STK_Binary.h

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/*--------------------------------------------------------------------*/
/*     Copyright (C) 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:  Define the fundamental type Binary.
 * Author:   Serge Iovleff, serge.iovleff@stkpp.org
 *
 **/

#ifndef STK_BINARY_H
#define STK_BINARY_H

#include "STK_Arithmetic.h"
#include "STK_IdTypeImpl.h"
#include "STK_Stream.h"
#include "STK_Proxy.h"

namespace STK
{

 enum Binary
 { zero =0, 
   one  =1, 
   binaryNA 
 };

 template<>
 struct Arithmetic<Binary> : public std::numeric_limits<Binary>
 {
   static Binary NA() throw()
   { return binaryNA;}

   static const bool hasNA = true;

   static bool isNA(const Binary& x) throw()
   { return (x==binaryNA);}
     
   static bool isInfinite(const Binary& x) throw()
   { return false; }

   static bool isFinite(const Binary& x) throw()
   { return (!isNA(x) && !isInfinite(x));}
 };

template<>
struct IdTypeImpl<Binary>
{
  static IdType returnType()
  { return(binary);}
};
  
ostream& operator << (ostream& os, const Binary& output);

istream& operator >> (istream& is, Proxy<Binary>& input);

} // namespace STK

#endif /*STK_BINARY_H*/