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// This file is generated by WOK (CPPExt).
// 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_DirectPolynomialRoots_HeaderFile
#define _math_DirectPolynomialRoots_HeaderFile
#include <Standard.hxx>
#include <Standard_DefineAlloc.hxx>
#include <Standard_Macro.hxx>
#include <Standard_Boolean.hxx>
#include <Standard_Integer.hxx>
#include <Standard_Real.hxx>
#include <Standard_OStream.hxx>
class Standard_RangeError;
class StdFail_InfiniteSolutions;
//! This class implements the calculation of all the real roots of a real
//! polynomial of degree <= 4 using a direct method. Once found,
//! the roots are polished using the Newton method.
class math_DirectPolynomialRoots
{
public:
DEFINE_STANDARD_ALLOC
//! computes all the real roots of the polynomial
//! Ax4 + Bx3 + Cx2 + Dx + E using a direct method.
Standard_EXPORT math_DirectPolynomialRoots(const Standard_Real A, const Standard_Real B, const Standard_Real C, const Standard_Real D, const Standard_Real E);
//! computes all the real roots of the polynomial
//! Ax3 + Bx2 + Cx + D using a direct method.
Standard_EXPORT math_DirectPolynomialRoots(const Standard_Real A, const Standard_Real B, const Standard_Real C, const Standard_Real D);
//! computes all the real roots of the polynomial
//! Ax2 + Bx + C using a direct method.
Standard_EXPORT math_DirectPolynomialRoots(const Standard_Real A, const Standard_Real B, const Standard_Real C);
//! computes the real root of the polynomial Ax + B.
Standard_EXPORT math_DirectPolynomialRoots(const Standard_Real A, const Standard_Real B);
//! Returns true if the computations are successful, otherwise returns false.
Standard_Boolean IsDone() const;
//! Returns true if there is an infinity of roots, otherwise returns false.
Standard_Boolean InfiniteRoots() const;
//! returns the number of solutions.
//! An exception is raised if there are an infinity of roots.
Standard_Integer NbSolutions() const;
//! returns the value of the Nieme root.
//! An exception is raised if there are an infinity of roots.
//! Exception RangeError is raised if Nieme is < 1
//! or Nieme > NbSolutions.
Standard_Real Value (const Standard_Integer Nieme) 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:
Standard_EXPORT void Solve (const Standard_Real A, const Standard_Real B, const Standard_Real C, const Standard_Real D, const Standard_Real E) ;
Standard_EXPORT void Solve (const Standard_Real A, const Standard_Real B, const Standard_Real C, const Standard_Real D) ;
Standard_EXPORT void Solve (const Standard_Real A, const Standard_Real B, const Standard_Real C) ;
Standard_EXPORT void Solve (const Standard_Real A, const Standard_Real B) ;
private:
Standard_Boolean Done;
Standard_Boolean InfiniteStatus;
Standard_Integer NbSol;
Standard_Real TheRoots[4];
};
#include <math_DirectPolynomialRoots.lxx>
#endif // _math_DirectPolynomialRoots_HeaderFile
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