sc_unsigned.h

system C源码 一种替代verilog的语言

    virtual ~sc_unsigned_bitref_r()
	{}

    // copy constructor

    sc_unsigned_bitref_r( const sc_unsigned_bitref_r& a )
	: m_index( a.m_index ), m_obj_p( a.m_obj_p )
	{}

    // capacity

    int length() const
	{ return 1; }


    // implicit conversion to bool

    operator uint64 () const;
    bool operator ! () const;
    bool operator ~ () const;


    // explicit conversions

    uint64 value() const
	{ return operator uint64(); }

    bool to_bool() const
	{ return operator uint64(); }


    // concatenation support

    virtual int concat_length(bool* xz_present_p) const
        { if ( xz_present_p ) *xz_present_p = false; return 1; }
    virtual uint64 concat_get_uint64() const
        { return (uint64)operator uint64(); }
    virtual bool concat_get_ctrl( sc_digit* dst_p, int low_i ) const
        {
            int  bit_mask = 1 << (low_i % BITS_PER_DIGIT);
            int  word_i = low_i / BITS_PER_DIGIT;
	    dst_p[word_i] &= ~bit_mask;
	    return false;
        }
    virtual bool concat_get_data( sc_digit* dst_p, int low_i ) const
        {
            int  bit_mask = 1 << (low_i % BITS_PER_DIGIT);
	    bool result;	// True if non-zero.
            int  word_i = low_i / BITS_PER_DIGIT;
            if ( operator uint64() )
	    {
                dst_p[word_i] |= bit_mask;
		result = true;
	    }
            else
	    {
                dst_p[word_i] &= ~bit_mask;
		result = false;
	    }
	    return result;
        }

    // other methods

    void print( ::std::ostream& os = ::std::cout ) const
	{ os << to_bool(); }

protected:

    int          m_index;
    sc_unsigned* m_obj_p;

private:

    // disabled
    const sc_unsigned_bitref_r& operator = ( const sc_unsigned_bitref_r& );
};



inline
::std::ostream&
operator << ( ::std::ostream&, const sc_unsigned_bitref_r& );


// ----------------------------------------------------------------------------
//  CLASS : sc_unsigned_bitref
//
//  Proxy class for sc_unsigned bit selection (r-value and l-value).
// ----------------------------------------------------------------------------

class sc_unsigned_bitref
    : public sc_unsigned_bitref_r
{
    friend class sc_unsigned;
    friend class sc_core::sc_vpool<sc_unsigned_bitref>;


protected: // construction

    sc_unsigned_bitref()
        {}

public:

    // copy constructor

    sc_unsigned_bitref( const sc_unsigned_bitref& a )
	: sc_unsigned_bitref_r( a )
	{}


    // assignment operators

    const sc_unsigned_bitref& operator = ( const sc_unsigned_bitref_r& );
    const sc_unsigned_bitref& operator = ( const sc_unsigned_bitref& );
    const sc_unsigned_bitref& operator = ( bool );

    const sc_unsigned_bitref& operator &= ( bool );
    const sc_unsigned_bitref& operator |= ( bool );
    const sc_unsigned_bitref& operator ^= ( bool );

    // concatenation methods

    virtual void concat_set(int64 src, int low_i);
    virtual void concat_set(const sc_signed& src, int low_i);
    virtual void concat_set(const sc_unsigned& src, int low_i);
    virtual void concat_set(uint64 src, int low_i);


    // other methods

    void scan( ::std::istream& is = ::std::cin );

protected:
    static sc_core::sc_vpool<sc_unsigned_bitref> m_pool;
};



inline
::std::istream&
operator >> ( ::std::istream&, sc_unsigned_bitref& );


// ----------------------------------------------------------------------------
//  CLASS : sc_unsigned_subref_r
//
//  Proxy class for sc_unsigned part selection (r-value only).
// ----------------------------------------------------------------------------

class sc_unsigned_subref_r : public sc_value_base
{
    friend class sc_signed;
    friend class sc_unsigned;
    friend class sc_unsigned_signal;

protected:

    // constructor

    sc_unsigned_subref_r()
	{}

    void initialize( const sc_unsigned* obj_p, int left_, int right_ )
	{
	    m_obj_p = CCAST<sc_unsigned*>( obj_p );
	    m_left = left_;
	    m_right = right_;
	}

public:

    // destructor

    virtual ~sc_unsigned_subref_r()
	{}


    // copy constructor

    sc_unsigned_subref_r( const sc_unsigned_subref_r& a )
	: m_left( a.m_left ), m_obj_p( a.m_obj_p ), m_right( a.m_right )
	{}


    // capacity

    int length() const
	{ return m_left >= m_right ? (m_left-m_right+1) : (m_right-m_left+1 ); }


    // implicit conversion to sc_unsigned

    operator sc_unsigned () const;


    // explicit conversions

    int           to_int() const;
    unsigned int  to_uint() const;
    long          to_long() const;
    unsigned long to_ulong() const;
    int64         to_int64() const;
    uint64        to_uint64() const;
    double        to_double() const;


    // explicit conversion to character string

    const std::string to_string( sc_numrep numrep = SC_DEC ) const;
    const std::string to_string( sc_numrep numrep, bool w_prefix ) const;


    // concatenation support

    virtual int concat_length(bool* xz_present_p) const
	{
	    if ( xz_present_p ) *xz_present_p = false;
	    return m_left - m_right + 1;
	}
    virtual uint64 concat_get_uint64() const;
    virtual bool concat_get_ctrl( sc_digit* dst_p, int low_i ) const;
    virtual bool concat_get_data( sc_digit* dst_p, int low_i ) const;

    // reduce methods

    bool and_reduce() const;
    bool nand_reduce() const;
    bool or_reduce() const;
    bool nor_reduce() const;
    bool xor_reduce() const ;
    bool xnor_reduce() const;

    // other methods

    void print( ::std::ostream& os = ::std::cout ) const
	{ os << to_string(sc_io_base(os,SC_DEC),sc_io_show_base(os)); }

protected:

    int          m_left;   // Left-most bit in this part selection.
    sc_unsigned* m_obj_p;  // Target of this part selection.
    int          m_right;  // Right-most bit in this part selection.

private:

    // disabled
    const sc_unsigned_subref_r& operator = ( const sc_unsigned_subref_r& );
};



inline
::std::ostream&
operator << ( ::std::ostream&, const sc_unsigned_subref_r& );


// ----------------------------------------------------------------------------
//  CLASS : sc_unsigned_subref
//
//  Proxy class for sc_unsigned part selection (r-value and l-value).
// ----------------------------------------------------------------------------

class sc_unsigned_subref
    : public sc_unsigned_subref_r
{
    friend class sc_unsigned;
    friend class sc_core::sc_vpool<sc_unsigned_subref>;


    // constructor

protected:
    sc_unsigned_subref()
	{}

public:

    // copy constructor

    sc_unsigned_subref( const sc_unsigned_subref& a )
	: sc_unsigned_subref_r( a )
	{}

    // assignment operators

    const sc_unsigned_subref& operator = ( const sc_unsigned_subref_r& a );
    const sc_unsigned_subref& operator = ( const sc_unsigned_subref& a );
    const sc_unsigned_subref& operator = ( const sc_unsigned& a );

    template<class T>
    const sc_unsigned_subref& operator = ( const sc_generic_base<T>& a );
    const sc_unsigned_subref& operator = ( const sc_signed_subref_r& a );
    const sc_unsigned_subref& operator = ( const sc_signed& a );

    const sc_unsigned_subref& operator = ( const char* a );
    const sc_unsigned_subref& operator = ( unsigned long a );
    const sc_unsigned_subref& operator = ( long a );

    const sc_unsigned_subref& operator = ( unsigned int a )
	{ return operator = ( (unsigned long) a ); }

    const sc_unsigned_subref& operator = ( int a )
	{ return operator = ( (long) a ); }

    const sc_unsigned_subref& operator = ( uint64 a );
    const sc_unsigned_subref& operator = ( int64 a );
    const sc_unsigned_subref& operator = ( double a );
    const sc_unsigned_subref& operator = ( const sc_int_base& a );
    const sc_unsigned_subref& operator = ( const sc_uint_base& a );

    // concatenation methods

    virtual void concat_set(int64 src, int low_i);