source: trunk/lib/utility/utility.cc @ 570

// $Id: utility.cc 570 2006-04-05 13:09:49Z jari $

/*
  Copyright (C) 2005 Jari Häkkinen, Markus Ringnér
  Copyright (C) 2006 Jari Häkkinen

  This file is part of the thep c++ tools library,
                                http://lev.thep.lu.se/trac/c++_tools

  The c++ tools library 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.

  The c++ tools library 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
  General Public License for more details.

  You should have received a copy of the GNU 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.
*/

#include <c++_tools/utility/utility.h>

#include <c++_tools/utility/stl_utility.h>

#include <sstream>
#include <string>

namespace theplu {
namespace utility {

  bool is_double(const std::string& s)
  {
    std::stringstream ss(s);
    double a;
    return (ss>>a);
  }
  
  bool is_float(const std::string& s)
  {
    std::stringstream ss(s);
    float a;
    return (ss>>a);
  }

  bool is_int(const std::string& s)
  {
    std::stringstream ss(s);
    int a;
    return (ss>>a);
  }

  bool is_nan(const std::string& s)
  {
    std::stringstream ss(s);
    std::string s2;
    ss >> s2; // to trim surrounding whitespaces
    to_lower(s2);
    std::string nan("nan");
    return (nan==s2);
  }

}} // end of namespace utility and namespace thep