STK_Chrono.cpp

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/*--------------------------------------------------------------------*/
/*     Copyright (C) 2004-2007  Serge Iovleff

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU Lesser 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 Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser 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

    Contact : Serge.Iovleff@stkpp.org
*/

/*
 * Project:  Base
 * Purpose:  Utility for computing elapsed time.
 * Author:   Serge Iovleff, serge.iovleff@stkpp.org
 *
 **/

//#include <sys/time.h>
#include <ctime>

#include "../include/STK_Chrono.h"

namespace STK
{

namespace Chrono
{
  static clock_t t_start;

  static clock_t t_end;

  /* Start the Chrono. */
  void start() { t_start = clock(); }

  /* Compute the elapsed time from last start. */
  Real elapsed()
  {
    t_end = clock();
    return Real(Real(t_end - t_start)/CLOCKS_PER_SEC);
  }
} // namespace Chrono

} // namspace STK