sc_fxval.hh

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  with this work for additional information regarding copyright ownership.
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/*****************************************************************************

  sc_fxval.h -

  Original Author: Martin Janssen, Synopsys, Inc.

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

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  MODIFICATION LOG - modifiers, enter your name, affiliation, date and
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// $Log: sc_fxval.h,v $
// Revision 1.3  2011/01/19 18:57:40  acg
//  Andy Goodrich: changes for IEEE_1666_2011.
//
// Revision 1.2  2010/12/07 20:09:08  acg
// Andy Goodrich: Philipp Hartmann's constructor disambiguation fix
//
// Revision 1.1.1.1  2006/12/15 20:20:04  acg
// SystemC 2.3
//
// Revision 1.3  2006/01/13 18:53:58  acg
// Andy Goodrich: added $Log command so that CVS comments are reproduced in
// the source.
//

#ifndef __SYSTEMC_EXT_DT_FX_SC_FXVAL_HH__
#define __SYSTEMC_EXT_DT_FX_SC_FXVAL_HH__

#include <iostream>

#include "../int/sc_int_base.hh"
#include "../int/sc_signed.hh"
#include "../int/sc_uint_base.hh"
#include "../int/sc_unsigned.hh"
#include "sc_fxval_observer.hh"
#include "scfx_rep.hh"

#define SCFX_EXPLICIT_ explicit
#define SCFX_EXPLICIT_OTHER_ explicit

namespace sc_dt
{

// classes defined in this module
class sc_fxval;
class sc_fxval_fast;

// forward class declarations
class sc_fxnum;
class sc_fxnum_fast;


// ----------------------------------------------------------------------------
//  CLASS : sc_fxval
//
//  Fixed-point value type; arbitrary precision.
// ----------------------------------------------------------------------------

class sc_fxval
{
    friend class sc_fxnum;

  protected:
    sc_fxval_observer* observer() const;

  public:
    // internal use only;
    explicit sc_fxval(scfx_rep *);

    explicit sc_fxval(sc_fxval_observer * =0);
    explicit sc_fxval(int, sc_fxval_observer * =0);
    explicit sc_fxval(unsigned int, sc_fxval_observer * =0);
    explicit sc_fxval(long, sc_fxval_observer * =0);
    explicit sc_fxval(unsigned long, sc_fxval_observer * =0);
    explicit sc_fxval(float, sc_fxval_observer* = 0);
    explicit sc_fxval(double, sc_fxval_observer* = 0);
    explicit sc_fxval(const char *, sc_fxval_observer* = 0);
    sc_fxval(const sc_fxval &, sc_fxval_observer* = 0);
    sc_fxval(const sc_fxval_fast &, sc_fxval_observer* = 0);
    sc_fxval(const sc_fxnum &, sc_fxval_observer* = 0);
    sc_fxval(const sc_fxnum_fast &, sc_fxval_observer* = 0);

    explicit sc_fxval(int64, sc_fxval_observer* = 0);
    explicit sc_fxval(uint64, sc_fxval_observer* = 0);
    explicit sc_fxval(const sc_int_base &, sc_fxval_observer* = 0);
    explicit sc_fxval(const sc_uint_base &, sc_fxval_observer* = 0);
    explicit sc_fxval(const sc_signed &, sc_fxval_observer* = 0);
    explicit sc_fxval(const sc_unsigned &, sc_fxval_observer* = 0);

    ~sc_fxval();

    // internal use only;
    const scfx_rep *get_rep() const;
    void set_rep(scfx_rep *);

    // unary operators
    const sc_fxval operator - () const;
    const sc_fxval &operator + () const;

    // unary functions
    friend void neg(sc_fxval &, const sc_fxval &);

    // binary operators
#define DECL_BIN_OP_T(op,tp) \
    friend const sc_fxval operator op (const sc_fxval &, tp); \
    friend const sc_fxval operator op (tp, const sc_fxval &);

#define DECL_BIN_OP_OTHER(op) \
    DECL_BIN_OP_T(op, int64) \
    DECL_BIN_OP_T(op, uint64) \
    DECL_BIN_OP_T(op, const sc_int_base &) \
    DECL_BIN_OP_T(op, const sc_uint_base &) \
    DECL_BIN_OP_T(op, const sc_signed &) \
    DECL_BIN_OP_T(op, const sc_unsigned &)

#define DECL_BIN_OP(op, dummy) \
    friend const sc_fxval operator op (const sc_fxval &, const sc_fxval &); \
    DECL_BIN_OP_T(op, int) \
    DECL_BIN_OP_T(op, unsigned int) \
    DECL_BIN_OP_T(op, long) \
    DECL_BIN_OP_T(op, unsigned long) \
    DECL_BIN_OP_T(op, float) \
    DECL_BIN_OP_T(op, double) \
    DECL_BIN_OP_T(op, const char *) \
    DECL_BIN_OP_T(op, const sc_fxval_fast &) \
    DECL_BIN_OP_T(op, const sc_fxnum_fast &) \
    DECL_BIN_OP_OTHER(op)

    DECL_BIN_OP(*, mult)
    DECL_BIN_OP(+, add)
    DECL_BIN_OP(-, sub)
// declaration below doesn't compile with BCB5 (E2206)
//    DECL_BIN_OP(/, div)
// previous macro expanded
    friend const sc_fxval operator / (const sc_fxval &, const sc_fxval &);
    DECL_BIN_OP_T(/, int)
    DECL_BIN_OP_T(/, unsigned int)
    DECL_BIN_OP_T(/, long)
    DECL_BIN_OP_T(/, unsigned long)
    DECL_BIN_OP_T(/, float)
    DECL_BIN_OP_T(/, double)
    DECL_BIN_OP_T(/, const char *)
    DECL_BIN_OP_T(/, const sc_fxval_fast &)
    DECL_BIN_OP_T(/, const sc_fxnum_fast &)
//    DECL_BIN_OP_OTHER(/)

    DECL_BIN_OP_T(/, int64)
    DECL_BIN_OP_T(/, uint64)
    DECL_BIN_OP_T(/, const sc_int_base &)
    DECL_BIN_OP_T(/, const sc_uint_base &)
    DECL_BIN_OP_T(/, const sc_signed &)
    DECL_BIN_OP_T(/, const sc_unsigned &)

#undef DECL_BIN_OP_T
#undef DECL_BIN_OP_OTHER
#undef DECL_BIN_OP

    friend const sc_fxval operator << (const sc_fxval &, int);
    friend const sc_fxval operator >> (const sc_fxval &, int);

    // binary functions
#define DECL_BIN_FNC_T(fnc, tp) \
    friend void fnc (sc_fxval &, const sc_fxval &, tp); \
    friend void fnc (sc_fxval &, tp, const sc_fxval &);

#define DECL_BIN_FNC_OTHER(fnc) \
    DECL_BIN_FNC_T(fnc, int64) \
    DECL_BIN_FNC_T(fnc, uint64) \
    DECL_BIN_FNC_T(fnc, const sc_int_base &) \
    DECL_BIN_FNC_T(fnc, const sc_uint_base &) \
    DECL_BIN_FNC_T(fnc, const sc_signed &) \
    DECL_BIN_FNC_T(fnc, const sc_unsigned &)

