uint.h

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// Copyright(c) 1993-1996 Tony Kirke
// author="Tony Kirke" *
/*
 * SPUC - Signal processing using C++ - A DSP library
 * 
 * This program 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, 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 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef UINT
#define UINT
#include <int_u.h>
namespace SPUC {
//
template <long Bits=32> class uint : public int_u
{
        public:
        bool overflow;

        uint<Bits>() { 
          bits=Bits;
          mask = -1 << Bits;
          overflow = 0;
        }
        uint<Bits>(long y) { 
          q = y;
          bits=Bits;
          mask = -1 << Bits;
          overflow = 0;
        }
        inline uint<Bits> operator =(const int_u& y) {   
          overflow = 0;
          q = y.q;
          if (  ((mask&q)!=mask) || ((mask&q)!=0) ) {
                q &= ~mask;
                overflow = 1;
          }
          return *this; 
        } 
        inline uint<Bits> operator =(const long& y) {   
          overflow = 0;
          if (bitpos) {
                if (y) q |= MASK_BIT(bitpos);
                else q &= ~MASK_BIT(bitpos);
                bitpos = 0;
          } else {
                q = y;  
                if (  ((mask&q)!=mask) || ((mask&q)!=0) ) {
                  q &= ~mask;
                  overflow = 1;
                }
          }
          return *this; 
        } 
        inline uint<Bits> operator ()(long i) { 
          bitpos = i;
          return *this;
        }
};
} // namespace SPUC 
#endif

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