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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
89 lines
2.3 KiB
C++
89 lines
2.3 KiB
C++
// Created on: 2005-12-15
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// Created by: Julia GERASIMOVA
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// Copyright (c) 2005-2014 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_EigenValuesSearcher_HeaderFile
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#define _math_EigenValuesSearcher_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 <TColStd_HArray1OfReal.hxx>
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#include <Standard_Boolean.hxx>
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#include <Standard_Integer.hxx>
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#include <TColStd_HArray2OfReal.hxx>
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#include <TColStd_Array1OfReal.hxx>
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#include <Standard_Real.hxx>
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#include <math_Vector.hxx>
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class StdFail_NotDone;
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//! This class finds eigen values and vectors of
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//! real symmetric tridiagonal matrix
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class math_EigenValuesSearcher
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{
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public:
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DEFINE_STANDARD_ALLOC
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Standard_EXPORT math_EigenValuesSearcher(const TColStd_Array1OfReal& Diagonal, const TColStd_Array1OfReal& Subdiagonal);
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//! Returns Standard_True if computation is performed
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//! successfully.
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Standard_EXPORT Standard_Boolean IsDone() const;
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//! Returns the dimension of matrix
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Standard_EXPORT Standard_Integer Dimension() const;
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//! Returns the Index_th eigen value of matrix
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//! Index must be in [1, Dimension()]
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Standard_EXPORT Standard_Real EigenValue (const Standard_Integer Index) const;
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//! Returns the Index_th eigen vector of matrix
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//! Index must be in [1, Dimension()]
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Standard_EXPORT math_Vector EigenVector (const Standard_Integer Index) const;
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protected:
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private:
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Handle(TColStd_HArray1OfReal) myDiagonal;
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Handle(TColStd_HArray1OfReal) mySubdiagonal;
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Standard_Boolean myIsDone;
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Standard_Integer myN;
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Handle(TColStd_HArray1OfReal) myEigenValues;
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Handle(TColStd_HArray2OfReal) myEigenVectors;
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};
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#endif // _math_EigenValuesSearcher_HeaderFile
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