#define DECL_BIN_FNC(fnc) \
    friend void fnc (sc_fxval &, const sc_fxval &, const sc_fxval &); \
    DECL_BIN_FNC_T(fnc, int) \
    DECL_BIN_FNC_T(fnc, unsigned int) \
    DECL_BIN_FNC_T(fnc, long) \
    DECL_BIN_FNC_T(fnc, unsigned long) \
    DECL_BIN_FNC_T(fnc, float) \
    DECL_BIN_FNC_T(fnc, double) \
    DECL_BIN_FNC_T(fnc, const char *) \
    DECL_BIN_FNC_T(fnc, const sc_fxval_fast &) \
    DECL_BIN_FNC_T(fnc, const sc_fxnum_fast &) \
    DECL_BIN_FNC_OTHER(fnc)

    DECL_BIN_FNC(mult)
    DECL_BIN_FNC(div)
    DECL_BIN_FNC(add)
    DECL_BIN_FNC(sub)

#undef DECL_BIN_FNC_T
#undef DECL_BIN_FNC_OTHER
#undef DECL_BIN_FNC

    friend void lshift(sc_fxval &, const sc_fxval &, int);
    friend void rshift(sc_fxval &, const sc_fxval &, int);

    // relational (including equality) operators
#define DECL_REL_OP_T(op, tp) \
    friend bool operator op (const sc_fxval &, tp); \
    friend bool operator op (tp, const sc_fxval &);

#define DECL_REL_OP_OTHER(op) \
    DECL_REL_OP_T(op, int64) \
    DECL_REL_OP_T(op, uint64) \
    DECL_REL_OP_T(op, const sc_int_base &) \
    DECL_REL_OP_T(op, const sc_uint_base &) \
    DECL_REL_OP_T(op, const sc_signed &) \
    DECL_REL_OP_T(op, const sc_unsigned &)

#define DECL_REL_OP(op) \
    friend bool operator op (const sc_fxval &, const sc_fxval &); \
    DECL_REL_OP_T(op, int) \
    DECL_REL_OP_T(op, unsigned int) \
    DECL_REL_OP_T(op, long) \
    DECL_REL_OP_T(op, unsigned long) \
    DECL_REL_OP_T(op, float) \
    DECL_REL_OP_T(op, double) \
    DECL_REL_OP_T(op, const char *) \
    DECL_REL_OP_T(op, const sc_fxval_fast &) \
    DECL_REL_OP_T(op, const sc_fxnum_fast &) \
    DECL_REL_OP_OTHER(op)

    DECL_REL_OP(<)
    DECL_REL_OP(<=)
    DECL_REL_OP(>)
    DECL_REL_OP(>=)
    DECL_REL_OP(==)
    DECL_REL_OP(!=)

#undef DECL_REL_OP_T
#undef DECL_REL_OP_OTHER
#undef DECL_REL_OP

    // assignment operators
#define DECL_ASN_OP_T(op, tp) sc_fxval &operator op(tp);

#define DECL_ASN_OP_OTHER(op) \
    DECL_ASN_OP_T(op, int64) \
    DECL_ASN_OP_T(op, uint64) \
    DECL_ASN_OP_T(op, const sc_int_base &) \
    DECL_ASN_OP_T(op, const sc_uint_base &) \
    DECL_ASN_OP_T(op, const sc_signed &) \
    DECL_ASN_OP_T(op, const sc_unsigned &)

#define DECL_ASN_OP(op) \
    DECL_ASN_OP_T(op, int) \
    DECL_ASN_OP_T(op, unsigned int) \
    DECL_ASN_OP_T(op, long) \
    DECL_ASN_OP_T(op, unsigned long) \
    DECL_ASN_OP_T(op, float) \
    DECL_ASN_OP_T(op, double) \
    DECL_ASN_OP_T(op, const char *) \
    DECL_ASN_OP_T(op, const sc_fxval &) \
    DECL_ASN_OP_T(op, const sc_fxval_fast &) \
    DECL_ASN_OP_T(op, const sc_fxnum &) \
    DECL_ASN_OP_T(op, const sc_fxnum_fast &) \
    DECL_ASN_OP_OTHER(op)

    DECL_ASN_OP(=)

    DECL_ASN_OP(*=)
    DECL_ASN_OP(/=)
    DECL_ASN_OP(+=)
    DECL_ASN_OP(-=)

    DECL_ASN_OP_T(<<=, int)
    DECL_ASN_OP_T(>>=, int)

#undef DECL_ASN_OP_T
#undef DECL_ASN_OP_OTHER
#undef DECL_ASN_OP

    // auto-increment and auto-decrement
    const sc_fxval operator ++ (int);
    const sc_fxval operator -- (int);

    sc_fxval & operator ++ ();
    sc_fxval & operator -- ();

    // implicit conversion
    operator double() const;            // necessary evil!

    // explicit conversion to primitive types
    short to_short() const;
    unsigned short to_ushort() const;
    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;
    float to_float() const;
    double to_double() const;

    // explicit conversion to character string
    const std::string to_string() const;
    const std::string to_string(sc_numrep) const;
    const std::string to_string(sc_numrep, bool) const;
    const std::string to_string(sc_fmt) const;
    const std::string to_string(sc_numrep, sc_fmt) const;
    const std::string to_string(sc_numrep, bool, sc_fmt) const;

    const std::string to_dec() const;
    const std::string to_bin() const;
    const std::string to_oct() const;
    const std::string to_hex() const;

    // query value
    bool is_neg() const;
    bool is_zero() const;
    bool is_nan() const;
    bool is_inf() const;
    bool is_normal() const;

    bool rounding_flag() const;

    // print or dump content
    void print(::std::ostream & =::std::cout) const;
    void scan(::std::istream & =::std::cin);
    void dump(::std::ostream & =::std::cout) const;

    // internal use only;
    bool get_bit(int) const;

  protected:
    sc_fxval_observer *lock_observer() const;
    void unlock_observer(sc_fxval_observer *) const;

    void get_type(int &, int &, sc_enc &) const;

    const sc_fxval quantization(const scfx_params &, bool &) const;
    const sc_fxval overflow(const scfx_params &, bool &) const;

  private:
    scfx_rep * m_rep;

    mutable sc_fxval_observer *m_observer;
};


