forked from lijiext/lammps
72 lines
2.9 KiB
C++
72 lines
2.9 KiB
C++
/*
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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: vect4.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 VECT4_H
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#define VECT4_H
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#include "virtualcolmatrix.h"
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class Matrix;
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class Mat4x4;
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class Vect4 : public VirtualColMatrix {
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double elements[4];
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public:
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Vect4();
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~Vect4();
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Vect4(const Vect4& A); // copy constructor
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Vect4(const VirtualMatrix& A); // copy constructor
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double& operator_1int(int i); // array access
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double Get_1int(int i) const;
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void Set_1int(int i, double value);
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double BasicGet_1int(int i) const;
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void BasicSet_1int(int i, double value);
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void BasicIncrement_1int(int i, double value);
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void Const(double value);
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MatrixType GetType() const;
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std::ostream& WriteData(std::ostream& c) const;
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std::istream& ReadData(std::istream& c);
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void AssignVM(const VirtualMatrix& A);
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Vect4& operator=(const Vect4& A); // assignment operator
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Vect4& operator=(const VirtualMatrix& A); // overloaded =
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Vect4& operator*=(double b);
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friend Matrix T(const Vect4& A); // a wasteful transpose
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friend Mat4x4 CrossMat(Vect4& a); // a wasteful cross matrix implementation
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// fast matrix functions
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friend void FastAssign(Vect4& a, Vect4& c);
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friend void FastSimpleRotation(Vect4& v, double q, Mat4x4& d);
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friend void FastCross(Vect4& a, Vect4& b, Vect4& c); // cross product axb = c
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friend void FastTripleSum(Vect4& a, Vect4& b, Vect4& c, Vect4& d);
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friend void FastTripleSumPPM(Vect4& a, Vect4& b, Vect4& c, Vect4& d);
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friend void FastMult(Mat4x4& A, Vect4& B, Vect4& C);
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friend void FastTMult(Mat4x4& A, Vect4& B, Vect4& C);
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friend void FastNegMult(Mat4x4& A, Vect4& B, Vect4& C);
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friend void FastNegTMult(Mat4x4& A, Vect4& B, Vect4& C);
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friend void FastMult(double a, Vect4& B, Vect4& C);
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friend void FastAdd(Vect4& A, Vect4& B, Vect4& C);
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friend void FastSubt(Vect4& A, Vect4& B, Vect4& C);
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};
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#endif
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