forked from lijiext/lammps
77 lines
3.0 KiB
C
77 lines
3.0 KiB
C
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/*
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*_________________________________________________________________________*
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* POEMS: PARALLELIZABLE OPEN SOURCE EFFICIENT MULTIBODY SOFTWARE *
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* DESCRIPTION: SEE READ-ME *
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* FILE NAME: mat6x6.h *
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* AUTHORS: See Author List *
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* GRANTS: See Grants List *
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* COPYRIGHT: (C) 2005 by Authors as listed in Author's List *
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* LICENSE: Please see License Agreement *
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* DOWNLOAD: Free at www.rpi.edu/~anderk5 *
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* ADMINISTRATOR: Prof. Kurt Anderson *
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* Computational Dynamics Lab *
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* Rensselaer Polytechnic Institute *
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* 110 8th St. Troy NY 12180 *
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* CONTACT: anderk5@rpi.edu *
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*_________________________________________________________________________*/
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#ifndef MAT6X6_H
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#define MAT6X6_H
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#include "virtualmatrix.h"
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class Matrix;
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class Mat3x3;
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class Vect6;
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class Vect3;
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class Mat6x6 : public VirtualMatrix {
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double elements[6][6];
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public:
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Mat6x6();
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~Mat6x6();
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Mat6x6(const Mat6x6& A); // copy constructor
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Mat6x6(const VirtualMatrix& A); // copy constructor
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double& operator_2int(int i, int j); // array access
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double Get_2int(int i, int j) const;
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void Set_2int(int i, int j, double value);
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double BasicGet_2int(int i, int j) const;
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void BasicSet_2int(int i, int j, double value);
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void BasicIncrement_2int(int i, int j, double value);
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void Const(double value);
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MatrixType GetType() const;
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std::istream& ReadData(std::istream& c); // input
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std::ostream& WriteData(std::ostream& c) const; // output
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void AssignVM(const VirtualMatrix& A);
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Mat6x6& operator=(const Mat6x6& A); // assignment operator
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Mat6x6& operator=(const VirtualMatrix& A); // overloaded =
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Mat6x6& operator*=(double b);
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Mat6x6& Identity();
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friend Mat6x6 T(const Mat6x6& A); // a wasteful transpose
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// fast matrix operations
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friend void FastAdd(Mat6x6& A, Mat6x6& B, Mat6x6& C);
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friend void FastSubt(Mat6x6& A, Mat6x6& B, Mat6x6& C);
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friend void FastMultT(Matrix& A, Matrix& B, Mat6x6& C);
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friend void FastMult(Mat6x6& A, Mat6x6& B, Mat6x6& C); // C = A*B
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friend void FastMult(Mat6x6& A, Matrix& B, Matrix& C);
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friend void FastMultT(Mat6x6& A, Mat6x6& B, Mat6x6& C); // C = A*B^T
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friend void FastTMult(Mat6x6& A, Mat6x6& B, Mat6x6& C); // C = A^T*B
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friend void FastMult(Mat6x6& A, Vect6& B, Vect6& C);
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friend void FastTMult(Mat6x6& A, Vect6& B, Vect6& C);
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friend void FastLDLT(Mat6x6& A, Mat6x6& C);
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friend void FastLDLTSubs(Mat6x6& LD, Mat6x6& B, Mat6x6& C);
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friend void FastLDLTSubs(Mat6x6& LD, Vect6& B, Vect6& C);
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friend void OnPopulateSC(Vect3& gamma, Mat3x3& C, Mat6x6& SC);
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friend void OnPopulateSI(Mat3x3& inertia, double mass, Mat6x6& sI);
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};
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#endif
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