// ----------------------------------------------------------------------------
//  CLASS : sc_fxval_fast
//
//  Fixed-point value type; limited precision.
// ----------------------------------------------------------------------------

class sc_fxval_fast
{
    friend class sc_fxnum_fast;

  protected:
    sc_fxval_fast_observer *observer() const;

  public:
    explicit sc_fxval_fast(sc_fxval_fast_observer * =0);
    explicit sc_fxval_fast(int, sc_fxval_fast_observer * =0);
    explicit sc_fxval_fast(unsigned int, sc_fxval_fast_observer * =0);
    explicit sc_fxval_fast(long, sc_fxval_fast_observer * =0);
    explicit sc_fxval_fast(unsigned long, sc_fxval_fast_observer * =0);
    explicit sc_fxval_fast(float, sc_fxval_fast_observer * =0);
    explicit sc_fxval_fast(double, sc_fxval_fast_observer * =0);
    explicit sc_fxval_fast(const char *, sc_fxval_fast_observer * =0);
    sc_fxval_fast(const sc_fxval &, sc_fxval_fast_observer * =0);
    sc_fxval_fast(const sc_fxval_fast &, sc_fxval_fast_observer * =0);
    sc_fxval_fast(const sc_fxnum &, sc_fxval_fast_observer * =0);
    sc_fxval_fast(const sc_fxnum_fast &, sc_fxval_fast_observer * =0);

    explicit sc_fxval_fast(int64, sc_fxval_fast_observer * =0);
    explicit sc_fxval_fast(uint64, sc_fxval_fast_observer * =0);
    explicit sc_fxval_fast(const sc_int_base &, sc_fxval_fast_observer * =0);
    explicit sc_fxval_fast(const sc_uint_base &, sc_fxval_fast_observer * =0);
    explicit sc_fxval_fast(const sc_signed &, sc_fxval_fast_observer * =0);
    explicit sc_fxval_fast(const sc_unsigned &, sc_fxval_fast_observer * =0);

    ~sc_fxval_fast();

    // internal use only;
    double get_val() const;
    void set_val(double);

    // unary operators
    const sc_fxval_fast operator - () const;
    const sc_fxval_fast & operator + () const;

    // unary functions
    friend void neg(sc_fxval_fast &, const sc_fxval_fast &);

    // binary operators
#define DECL_BIN_OP_T(op, tp) \
    friend const sc_fxval_fast operator op (const sc_fxval_fast &, tp); \
    friend const sc_fxval_fast operator op (tp, const sc_fxval_fast &);

#define DECL_BIN_OP_OTHER(op) \
    DECL_BIN_OP_T(op, int64) \
    DECL_BIN_OP_T(op, uint64) \
    DECL_BIN_OP_T(op, const sc_int_base &) \
    DECL_BIN_OP_T(op, const sc_uint_base &) \
    DECL_BIN_OP_T(op, const sc_signed &) \
    DECL_BIN_OP_T(op, const sc_unsigned &)

#define DECL_BIN_OP(op, dummy) \
    friend const sc_fxval_fast operator op (const sc_fxval_fast &, \
                                            const sc_fxval_fast &); \
    DECL_BIN_OP_T(op, int) \
    DECL_BIN_OP_T(op, unsigned int) \
    DECL_BIN_OP_T(op, long) \
    DECL_BIN_OP_T(op, unsigned long) \
    DECL_BIN_OP_T(op, float) \
    DECL_BIN_OP_T(op, double) \
    DECL_BIN_OP_T(op, const char *) \
    DECL_BIN_OP_OTHER(op)

    DECL_BIN_OP(*, mult)
    DECL_BIN_OP(+, add)
    DECL_BIN_OP(-, sub)
// don't use macro
//    DECL_BIN_OP(/, div)
    friend const sc_fxval_fast operator / (const sc_fxval_fast &,
                                           const sc_fxval_fast &);
    DECL_BIN_OP_T(/, int)
    DECL_BIN_OP_T(/, unsigned int)
    DECL_BIN_OP_T(/, long)
    DECL_BIN_OP_T(/, unsigned long)
    DECL_BIN_OP_T(/, float)
    DECL_BIN_OP_T(/, double)
    DECL_BIN_OP_T(/, const char *)
//    DECL_BIN_OP_OTHER(/)

    DECL_BIN_OP_T(/, int64) \
    DECL_BIN_OP_T(/, uint64) \
    DECL_BIN_OP_T(/, const sc_int_base &) \
    DECL_BIN_OP_T(/, const sc_uint_base &) \
    DECL_BIN_OP_T(/, const sc_signed &) \
    DECL_BIN_OP_T(/, const sc_unsigned &)

#undef DECL_BIN_OP_T
#undef DECL_BIN_OP_OTHER
#undef DECL_BIN_OP

    friend const sc_fxval_fast operator << (const sc_fxval_fast &, int);
    friend const sc_fxval_fast operator >> (const sc_fxval_fast &, int);

    // binary functions
#define DECL_BIN_FNC_T(fnc, tp) \
    friend void fnc (sc_fxval_fast &, const sc_fxval_fast &, tp); \
    friend void fnc (sc_fxval_fast &, tp, const sc_fxval_fast &);

#define DECL_BIN_FNC_OTHER(fnc) \
    DECL_BIN_FNC_T(fnc, int64) \
    DECL_BIN_FNC_T(fnc, uint64) \
    DECL_BIN_FNC_T(fnc, const sc_int_base &) \
    DECL_BIN_FNC_T(fnc, const sc_uint_base &) \
    DECL_BIN_FNC_T(fnc, const sc_signed &) \
    DECL_BIN_FNC_T(fnc, const sc_unsigned &)

#define DECL_BIN_FNC(fnc) \
    friend void fnc (sc_fxval_fast &, const sc_fxval_fast &, \
                     const sc_fxval_fast &); \
    DECL_BIN_FNC_T(fnc, int) \
    DECL_BIN_FNC_T(fnc, unsigned int) \
    DECL_BIN_FNC_T(fnc, long) \
    DECL_BIN_FNC_T(fnc, unsigned long) \
    DECL_BIN_FNC_T(fnc, float) \
    DECL_BIN_FNC_T(fnc, double) \
    DECL_BIN_FNC_T(fnc, const char *) \
    DECL_BIN_FNC_T(fnc, const sc_fxval &) \
    DECL_BIN_FNC_T(fnc, const sc_fxnum &) \
    DECL_BIN_FNC_OTHER(fnc)

    DECL_BIN_FNC(mult)
    DECL_BIN_FNC(div)
    DECL_BIN_FNC(add)
    DECL_BIN_FNC(sub)

#undef DECL_BIN_FNC_T
#undef DECL_BIN_FNC_OTHER
#undef DECL_BIN_FNC

    friend void lshift(sc_fxval_fast &, const sc_fxval_fast &, int);
    friend void rshift(sc_fxval_fast &, const sc_fxval_fast &, int);

    // relational (including equality) operators
#define DECL_REL_OP_T(op, tp) \
    friend bool operator op (const sc_fxval_fast &, tp); \
    friend bool operator op (tp, const sc_fxval_fast &);

#define DECL_REL_OP_OTHER(op) \
    DECL_REL_OP_T(op, int64) \
    DECL_REL_OP_T(op, uint64) \
    DECL_REL_OP_T(op, const sc_int_base &) \
    DECL_REL_OP_T(op, const sc_uint_base &) \
    DECL_REL_OP_T(op, const sc_signed &) \
    DECL_REL_OP_T(op, const sc_unsigned &)

