolerance required on
//! the root is given by Tolerance. Iterations are stopped if
//! the expected solution does not stay in the range A..B.
//! The solution is found when abs(Xi - Xi-1) <= Tolerance;
//! The maximum number of iterations allowed is given by NbIterations.
Standard_EXPORT math_FunctionRoot(math_FunctionWithDerivative& F, const Standard_Real Guess, const Standard_Real Tolerance, const Standard_Integer NbIterations = 100);
//! The Newton-Raphson method is done to find the root of the function F
//! from the initial guess Guess.
//! The tolerance required on the root is given by Tolerance.
//! Iterations are stopped if the expected solution does not stay in the
//! range A..B
//! The solution is found when abs(Xi - Xi-1) <= Tolerance;
//! The maximum number of iterations allowed is given by NbIterations.
Standard_EXPORT math_FunctionRoot(math_FunctionWithDerivative& F, const Standard_Real Guess, const Standard_Real Tolerance, const Standard_Real A, const Standard_Real B, const Standard_Integer NbIterations = 100);
//! Returns true if the computations are successful, otherwise returns false.
Standard_Boolean IsDone() const;
//! returns the value of the root.
//! Exception NotDone is raised if the root was not found.
Standard_Real Root() const;
//! returns the value of the derivative at the root.
//! Exception NotDone is raised if the root was not found.
Standard_Real Derivative() const;
//! returns the value of the function at the root.
//! Exception NotDone is raised if the root was not found.
Standard_Real Value() const;
//! returns the number of iterations really done on the
//! computation of the Root.
//! Exception NotDone is raised if the root was not found.
Standard_Integer NbIterations() const;
//! Prints on the stream o information on the current state
//! of the object.
//! Is used to redefine the operator <<.
Standard_EXPORT void Dump (Standard_OStream& o) const;
protected:
private:
Standard_Boolean Done;
Standard_Real TheRoot;
Standard_Real TheError;
Standard_Real TheDerivative;
Standard_Integer NbIter;
};
#include <math_FunctionRoot.lxx>
#endif // _math_FunctionRoot_HeaderFile
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