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lammps/lib/poems/vect4.h
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vect4.h
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/*
*_________________________________________________________________________*
* POEMS: PARALLELIZABLE OPEN SOURCE EFFICIENT MULTIBODY SOFTWARE *
* DESCRIPTION: SEE READ-ME *
* FILE NAME: vect4.h *
* AUTHORS: See Author List *
* GRANTS: See Grants List *
* COPYRIGHT: (C) 2005 by Authors as listed in Author's List *
* LICENSE: Please see License Agreement *
* DOWNLOAD: Free at www.rpi.edu/~anderk5 *
* ADMINISTRATOR: Prof. Kurt Anderson *
* Computational Dynamics Lab *
* Rensselaer Polytechnic Institute *
* 110 8th St. Troy NY 12180 *
* CONTACT: anderk5@rpi.edu *
*_________________________________________________________________________*/
#ifndef VECT4_H
#define VECT4_H
#include "virtualcolmatrix.h"
class Matrix;
class Mat4x4;
class Vect4 : public VirtualColMatrix {
double elements[4];
public:
Vect4();
~Vect4();
Vect4(const Vect4& A); // copy constructor
Vect4(const VirtualMatrix& A); // copy constructor
double& operator_1int(int i); // array access
double Get_1int(int i) const;
void Set_1int(int i, double value);
double BasicGet_1int(int i) const;
void BasicSet_1int(int i, double value);
void BasicIncrement_1int(int i, double value);
void Const(double value);
MatrixType GetType() const;
std::ostream& WriteData(std::ostream& c) const;
std::istream& ReadData(std::istream& c);
void AssignVM(const VirtualMatrix& A);
Vect4& operator=(const Vect4& A); // assignment operator
Vect4& operator=(const VirtualMatrix& A); // overloaded =
Vect4& operator*=(double b);
friend Matrix T(const Vect4& A); // a wasteful transpose
friend Mat4x4 CrossMat(Vect4& a); // a wasteful cross matrix implementation
// fast matrix functions
friend void FastAssign(Vect4& a, Vect4& c);
friend void FastSimpleRotation(Vect4& v, double q, Mat4x4& d);
friend void FastCross(Vect4& a, Vect4& b, Vect4& c); // cross product axb = c
friend void FastTripleSum(Vect4& a, Vect4& b, Vect4& c, Vect4& d);
friend void FastTripleSumPPM(Vect4& a, Vect4& b, Vect4& c, Vect4& d);
friend void FastMult(Mat4x4& A, Vect4& B, Vect4& C);
friend void FastTMult(Mat4x4& A, Vect4& B, Vect4& C);
friend void FastNegMult(Mat4x4& A, Vect4& B, Vect4& C);
friend void FastNegTMult(Mat4x4& A, Vect4& B, Vect4& C);
friend void FastMult(double a, Vect4& B, Vect4& C);
friend void FastAdd(Vect4& A, Vect4& B, Vect4& C);
friend void FastSubt(Vect4& A, Vect4& B, Vect4& C);
};
#endif
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