#define DECL_REL_OP(op) \
    friend bool operator op (const sc_fxval_fast &, const sc_fxval_fast &); \
    DECL_REL_OP_T(op, int) \
    DECL_REL_OP_T(op, unsigned int) \
    DECL_REL_OP_T(op, long) \
    DECL_REL_OP_T(op, unsigned long) \
    DECL_REL_OP_T(op, float) \
    DECL_REL_OP_T(op, double) \
    DECL_REL_OP_T(op, const char *) \
    DECL_REL_OP_OTHER(op)

    DECL_REL_OP(<)
    DECL_REL_OP(<=)
    DECL_REL_OP(>)
    DECL_REL_OP(>=)
    DECL_REL_OP(==)
    DECL_REL_OP(!=)

#undef DECL_REL_OP_T
#undef DECL_REL_OP_OTHER
#undef DECL_REL_OP

    // assignment operators
#define DECL_ASN_OP_T(op, tp) sc_fxval_fast &operator op(tp);

#define DECL_ASN_OP_OTHER(op) \
    DECL_ASN_OP_T(op, int64) \
    DECL_ASN_OP_T(op, uint64) \
    DECL_ASN_OP_T(op, const sc_int_base &) \
    DECL_ASN_OP_T(op, const sc_uint_base &) \
    DECL_ASN_OP_T(op, const sc_signed &) \
    DECL_ASN_OP_T(op, const sc_unsigned &)

#define DECL_ASN_OP(op) \
    DECL_ASN_OP_T(op, int) \
    DECL_ASN_OP_T(op, unsigned int) \
    DECL_ASN_OP_T(op, long) \
    DECL_ASN_OP_T(op, unsigned long) \
    DECL_ASN_OP_T(op, float) \
    DECL_ASN_OP_T(op, double) \
    DECL_ASN_OP_T(op, const char *) \
    DECL_ASN_OP_T(op, const sc_fxval &) \
    DECL_ASN_OP_T(op, const sc_fxval_fast &) \
    DECL_ASN_OP_T(op, const sc_fxnum &) \
    DECL_ASN_OP_T(op, const sc_fxnum_fast &) \
    DECL_ASN_OP_OTHER(op)

    DECL_ASN_OP(=)

    DECL_ASN_OP(*=)
    DECL_ASN_OP(/=)
    DECL_ASN_OP(+=)
    DECL_ASN_OP(-=)

    DECL_ASN_OP_T(<<=, int)
    DECL_ASN_OP_T(>>=, int)

#undef DECL_ASN_OP_T
#undef DECL_ASN_OP_OTHER
#undef DECL_ASN_OP

    // auto-increment and auto-decrement
    const sc_fxval_fast operator ++ (int);
    const sc_fxval_fast operator -- (int);

    sc_fxval_fast & operator ++ ();
    sc_fxval_fast & operator -- ();

    // implicit conversion
    operator double() const;            // necessary evil!

    // explicit conversion to primitive types
    short to_short() const;
    unsigned short to_ushort() const;
    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;
    float to_float() const;
    double to_double() const;

    // explicit conversion to character string
    const std::string to_string() const;
    const std::string to_string(sc_numrep) const;
    const std::string to_string(sc_numrep, bool) const;
    const std::string to_string(sc_fmt) const;
    const std::string to_string(sc_numrep, sc_fmt) const;
    const std::string to_string(sc_numrep, bool, sc_fmt) const;

    const std::string to_dec() const;
    const std::string to_bin() const;
    const std::string to_oct() const;
    const std::string to_hex() const;

    // query value
    bool is_neg() const;
    bool is_zero() const;
    bool is_nan() const;
    bool is_inf() const;
    bool is_normal() const;

    bool rounding_flag() const;

    // print or dump content
    void print(::std::ostream & =::std::cout) const;
    void scan(::std::istream & =::std::cin);
    void dump(::std::ostream & =::std::cout) const;

    // internal use only;
    bool get_bit(int) const;

  protected:
    sc_fxval_fast_observer *lock_observer() const;
    void unlock_observer(sc_fxval_fast_observer *) const;

    static double from_string(const char *);
  private:
    double m_val;

    mutable sc_fxval_fast_observer *m_observer;
};


// IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII

// ----------------------------------------------------------------------------
//  CLASS : sc_fxval
//
//  Fixed-point value type; arbitrary precision.
// ----------------------------------------------------------------------------

// protected method

inline sc_fxval_observer *sc_fxval::observer() const { return m_observer; }

// internal use only;
inline sc_fxval::sc_fxval(scfx_rep *a) :
    m_rep(a != 0 ? a : new scfx_rep), m_observer(0)
{}


// public constructors

inline sc_fxval::sc_fxval(sc_fxval_observer *observer_) :
    m_rep(new scfx_rep), m_observer(observer_)
{
    SC_FXVAL_OBSERVER_DEFAULT_
    SC_FXVAL_OBSERVER_CONSTRUCT_(*this)
}

inline sc_fxval::sc_fxval(const sc_fxval &a, sc_fxval_observer *observer_) :
    m_rep(new scfx_rep(*a.m_rep)), m_observer(observer_)
{
    SC_FXVAL_OBSERVER_DEFAULT_
    SC_FXVAL_OBSERVER_READ_(a)
    SC_FXVAL_OBSERVER_CONSTRUCT_(*this)
    SC_FXVAL_OBSERVER_WRITE_(*this)
}

#define DEFN_CTOR_T(tp, arg) \
inline sc_fxval::sc_fxval(tp a, sc_fxval_observer *observer_) : \
    m_rep(new scfx_rep(arg)), m_observer(observer_) \
{ \
    SC_FXVAL_OBSERVER_DEFAULT_ \
    SC_FXVAL_OBSERVER_CONSTRUCT_(*this) \
    SC_FXVAL_OBSERVER_WRITE_(*this) \
}

#define DEFN_CTOR_T_A(tp) DEFN_CTOR_T(tp, a)
#define DEFN_CTOR_T_B(tp) DEFN_CTOR_T(tp, a.to_double())
#define DEFN_CTOR_T_C(tp) DEFN_CTOR_T(tp, a.value())

DEFN_CTOR_T_A(int)
DEFN_CTOR_T_A(unsigned int)
DEFN_CTOR_T_A(long)
DEFN_CTOR_T_A(unsigned long)
DEFN_CTOR_T_A(float)
DEFN_CTOR_T_A(double)
DEFN_CTOR_T_A(const char *)
DEFN_CTOR_T_B(const sc_fxval_fast &)

DEFN_CTOR_T_A(int64)
DEFN_CTOR_T_A(uint64)
DEFN_CTOR_T_C(const sc_int_base &)
DEFN_CTOR_T_C(const sc_uint_base &)
DEFN_CTOR_T_A(const sc_signed &)
DEFN_CTOR_T_A(const sc_unsigned &)

#undef DEFN_CTOR_T
#undef DEFN_CTOR_T_A
#undef DEFN_CTOR_T_B
#undef DEFN_CTOR_T_C

inline sc_fxval::~sc_fxval()
{
    SC_FXVAL_OBSERVER_DESTRUCT_(*this)
    delete m_rep;
}

