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/*

xmd - molecular dynamics for metals and ceramics

By Jonathan Rifkin <jon.rifkin@uconn.edu>

Copyright 1995-2004 Jonathan Rifkin



This program is free software; you can redistribute it and/or

modify it under the terms of the GNU General Public License

as published by the Free Software Foundation; either version 2

of the License, or (at your option) any later version.



This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU General Public License for more details.



You should have received a copy of the GNU General Public License

along with this program; if not, write to the Free Software

Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/





#ifndef __CDVECT_H

#define __CDVECT_H





/*

------------------------------------------------------------------------

Defines

------------------------------------------------------------------------

*/

#define X 0

#define Y 1

#define Z 2

#define NDIR 3



/*

------------------------------------------------------------------------

Exported function prototypes

------------------------------------------------------------------------

*/

double GetMagnitude  (double v[NDIR]);



void   Normalize     (double v[NDIR]);



double GetDot        (double a[NDIR], double b[NDIR]);



void   Orthogonalize (double a[NDIR], double b[NDIR]);



void   CalcCross     (double c[NDIR], double a[NDIR], double b[NDIR]);



void   TransposeMatrix(double a[NDIR][NDIR]);



void   MatrixVectorMult (double c[NDIR], double a[NDIR][NDIR], double b[NDIR]);



void   MatrixVectorMultN

(double(*)[NDIR], double[NDIR][NDIR], double(*)[NDIR], int);



void   MatrixMatrixMult 

(

double [NDIR][NDIR],

double [NDIR][NDIR],

double [NDIR][NDIR]

);



void MakeRotationMatrix 

(double [NDIR][NDIR], double [NDIR], double [NDIR]);



void CopyMatrix (double [NDIR][NDIR], double [NDIR][NDIR]);



void CopyVector (double [NDIR], double [NDIR]);



void InvertMatrix (double[NDIR][NDIR], double [NDIR][NDIR]);



#endif