numericdatum.h

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/*
 *  numericdatum.h
 *
 *  This file is part of NEST.
 *
 *  Copyright (C) 2004 The NEST Initiative
 *
 *  NEST 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.
 *
 *  NEST 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 NEST.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef NUMERICDATUM_H
#define NUMERICDATUM_H
/* 
    Datum template for numeric data types
*/

#include "genericdatum.h"
#include "allocator.h"



// prefixed all references to members of GenericDatum with this->,
// since HP's aCC otherwise complains about them not being declared
// according to ISO Standard Sec. 14.6.2(3) [temp.dep]
// HEP, 2001-08-08

template<class D, SLIType *slt>
class NumericDatum: public GenericDatum<D,slt>
{
 protected:
  static sli::pool memory;
  using GenericDatum<D,slt>::d;

 private:
  Datum *clone(void) const
    {
      return new NumericDatum<D,slt>(*this);    
    }

public:
    
  NumericDatum() { d = (D) 0;}
  NumericDatum(const D& d_s) {d=d_s;}
    virtual ~NumericDatum() {}
    
    operator D() const
    {return d;}

    operator D& () 
    {return d;}

  void  input_form(std::ostream &) const;
  void  pprint(std::ostream &) const;


  static void * operator new(size_t size)
    {
      if(size != memory.size_of())
    return ::operator new(size);
      return memory.alloc();
    }

  static void operator delete(void *p, size_t size)
    {
      if(p == NULL)
    return;
      if(size != memory.size_of())
      {
    ::operator delete(p);
    return;
      }
      memory.free(p);
    }

};

#endif