fix_nvt_eff.cpp
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	/* ----------------------------------------------------------------------
	LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
	http://lammps.sandia.gov, Sandia National Laboratories
	Steve Plimpton, sjplimp@sandia.gov

	Copyright (2003) Sandia Corporation. Under the terms of Contract
	DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
	certain rights in this software. This software is distributed under
	the GNU General Public License.

	See the README file in the top-level LAMMPS directory.
	------------------------------------------------------------------------- */

	#include "string.h"
	#include "math.h"
	#include "fix_nvt_eff.h"
	#include "group.h"
	#include "modify.h"
	#include "error.h"

	using namespace LAMMPS_NS;

	/* ---------------------------------------------------------------------- */

	FixNVTEff::FixNVTEff(LAMMPS lmp, int narg, char *arg) :
	FixNHEff(lmp, narg, arg)
	{
	if (!tstat_flag)
	error->all("Temperature control must be used with fix nvt/eff");
	if (pstat_flag)
	error->all("Pressure control can not be used with fix nvt/eff");

	// create a new compute temp style
	// id = fix-ID + temp

	int n = strlen(id) + 6;
	id_temp = new char[n];
	strcpy(id_temp,id);
	strcat(id_temp,"_temp");

	char *newarg = new char[3];
	newarg[0] = id_temp;
	newarg[1] = group->names[igroup];
	newarg[2] = (char *) "temp/eff";

	modify->add_compute(3,newarg);
	delete [] newarg;
	tflag = 1;
	}