// internal use only;
inline const scfx_rep *
sc_fxval::get_rep() const
{
    SC_FXVAL_OBSERVER_READ_(*this)
    return m_rep;
}

// internal use only;
inline void
sc_fxval::set_rep(scfx_rep *rep_)
{
    delete m_rep;
    m_rep = rep_;
    SC_FXVAL_OBSERVER_WRITE_(*this)
}

// unary operators
inline const sc_fxval
sc_fxval::operator - () const
{
    SC_FXVAL_OBSERVER_READ_(*this)
    return sc_fxval(sc_dt::neg_scfx_rep(*m_rep));
}

inline const sc_fxval &
sc_fxval::operator + () const
{
    // SC_FXVAL_OBSERVER_READ_(*this)
    return *this;
}

// unary functions
inline void
neg(sc_fxval &c, const sc_fxval &a)
{
    SC_FXVAL_OBSERVER_READ_(a)
    delete c.m_rep;
    c.m_rep = sc_dt::neg_scfx_rep(*a.m_rep);
    SC_FXVAL_OBSERVER_WRITE_(c)
}

// binary operators
#define DEFN_BIN_OP_T(op, fnc, tp) \
inline const sc_fxval \
operator op (const sc_fxval &a, tp b) \
{ \
    SC_FXVAL_OBSERVER_READ_(a) \
    sc_fxval tmp(b); \
    return sc_fxval(sc_dt::fnc ## _scfx_rep(*a.m_rep, *tmp.m_rep)); \
} \
 \
inline \
const sc_fxval \
operator op (tp a, const sc_fxval &b) \
{ \
    SC_FXVAL_OBSERVER_READ_(b) \
    sc_fxval tmp(a); \
    return sc_fxval(sc_dt::fnc ## _scfx_rep(*tmp.m_rep, *b.m_rep)); \
}

#define DEFN_BIN_OP_OTHER(op, fnc) \
DEFN_BIN_OP_T(op, fnc, int64) \
DEFN_BIN_OP_T(op, fnc, uint64) \
DEFN_BIN_OP_T(op, fnc, const sc_int_base &) \
DEFN_BIN_OP_T(op, fnc, const sc_uint_base &) \
DEFN_BIN_OP_T(op, fnc, const sc_signed &) \
DEFN_BIN_OP_T(op, fnc, const sc_unsigned &)

#define DEFN_BIN_OP(op, fnc) \
inline const sc_fxval \
operator op (const sc_fxval &a, const sc_fxval &b) \
{ \
    SC_FXVAL_OBSERVER_READ_(a) \
    SC_FXVAL_OBSERVER_READ_(b) \
    return sc_fxval(sc_dt::fnc ## _scfx_rep( *a.m_rep, *b.m_rep)); \
} \
 \
DEFN_BIN_OP_T(op, fnc, int) \
DEFN_BIN_OP_T(op, fnc, unsigned int) \
DEFN_BIN_OP_T(op, fnc, long) \
DEFN_BIN_OP_T(op, fnc, unsigned long) \
DEFN_BIN_OP_T(op, fnc, float) \
DEFN_BIN_OP_T(op, fnc, double) \
DEFN_BIN_OP_T(op, fnc, const char *) \
DEFN_BIN_OP_T(op, fnc, const sc_fxval_fast &) \
DEFN_BIN_OP_OTHER(op, fnc)

DEFN_BIN_OP(*, mult)
DEFN_BIN_OP(+, add)
DEFN_BIN_OP(-, sub)
// don't use macro
//DEFN_BIN_OP(/, div)
inline const sc_fxval
operator / (const sc_fxval &a, const sc_fxval &b)
{
    SC_FXVAL_OBSERVER_READ_(a)
    SC_FXVAL_OBSERVER_READ_(b)
    return sc_fxval(sc_dt::div_scfx_rep(*a.m_rep, *b.m_rep));
}

DEFN_BIN_OP_T(/, div, int)
DEFN_BIN_OP_T(/, div, unsigned int)
DEFN_BIN_OP_T(/, div, long)
DEFN_BIN_OP_T(/, div, unsigned long)
DEFN_BIN_OP_T(/, div, float)
DEFN_BIN_OP_T(/, div, double)
DEFN_BIN_OP_T(/, div, const char *)
DEFN_BIN_OP_T(/, div, const sc_fxval_fast &)
//DEFN_BIN_OP_OTHER(/, div)

DEFN_BIN_OP_T(/, div, int64)
DEFN_BIN_OP_T(/, div, uint64)
DEFN_BIN_OP_T(/, div, const sc_int_base &)
DEFN_BIN_OP_T(/, div, const sc_uint_base &)
DEFN_BIN_OP_T(/, div, const sc_signed &)
DEFN_BIN_OP_T(/, div, const sc_unsigned &)

#undef DEFN_BIN_OP_T
#undef DEFN_BIN_OP_OTHER
#undef DEFN_BIN_OP

inline const sc_fxval
operator << (const sc_fxval &a, int b)
{
    SC_FXVAL_OBSERVER_READ_(a)
    return sc_fxval(sc_dt::lsh_scfx_rep(*a.m_rep, b));
}

inline const sc_fxval
operator >> (const sc_fxval &a, int b)
{
    SC_FXVAL_OBSERVER_READ_(a)
    return sc_fxval(sc_dt::rsh_scfx_rep(*a.m_rep, b));
}

// binary functions
#define DEFN_BIN_FNC_T(fnc, tp) \
inline void \
fnc (sc_fxval &c, const sc_fxval &a, tp b) \
{ \
    SC_FXVAL_OBSERVER_READ_(a) \
    sc_fxval tmp(b); \
    delete c.m_rep; \
    c.m_rep = sc_dt::fnc ## _scfx_rep(*a.m_rep, *tmp.m_rep); \
    SC_FXVAL_OBSERVER_WRITE_(c) \
} \
 \
inline void \
fnc (sc_fxval &c, tp a, const sc_fxval &b) \
{ \
    SC_FXVAL_OBSERVER_READ_(b) \
    sc_fxval tmp(a); \
    delete c.m_rep; \
    c.m_rep = sc_dt::fnc ## _scfx_rep(*tmp.m_rep, *b.m_rep); \
    SC_FXVAL_OBSERVER_WRITE_(c) \
}

#define DEFN_BIN_FNC_OTHER(fnc) \
DEFN_BIN_FNC_T(fnc, int64) \
DEFN_BIN_FNC_T(fnc, uint64) \
DEFN_BIN_FNC_T(fnc, const sc_int_base &) \
DEFN_BIN_FNC_T(fnc, const sc_uint_base &) \
DEFN_BIN_FNC_T(fnc, const sc_signed &) \
DEFN_BIN_FNC_T(fnc, const sc_unsigned &)

