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/*
*
* This source code is part of
*
* G R O M A C S
*
* GROningen MAchine for Chemical Simulations
*
* VERSION 3.2.0
* Written by David van der Spoel, Erik Lindahl, Berk Hess, and others.
* Copyright (c) 1991-2000, University of Groningen, The Netherlands.
* Copyright (c) 2001-2004, The GROMACS development team,
* check out http://www.gromacs.org for more information.
* 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.
*
* If you want to redistribute modifications, please consider that
* scientific software is very special. Version control is crucial -
* bugs must be traceable. We will be happy to consider code for
* inclusion in the official distribution, but derived work must not
* be called official GROMACS. Details are found in the README & COPYING
* files - if they are missing, get the official version at www.gromacs.org.
*
* To help us fund GROMACS development, we humbly ask that you cite
* the papers on the package - you can find them in the top README file.
*
* For more info, check our website at http://www.gromacs.org
*
* And Hey:
* Gromacs Runs On Most of All Computer Systems
*/
#ifndef _macros_h
#define _macros_h
#include "typedefs.h" /* for real definition only */
#ifdef __cplusplus
extern "C" {
#endif
/*
* With the macros below you don't
* have to use an index if you don't wan't to. You can eg. use
* angle.C0[23] instead if angle.c[0][23].
* In a similar fashion, you can use angle.AI[3] instead of
* angle.a[0][3]
*/
#define AI a[0]
#define AJ a[1]
#define AK a[2]
#define AL a[3]
#define AM a[4]
#define C0 c[0]
#define C1 c[1]
#define C2 c[2]
#define C3 c[3]
#define C4 c[4]
#define C5 c[5]
#ifndef min
#define min(a,b) (((a) < (b)) ? (a) : (b) )
#endif
#ifndef max
#define max(a,b) (((a) > (b)) ? (a) : (b) )
#endif
#ifndef even
#define even(a) ( ( (a+1) / 2) == (a / 2) )
#endif
/* This macro calculates the size of a array */
#define asize(a) (sizeof(a)/sizeof((a)[0]))
extern const real ZERO;
extern const real THIRD;
extern const real HALF;
extern const real ONE;
extern const real TWO;
extern const real THREE;
extern const real SIX;
extern const real TEN;
extern const real TWELVE;
#ifdef __cplusplus
}
#endif
#endif /* _macros_h */
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