sc_bigint.h

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  The following code is derived, directly or indirectly, from the SystemC
  source code Copyright (c) 1996-2014 by all Contributors.
  All Rights reserved.

  The contents of this file are subject to the restrictions and limitations
  set forth in the SystemC Open Source License (the "License");
  You may not use this file except in compliance with such restrictions and
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  License at http://www.accellera.org/. Software distributed by Contributors
  under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF
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/*****************************************************************************

  sc_bigint.h -- Template version of sc_signed. This class enables
                 compile-time bit widths for sc_signed numbers.

  Original Author: Ali Dasdan, Synopsys, Inc.

 *****************************************************************************/

/*****************************************************************************

  MODIFICATION LOG - modifiers, enter your name, affiliation, date and
  changes you are making here.

      Name, Affiliation, Date: Gene Bushayev, Synopsys, Inc.
  Description of Modification: - Interface between sc_bigint and sc_bv/sc_lv.

      Name, Affiliation, Date:
  Description of Modification:

 *****************************************************************************/

// $Log: sc_bigint.h,v $
// Revision 1.2  2011/02/18 20:19:14  acg
//  Andy Goodrich: updating Copyright notice.
//
// Revision 1.1.1.1  2006/12/15 20:20:05  acg
// SystemC 2.3
//
// Revision 1.3  2006/01/13 18:49:31  acg
// Added $Log command so that CVS check in comments are reproduced in the
// source.
//

#ifndef SC_BIGINT_H
#define SC_BIGINT_H


#include "sysc/datatypes/int/sc_signed.h"
#include "sysc/datatypes/int/sc_unsigned.h"

namespace sc_dt
{

// classes defined in this module
template <int W> class sc_bigint;

// forward class declarations
class sc_bv_base;
class sc_lv_base;
class sc_fxval;
class sc_fxval_fast;
class sc_fxnum;
class sc_fxnum_fast;


// ----------------------------------------------------------------------------
//  CLASS TEMPLATE : sc_bigint<W>
//
//  Arbitrary size signed integer type.
// ----------------------------------------------------------------------------

#ifdef SC_MAX_NBITS
template< int W = SC_MAX_NBITS >
#else
template< int W >
#endif
class sc_bigint
    : public sc_signed
{
public:

    // constructors

    sc_bigint()
        : sc_signed( W )
        {}

    sc_bigint( const sc_bigint<W>& v )
        : sc_signed( W )
        { *this = v; }

    sc_bigint( const sc_signed& v )
        : sc_signed( W )
        { *this = v; }

    sc_bigint( const sc_signed_subref& v )
        : sc_signed( W )
        { *this = v; }

    template< class T >
    sc_bigint( const sc_generic_base<T>& a )
        : sc_signed( W )
        { a->to_sc_signed(*this); }

    sc_bigint( const sc_unsigned& v )
        : sc_signed( W )
        { *this = v; }

    sc_bigint( const sc_unsigned_subref& v )
        : sc_signed( W )
        { *this = v; }

    sc_bigint( const char* v )
        : sc_signed( W )
        { *this = v; }

    sc_bigint( int64 v )
        : sc_signed( W )
        { *this = v; }

    sc_bigint( uint64 v )
        : sc_signed( W )
        { *this = v; }

    sc_bigint( long v )
        : sc_signed( W )
        { *this = v; }

    sc_bigint( unsigned long v )
        : sc_signed( W )
        { *this = v; }

    sc_bigint( int v )
        : sc_signed( W )
        { *this = v; }

    sc_bigint( unsigned int v )
        : sc_signed( W )
        { *this = v; }

    sc_bigint( double v )
        : sc_signed( W )
        { *this = v; }
  
    sc_bigint( const sc_bv_base& v )
        : sc_signed( W )
        { *this = v; }

    sc_bigint( const sc_lv_base& v )
        : sc_signed( W )
        { *this = v; }

#ifdef SC_INCLUDE_FX

    explicit sc_bigint( const sc_fxval& v )
        : sc_signed( W )
        { *this = v; }

    explicit sc_bigint( const sc_fxval_fast& v )
        : sc_signed( W )
        { *this = v; }

    explicit sc_bigint( const sc_fxnum& v )
        : sc_signed( W )
        { *this = v; }

    explicit sc_bigint( const sc_fxnum_fast& v )
        : sc_signed( W )
        { *this = v; }

#endif


#ifndef SC_MAX_NBITS

    // destructor

    ~sc_bigint()
        {}

#endif
 
    // assignment operators

    sc_bigint<W>& operator = ( const sc_bigint<W>& v )
        { sc_signed::operator = ( v ); return *this; }

    sc_bigint<W>& operator = ( const sc_signed& v )
        { sc_signed::operator = ( v ); return *this; }

    sc_bigint<W>& operator = (const sc_signed_subref& v )
        { sc_signed::operator = ( v ); return *this; }

    template< class T >
    sc_bigint<W>& operator = ( const sc_generic_base<T>& a )
        { a->to_sc_signed(*this); return *this;}

    sc_bigint<W>& operator = ( const sc_unsigned& v )
        { sc_signed::operator = ( v ); return *this; }

    sc_bigint<W>& operator = ( const sc_unsigned_subref& v )
        { sc_signed::operator = ( v ); return *this; }

    sc_bigint<W>& operator = ( const char* v )
        { sc_signed::operator = ( v ); return *this; }

    sc_bigint<W>& operator = ( int64 v )
        { sc_signed::operator = ( v ); return *this; }

    sc_bigint<W>& operator = ( uint64 v )
        { sc_signed::operator = ( v ); return *this; }

    sc_bigint<W>& operator = ( long v )
        { sc_signed::operator = ( v ); return *this; }

    sc_bigint<W>& operator = ( unsigned long v )
        { sc_signed::operator = ( v ); return *this; }

    sc_bigint<W>& operator = ( int v )
        { sc_signed::operator = ( v ); return *this; }

    sc_bigint<W>& operator = ( unsigned int v )
        { sc_signed::operator = ( v ); return *this; }

    sc_bigint<W>& operator = ( double v )
        { sc_signed::operator = ( v ); return *this; }


    sc_bigint<W>& operator = ( const sc_bv_base& v )
        { sc_signed::operator = ( v ); return *this; }

    sc_bigint<W>& operator = ( const sc_lv_base& v )
        { sc_signed::operator = ( v ); return *this; }

    sc_bigint<W>& operator = ( const sc_int_base& v )
        { sc_signed::operator = ( v ); return *this; }

    sc_bigint<W>& operator = ( const sc_uint_base& v )
        { sc_signed::operator = ( v ); return *this; }

#ifdef SC_INCLUDE_FX

    sc_bigint<W>& operator = ( const sc_fxval& v )
        { sc_signed::operator = ( v ); return *this; }

    sc_bigint<W>& operator = ( const sc_fxval_fast& v )
        { sc_signed::operator = ( v ); return *this; }

    sc_bigint<W>& operator = ( const sc_fxnum& v )
        { sc_signed::operator = ( v ); return *this; }

    sc_bigint<W>& operator = ( const sc_fxnum_fast& v )
        { sc_signed::operator = ( v ); return *this; }

#endif
};

} // namespace sc_dt


#endif