#define DEFN_BIN_FNC(fnc) \
inline void \
fnc(sc_fxval &c, const sc_fxval &a, const sc_fxval &b) \
{ \
    SC_FXVAL_OBSERVER_READ_(a) \
    SC_FXVAL_OBSERVER_READ_(b) \
    delete c.m_rep; \
    c.m_rep = sc_dt::fnc ## _scfx_rep(*a.m_rep, *b.m_rep); \
    SC_FXVAL_OBSERVER_WRITE_(c) \
} \
 \
DEFN_BIN_FNC_T(fnc, int) \
DEFN_BIN_FNC_T(fnc, unsigned int) \
DEFN_BIN_FNC_T(fnc, long) \
DEFN_BIN_FNC_T(fnc, unsigned long) \
DEFN_BIN_FNC_T(fnc, float) \
DEFN_BIN_FNC_T(fnc, double) \
DEFN_BIN_FNC_T(fnc, const char *) \
DEFN_BIN_FNC_T(fnc, const sc_fxval_fast &) \
DEFN_BIN_FNC_OTHER(fnc)

DEFN_BIN_FNC(mult)
DEFN_BIN_FNC(div)
DEFN_BIN_FNC(add)
DEFN_BIN_FNC(sub)

#undef DEFN_BIN_FNC_T
#undef DEFN_BIN_FNC_OTHER
#undef DEFN_BIN_FNC

inline void
lshift(sc_fxval &c, const sc_fxval &a, int b)
{
    SC_FXVAL_OBSERVER_READ_(a)
    delete c.m_rep;
    c.m_rep = sc_dt::lsh_scfx_rep(*a.m_rep, b);
    SC_FXVAL_OBSERVER_WRITE_(c)
}

inline void
rshift(sc_fxval &c, const sc_fxval &a, int b)
{
    SC_FXVAL_OBSERVER_READ_(a)
    delete c.m_rep;
    c.m_rep = sc_dt::rsh_scfx_rep(*a.m_rep, b);
    SC_FXVAL_OBSERVER_WRITE_(c)
}

// relational (including equality) operators
#define DEFN_REL_OP_T(op, ret, tp) \
inline bool \
operator op (const sc_fxval &a, tp b) \
{ \
    SC_FXVAL_OBSERVER_READ_(a) \
    sc_fxval tmp(b); \
    int result = sc_dt::cmp_scfx_rep(*a.m_rep, *tmp.m_rep); \
    return (ret); \
} \
 \
inline bool \
operator op (tp a, const sc_fxval &b) \
{ \
    SC_FXVAL_OBSERVER_READ_(b) \
    sc_fxval tmp(a); \
    int result = sc_dt::cmp_scfx_rep(*tmp.m_rep, *b.m_rep); \
    return (ret); \
}

#define DEFN_REL_OP_OTHER(op, ret) \
DEFN_REL_OP_T(op, ret, int64) \
DEFN_REL_OP_T(op, ret, uint64) \
DEFN_REL_OP_T(op, ret, const sc_int_base &) \
DEFN_REL_OP_T(op, ret, const sc_uint_base &) \
DEFN_REL_OP_T(op, ret, const sc_signed &) \
DEFN_REL_OP_T(op, ret, const sc_unsigned &)

#define DEFN_REL_OP(op, ret) \
inline bool \
operator op (const sc_fxval &a, const sc_fxval &b) \
{ \
    SC_FXVAL_OBSERVER_READ_(a) \
    SC_FXVAL_OBSERVER_READ_(b) \
    int result = sc_dt::cmp_scfx_rep(*a.m_rep, *b.m_rep); \
    return (ret); \
} \
 \
DEFN_REL_OP_T(op, ret, int) \
DEFN_REL_OP_T(op, ret, unsigned int) \
DEFN_REL_OP_T(op, ret, long) \
DEFN_REL_OP_T(op, ret, unsigned long) \
DEFN_REL_OP_T(op, ret, float) \
DEFN_REL_OP_T(op, ret, double) \
DEFN_REL_OP_T(op, ret, const char *) \
DEFN_REL_OP_T(op, ret, const sc_fxval_fast &) \
DEFN_REL_OP_OTHER(op, ret)

DEFN_REL_OP(<, result < 0)
DEFN_REL_OP(<=, result <= 0)
DEFN_REL_OP(>, result > 0 && result != 2)
DEFN_REL_OP(>=, result >= 0 && result != 2)
DEFN_REL_OP(==, result == 0)
DEFN_REL_OP(!=, result != 0)

#undef DEFN_REL_OP_T
#undef DEFN_REL_OP_OTHER
#undef DEFN_REL_OP

// assignment operators
inline sc_fxval &
sc_fxval::operator = (const sc_fxval &a)
{
    if (&a != this) {
        SC_FXVAL_OBSERVER_READ_(a)
        *m_rep = *a.m_rep;
        SC_FXVAL_OBSERVER_WRITE_(*this)
    }
    return *this;
}

#define DEFN_ASN_OP_T(tp) \
inline sc_fxval & \
sc_fxval::operator = (tp b) \
{ \
    sc_fxval tmp(b); \
    *m_rep = *tmp.m_rep; \
    SC_FXVAL_OBSERVER_WRITE_(*this) \
    return *this; \
}

DEFN_ASN_OP_T(int)
DEFN_ASN_OP_T(unsigned int)
DEFN_ASN_OP_T(long)
DEFN_ASN_OP_T(unsigned long)
DEFN_ASN_OP_T(float)
DEFN_ASN_OP_T(double)
DEFN_ASN_OP_T(const char *)
DEFN_ASN_OP_T(const sc_fxval_fast &)

DEFN_ASN_OP_T(int64)
DEFN_ASN_OP_T(uint64)
DEFN_ASN_OP_T(const sc_int_base &)
DEFN_ASN_OP_T(const sc_uint_base &)
DEFN_ASN_OP_T(const sc_signed &)
DEFN_ASN_OP_T(const sc_unsigned &)

#undef DEFN_ASN_OP_T

#define DEFN_ASN_OP_T(op, fnc, tp) \
inline sc_fxval & \
sc_fxval::operator op (tp b) \
{ \
    SC_FXVAL_OBSERVER_READ_(*this) \
    sc_fxval tmp(b); \
    scfx_rep *new_rep = sc_dt::fnc ## _scfx_rep(*m_rep, *tmp.m_rep); \
    delete m_rep; \
    m_rep = new_rep; \
    SC_FXVAL_OBSERVER_WRITE_(*this) \
    return *this; \
}

#define DEFN_ASN_OP_OTHER(op, fnc) \
DEFN_ASN_OP_T(op, fnc, int64) \
DEFN_ASN_OP_T(op, fnc, uint64) \
DEFN_ASN_OP_T(op, fnc, const sc_int_base &) \
DEFN_ASN_OP_T(op, fnc, const sc_uint_base &) \
DEFN_ASN_OP_T(op, fnc, const sc_signed &) \
DEFN_ASN_OP_T(op, fnc, const sc_unsigned &)

