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42cf5bc1ca
Automatic upgrade of OCCT code by command "occt_upgrade . -nocdl": - WOK-generated header files from inc and sources from drv are moved to src - CDL files removed - All packages are converted to nocdlpack
120 lines
3.7 KiB
C++
120 lines
3.7 KiB
C++
// Created on: 1991-05-13
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// Created by: Laurent PAINNOT
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// Copyright (c) 1991-1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _math_DirectPolynomialRoots_HeaderFile
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#define _math_DirectPolynomialRoots_HeaderFile
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#include <Standard.hxx>
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#include <Standard_DefineAlloc.hxx>
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#include <Standard_Handle.hxx>
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#include <Standard_Boolean.hxx>
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#include <Standard_Integer.hxx>
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#include <Standard_Real.hxx>
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#include <Standard_OStream.hxx>
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class Standard_RangeError;
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class StdFail_InfiniteSolutions;
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//! This class implements the calculation of all the real roots of a real
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//! polynomial of degree <= 4 using a direct method. Once found,
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//! the roots are polished using the Newton method.
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class math_DirectPolynomialRoots
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{
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public:
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DEFINE_STANDARD_ALLOC
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//! computes all the real roots of the polynomial
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//! Ax4 + Bx3 + Cx2 + Dx + E using a direct method.
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Standard_EXPORT math_DirectPolynomialRoots(const Standard_Real A, const Standard_Real B, const Standard_Real C, const Standard_Real D, const Standard_Real E);
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//! computes all the real roots of the polynomial
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//! Ax3 + Bx2 + Cx + D using a direct method.
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Standard_EXPORT math_DirectPolynomialRoots(const Standard_Real A, const Standard_Real B, const Standard_Real C, const Standard_Real D);
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//! computes all the real roots of the polynomial
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//! Ax2 + Bx + C using a direct method.
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Standard_EXPORT math_DirectPolynomialRoots(const Standard_Real A, const Standard_Real B, const Standard_Real C);
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//! computes the real root of the polynomial Ax + B.
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Standard_EXPORT math_DirectPolynomialRoots(const Standard_Real A, const Standard_Real B);
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//! Returns true if the computations are successful, otherwise returns false.
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Standard_Boolean IsDone() const;
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//! Returns true if there is an infinity of roots, otherwise returns false.
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Standard_Boolean InfiniteRoots() const;
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//! returns the number of solutions.
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//! An exception is raised if there are an infinity of roots.
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Standard_Integer NbSolutions() const;
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//! returns the value of the Nieme root.
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//! An exception is raised if there are an infinity of roots.
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//! Exception RangeError is raised if Nieme is < 1
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//! or Nieme > NbSolutions.
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Standard_Real Value (const Standard_Integer Nieme) const;
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//! Prints on the stream o information on the current state
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//! of the object.
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//! Is used to redefine the operator <<.
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Standard_EXPORT void Dump (Standard_OStream& o) const;
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protected:
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Standard_EXPORT void Solve (const Standard_Real A, const Standard_Real B, const Standard_Real C, const Standard_Real D, const Standard_Real E);
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Standard_EXPORT void Solve (const Standard_Real A, const Standard_Real B, const Standard_Real C, const Standard_Real D);
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Standard_EXPORT void Solve (const Standard_Real A, const Standard_Real B, const Standard_Real C);
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Standard_EXPORT void Solve (const Standard_Real A, const Standard_Real B);
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private:
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Standard_Boolean Done;
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Standard_Boolean InfiniteStatus;
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Standard_Integer NbSol;
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Standard_Real TheRoots[4];
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};
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#include <math_DirectPolynomialRoots.lxx>
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#endif // _math_DirectPolynomialRoots_HeaderFile
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