/*!\file
  \brief Definition of AlgEqState class..

  $Id: alg_eq_state.h,v 1.3 2004/09/02 17:00:10 zs Exp $
*/



#include<config.h>
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#ifndef INCLUDED_ALG_EQ_STATE_H
#define INCLUDED_ALG_EQ_STATE_H

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#include <util/lattice.h>
#include <alg/alg_base.h>
#include <alg/common_arg.h>
#include <alg/eq_state_arg.h>
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//! Plaquette measurement 
/*!
  The normalised real trace of the average plaquette is measured in the
  hyperplane containing a specified direction and in the hyperplane
  perpendicular to that direction.

  On an anisotropic lattice, the specified direction must be the the
  anisotropic direction (why?).
*/
class AlgEqState : public Alg
{
 private:
    char *cname;

    EqStateArg *alg_eq_state_arg;
        // The argument structure for AlgEqState
 
    Float norm_fac;       
        // normalization factor

 public:
    AlgEqState(Lattice & latt, CommonArg *c_arg, EqStateArg *arg);

    virtual ~AlgEqState();

    //! Do the calculation.
    void run(void);
};



#endif





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