#define DEFN_ASN_OP(op, fnc) \
inline sc_fxval & \
sc_fxval::operator op (const sc_fxval &b) \
{ \
    SC_FXVAL_OBSERVER_READ_(*this) \
    SC_FXVAL_OBSERVER_READ_(b) \
    scfx_rep *new_rep = sc_dt::fnc ## _scfx_rep(*m_rep, *b.m_rep); \
    delete m_rep; \
    m_rep = new_rep; \
    SC_FXVAL_OBSERVER_WRITE_(*this) \
    return *this; \
} \
 \
DEFN_ASN_OP_T(op, fnc, int) \
DEFN_ASN_OP_T(op, fnc, unsigned int) \
DEFN_ASN_OP_T(op, fnc, long) \
DEFN_ASN_OP_T(op, fnc, unsigned long) \
DEFN_ASN_OP_T(op, fnc, float) \
DEFN_ASN_OP_T(op, fnc, double) \
DEFN_ASN_OP_T(op, fnc, const char *) \
DEFN_ASN_OP_T(op, fnc, const sc_fxval_fast &) \
DEFN_ASN_OP_OTHER(op, fnc)

DEFN_ASN_OP(*=, mult)
DEFN_ASN_OP(/=, div)
DEFN_ASN_OP(+=, add)
DEFN_ASN_OP(-=, sub)

#undef DEFN_ASN_OP_T
#undef DEFN_ASN_OP_OTHER
#undef DEFN_ASN_OP

inline sc_fxval &
sc_fxval::operator <<= (int b)
{
    SC_FXVAL_OBSERVER_READ_(*this)
    m_rep->lshift(b);
    SC_FXVAL_OBSERVER_WRITE_(*this)
    return *this;
}

inline sc_fxval &
sc_fxval::operator >>= (int b)
{
    SC_FXVAL_OBSERVER_READ_(*this)
    m_rep->rshift(b);
    SC_FXVAL_OBSERVER_WRITE_(*this)
    return *this;
}

// auto-increment and auto-decrement
inline const sc_fxval
sc_fxval::operator ++ (int)
{
    sc_fxval c = *this;
    (*this) += 1;
    return c;
}

inline const sc_fxval
sc_fxval::operator -- (int)
{
    sc_fxval c = *this;
    (*this) -= 1;
    return c;
}

inline sc_fxval &
sc_fxval::operator ++ ()
{
    (*this) += 1;
    return *this;
}

inline sc_fxval &
sc_fxval::operator -- ()
{
    (*this) -= 1;
    return *this;
}

// implicit conversion
inline sc_fxval::operator double() const
{
    SC_FXVAL_OBSERVER_READ_(*this)
    return m_rep->to_double();
}

// explicit conversion to primitive types
inline short
sc_fxval::to_short() const
{
    SC_FXVAL_OBSERVER_READ_(*this)
    return static_cast<short>(m_rep->to_uint64());
}

inline unsigned short
sc_fxval::to_ushort() const
{
    SC_FXVAL_OBSERVER_READ_(*this)
    return static_cast<unsigned short>(m_rep->to_uint64());
}

inline int
sc_fxval::to_int() const
{
    SC_FXVAL_OBSERVER_READ_(*this)
    return static_cast<int>(m_rep->to_uint64());
}

inline int64
sc_fxval::to_int64() const
{
    SC_FXVAL_OBSERVER_READ_(*this)
    return static_cast<int64>(m_rep->to_uint64());
}

inline unsigned int
sc_fxval::to_uint() const
{
    SC_FXVAL_OBSERVER_READ_(*this)
    return static_cast<unsigned int>(m_rep->to_uint64());
}

inline uint64
sc_fxval::to_uint64() const
{
    SC_FXVAL_OBSERVER_READ_(*this)
    return m_rep->to_uint64();
}

inline long
sc_fxval::to_long() const
{
    SC_FXVAL_OBSERVER_READ_(*this)
    return static_cast<long>(m_rep->to_uint64());
}

inline unsigned long
sc_fxval::to_ulong() const
{
    SC_FXVAL_OBSERVER_READ_(*this)
    return static_cast<unsigned long>(m_rep->to_uint64());
}

inline float
sc_fxval::to_float() const
{
    SC_FXVAL_OBSERVER_READ_(*this)
    return static_cast<float>(m_rep->to_double());
}

inline double
sc_fxval::to_double() const
{
    SC_FXVAL_OBSERVER_READ_(*this)
    return m_rep->to_double();
}

// query value
inline bool
sc_fxval::is_neg() const
{
    SC_FXVAL_OBSERVER_READ_(*this)
    return m_rep->is_neg();
}

inline bool
sc_fxval::is_zero() const
{
    SC_FXVAL_OBSERVER_READ_(*this)
    return m_rep->is_zero();
}

inline bool
sc_fxval::is_nan() const
{
    SC_FXVAL_OBSERVER_READ_(*this)
    return m_rep->is_nan();
}

inline bool
sc_fxval::is_inf() const
{
    SC_FXVAL_OBSERVER_READ_(*this)
    return m_rep->is_inf();
}

inline bool
sc_fxval::is_normal() const
{
    SC_FXVAL_OBSERVER_READ_(*this)
    return m_rep->is_normal();
}

inline bool
sc_fxval::rounding_flag() const
{
    return m_rep->rounding_flag();
}

// internal use only;
inline bool
sc_fxval::get_bit(int i) const
{
    return m_rep->get_bit(i);
}

// protected methods and friend functions
inline void
sc_fxval::get_type(int &wl, int &iwl, sc_enc &enc) const
{
    m_rep->get_type(wl, iwl, enc);
}

inline const sc_fxval
sc_fxval::quantization(const scfx_params &params, bool &q_flag) const
{
    return sc_fxval(sc_dt::quantization_scfx_rep(*m_rep, params, q_flag));
}

inline const sc_fxval
sc_fxval::overflow(const scfx_params &params, bool &o_flag) const
{
    return sc_fxval(sc_dt::overflow_scfx_rep(*m_rep, params, o_flag));
}

inline ::std::ostream &
operator << (::std::ostream &os, const sc_fxval &a)
{
    a.print(os);
    return os;
}

inline ::std::istream &
operator >> (::std::istream &is, sc_fxval &a)
{
    a.scan(is);
    return is;
}


// ----------------------------------------------------------------------------
//  CLASS : sc_fxval_fast
//
//  Fixed-point value type; limited precision.
// ----------------------------------------------------------------------------

// protected method
inline sc_fxval_fast_observer *
sc_fxval_fast::observer() const
{
    return m_observer;
}


// public constructors
inline sc_fxval_fast::sc_fxval_fast(sc_fxval_fast_observer *observer_) :
    m_val(0.0), m_observer(observer_)
{
    SC_FXVAL_FAST_OBSERVER_DEFAULT_
    SC_FXVAL_FAST_OBSERVER_CONSTRUCT_(*this)
}

inline sc_fxval_fast::sc_fxval_fast(const sc_fxval_fast &a,
                                    sc_fxval_fast_observer *observer_) :
    m_val(a.m_val), m_observer(observer_)
{
    SC_FXVAL_FAST_OBSERVER_DEFAULT_
    SC_FXVAL_FAST_OBSERVER_READ_(a)
    SC_FXVAL_FAST_OBSERVER_CONSTRUCT_(*this)
    SC_FXVAL_FAST_OBSERVER_WRITE_(*this)
}

