/*
 * $Id: ewald.h,v 1.11 2003/11/17 21:50:40 spoel Exp $
 * 
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 * Written by David van der Spoel, Erik Lindahl, Berk Hess, and others.
 * Copyright (c) 1991-2000, University of Groningen, The Netherlands.
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#ifndef _ewald_h
#define _ewald_h

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdio.h>
#include "typedefs.h"
#include "gmxcomplex.h"
#include "fftgrid.h"

extern real calc_ewaldcoeff(real rc,real dtol);
/* Determines the Ewald parameter, both for Ewald and PME */

extern real do_ewald(FILE *log,       bool bVerbose,
		     t_inputrec *ir,
		    rvec x[],        rvec f[],
		    real charge[],   rvec box,
		     t_commrec *cr,  t_nsborder *nsb,
		     matrix lrvir, real ewaldcoeff);
/* Do an Ewald calculation for the long range electrostatics. */
 
#endif


