STK_Arithmetic.h

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/*--------------------------------------------------------------------*/
/*     Copyright (C) 2004-2016  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 : S..._Dot_I..._At_stkpp_Dot_org (see copyright for ...)
*/
 
/*
 * Project:  STKernel::Arithmetic
 * Purpose:  DSefine template arithmetic for handling special values (NA).
 * Author:   Serge Iovleff, S..._Dot_I..._At_stkpp_Dot_org (see copyright for ...)
 **/
 
#ifndef STK_ARITHMETIC_H
#define STK_ARITHMETIC_H
 
#include <limits>
 
namespace STK
{
 
template<class Type>
struct Arithmetic: public std::numeric_limits<Type>
{
  static const bool hasNA = false;
  static inline Type NA() throw() { return static_cast<Type>(0);}
  static inline bool isNA(Type const& x) throw() { return false;}
  static inline bool isInfinite(Type const& x) throw() { return false; }
  static inline bool isFinite(Type const& x) throw() { return (!isNA(x) && !isInfinite(x));}
};
 
template<class Type>
bool isNA(Type const& x) { return Arithmetic<Type>::isNA(x);}
 
template<class Type>
bool isFinite(Type const& x) { return Arithmetic<Type>::isFinite(x);}
 
template<class Type>
bool isInfinite(Type const& x) { return Arithmetic<Type>::isInfinite(x);}
 
} // namespace STK
 
#endif /* STK_ARITHMETIC_H */