/usr/include/oce/math_Jacobi.hxx is in liboce-foundation-dev 0.17.2-2.
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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_Jacobi_HeaderFile
#define _math_Jacobi_HeaderFile
#include <Standard.hxx>
#include <Standard_DefineAlloc.hxx>
#include <Standard_Macro.hxx>
#include <Standard_Boolean.hxx>
#include <math_Matrix.hxx>
#include <Standard_Integer.hxx>
#include <math_Vector.hxx>
#include <Standard_Real.hxx>
#include <Standard_OStream.hxx>
class StdFail_NotDone;
class math_Matrix;
//! This class implements the Jacobi method to find the eigenvalues and
//! the eigenvectors of a real symmetric square matrix.
//! A sort of eigenvalues is done.
class math_Jacobi
{
public:
DEFINE_STANDARD_ALLOC
//! Given a Real n X n matrix A, this constructor computes all its
//! eigenvalues and eigenvectors using the Jacobi method.
//! The exception NotSquare is raised if the matrix is not square.
//! No verification that the matrix A is really symmetric is done.
Standard_EXPORT math_Jacobi(const math_Matrix& A);
//! Returns true if the computations are successful, otherwise returns false.
Standard_Boolean IsDone() const;
//! Returns the eigenvalues vector.
//! Exception NotDone is raised if calculation is not done successfully.
const math_Vector& Values() const;
//! returns the eigenvalue number Num.
//! Eigenvalues are in the range (1..n).
//! Exception NotDone is raised if calculation is not done successfully.
Standard_Real Value (const Standard_Integer Num) const;
//! returns the eigenvectors matrix.
//! Exception NotDone is raised if calculation is not done successfully.
const math_Matrix& Vectors() const;
//! Returns the eigenvector V of number Num.
//! Eigenvectors are in the range (1..n).
//! Exception NotDone is raised if calculation is not done successfully.
void Vector (const Standard_Integer Num, math_Vector& V) const;
//! Prints 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;
math_Matrix AA;
Standard_Integer NbRotations;
math_Vector EigenValues;
math_Matrix EigenVectors;
};
#include <math_Jacobi.lxx>
#endif // _math_Jacobi_HeaderFile
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