/usr/include/oce/math_EigenValuesSearcher.hxx is in liboce-foundation-dev 0.17.1-1.
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_EigenValuesSearcher_HeaderFile
#define _math_EigenValuesSearcher_HeaderFile
#include <Standard.hxx>
#include <Standard_DefineAlloc.hxx>
#include <Standard_Macro.hxx>
#include <Handle_TColStd_HArray1OfReal.hxx>
#include <Standard_Boolean.hxx>
#include <Standard_Integer.hxx>
#include <Handle_TColStd_HArray2OfReal.hxx>
#include <Standard_Real.hxx>
#include <math_Vector.hxx>
class TColStd_HArray1OfReal;
class TColStd_HArray2OfReal;
class StdFail_NotDone;
class TColStd_Array1OfReal;
//! This class finds eigen values and vectors of
//! real symmetric tridiagonal matrix
class math_EigenValuesSearcher
{
public:
DEFINE_STANDARD_ALLOC
Standard_EXPORT math_EigenValuesSearcher(const TColStd_Array1OfReal& Diagonal, const TColStd_Array1OfReal& Subdiagonal);
//! Returns Standard_True if computation is performed
//! successfully.
Standard_EXPORT Standard_Boolean IsDone() const;
//! Returns the dimension of matrix
Standard_EXPORT Standard_Integer Dimension() const;
//! Returns the Index_th eigen value of matrix
//! Index must be in [1, Dimension()]
Standard_EXPORT Standard_Real EigenValue (const Standard_Integer Index) const;
//! Returns the Index_th eigen vector of matrix
//! Index must be in [1, Dimension()]
Standard_EXPORT math_Vector EigenVector (const Standard_Integer Index) const;
protected:
private:
Handle(TColStd_HArray1OfReal) myDiagonal;
Handle(TColStd_HArray1OfReal) mySubdiagonal;
Standard_Boolean myIsDone;
Standard_Integer myN;
Handle(TColStd_HArray1OfReal) myEigenValues;
Handle(TColStd_HArray2OfReal) myEigenVectors;
};
#endif // _math_EigenValuesSearcher_HeaderFile
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