#define DEFN_CTOR_T(tp, arg) \
inline sc_fxval_fast::sc_fxval_fast( \
        tp a, sc_fxval_fast_observer * observer_) : \
    m_val(arg), m_observer(observer_) \
{ \
    SC_FXVAL_FAST_OBSERVER_DEFAULT_ \
    SC_FXVAL_FAST_OBSERVER_CONSTRUCT_(*this) \
    SC_FXVAL_FAST_OBSERVER_WRITE_(*this) \
}

#define DEFN_CTOR_T_A(tp) DEFN_CTOR_T(tp, static_cast<double>(a))
#define DEFN_CTOR_T_B(tp) DEFN_CTOR_T(tp, from_string(a))
#define DEFN_CTOR_T_C(tp) DEFN_CTOR_T(tp, a.to_double())

DEFN_CTOR_T_A(int)
DEFN_CTOR_T_A(unsigned int)
DEFN_CTOR_T_A(long)
DEFN_CTOR_T_A(unsigned long)
DEFN_CTOR_T_A(float)
DEFN_CTOR_T_A(double)
DEFN_CTOR_T_B(const char *)
DEFN_CTOR_T_C(const sc_fxval &)

DEFN_CTOR_T_A(int64)
DEFN_CTOR_T_A(uint64)
DEFN_CTOR_T_C(const sc_int_base &)
DEFN_CTOR_T_C(const sc_uint_base &)
DEFN_CTOR_T_C(const sc_signed &)
DEFN_CTOR_T_C(const sc_unsigned &)

#undef DEFN_CTOR_T
#undef DEFN_CTOR_T_A
#undef DEFN_CTOR_T_B
#undef DEFN_CTOR_T_C
#undef DEFN_CTOR_T_D
#undef DEFN_CTOR_T_E

inline sc_fxval_fast::~sc_fxval_fast()
{
    SC_FXVAL_FAST_OBSERVER_DESTRUCT_(*this)
}

// internal use only;
inline double
sc_fxval_fast::get_val() const
{
    SC_FXVAL_FAST_OBSERVER_READ_(*this)
    return m_val;
}

// internal use only;
inline void
sc_fxval_fast::set_val(double val_)
{
    m_val = val_;
    SC_FXVAL_FAST_OBSERVER_WRITE_(*this)
}

// unary operators
inline const sc_fxval_fast
sc_fxval_fast::operator - () const
{
    SC_FXVAL_FAST_OBSERVER_READ_(*this)
    return sc_fxval_fast(-m_val);
}

inline const sc_fxval_fast &
sc_fxval_fast::operator + () const
{
    // SC_FXVAL_FAST_OBSERVER_READ_(*this)
    return *this;
}

// unary functions
inline void
neg(sc_fxval_fast &c, const sc_fxval_fast &a)
{
    SC_FXVAL_FAST_OBSERVER_READ_(a)
    c.m_val = - a.m_val;
    SC_FXVAL_FAST_OBSERVER_WRITE_(c)
}

// binary operators
#define DEFN_BIN_OP_T(op, tp) \
inline const sc_fxval_fast \
operator op (const sc_fxval_fast &a, tp b) \
{ \
    SC_FXVAL_FAST_OBSERVER_READ_(a) \
    sc_fxval_fast tmp(b); \
    return sc_fxval_fast(a.m_val op tmp.m_val); \
} \
 \
inline const sc_fxval_fast \
operator op (tp a, const sc_fxval_fast &b) \
{ \
    SC_FXVAL_FAST_OBSERVER_READ_(b) \
    sc_fxval_fast tmp(a); \
    return sc_fxval_fast(tmp.m_val op b.m_val); \
}

#define DEFN_BIN_OP_OTHER(op) \
DEFN_BIN_OP_T(op, int64) \
DEFN_BIN_OP_T(op, uint64) \
DEFN_BIN_OP_T(op, const sc_int_base &) \
DEFN_BIN_OP_T(op, const sc_uint_base &) \
DEFN_BIN_OP_T(op, const sc_signed &) \
DEFN_BIN_OP_T(op, const sc_unsigned &)

#define DEFN_BIN_OP(op, dummy) \
inline const sc_fxval_fast \
operator op (const sc_fxval_fast &a, const sc_fxval_fast &b) \
{ \
    SC_FXVAL_FAST_OBSERVER_READ_(a) \
    SC_FXVAL_FAST_OBSERVER_READ_(b) \
    return sc_fxval_fast(a.m_val op b.m_val); \
} \
 \
DEFN_BIN_OP_T(op, int) \
DEFN_BIN_OP_T(op, unsigned int) \
DEFN_BIN_OP_T(op, long) \
DEFN_BIN_OP_T(op, unsigned long) \
DEFN_BIN_OP_T(op, float) \
DEFN_BIN_OP_T(op, double) \
DEFN_BIN_OP_T(op, const char *) \
DEFN_BIN_OP_OTHER(op)

DEFN_BIN_OP(*, mult)
DEFN_BIN_OP(+, add)
DEFN_BIN_OP(-, sub)
//DEFN_BIN_OP(/, div)
inline const sc_fxval_fast
operator / (const sc_fxval_fast &a, const sc_fxval_fast &b)
{
    SC_FXVAL_FAST_OBSERVER_READ_(a)
    SC_FXVAL_FAST_OBSERVER_READ_(b)
    return sc_fxval_fast(a.m_val / b.m_val);
}

DEFN_BIN_OP_T(/, int)
DEFN_BIN_OP_T(/, unsigned int)
DEFN_BIN_OP_T(/, long)
DEFN_BIN_OP_T(/, unsigned long)
DEFN_BIN_OP_T(/, float)
DEFN_BIN_OP_T(/, double)
DEFN_BIN_OP_T(/, const char *)
//DEFN_BIN_OP_OTHER(/)

DEFN_BIN_OP_T(/, int64)
DEFN_BIN_OP_T(/, uint64)
DEFN_BIN_OP_T(/, const sc_int_base &)
DEFN_BIN_OP_T(/, const sc_uint_base &)
DEFN_BIN_OP_T(/, const sc_signed &)
DEFN_BIN_OP_T(/, const sc_unsigned &)


#undef DEFN_BIN_OP_T
#undef DEFN_BIN_OP_OTHER
#undef DEFN_BIN_OP


inline const sc_fxval_fast
operator << (const sc_fxval_fast &a, int b)
{
    SC_FXVAL_FAST_OBSERVER_READ_(a)
    return sc_fxval_fast(a.m_val * scfx_pow2(b));
}

inline const sc_fxval_fast
operator >> (const sc_fxval_fast &a, int b)
{
    SC_FXVAL_FAST_OBSERVER_READ_(a)
    return sc_fxval_fast(a.m_val * scfx_pow2(-b));
}

// binary functions
#define DEFN_BIN_FNC_T(fnc, op, tp) \
inline void \
fnc (sc_fxval_fast &c, const sc_fxval_fast &a, tp b) \
{ \
    SC_FXVAL_FAST_OBSERVER_READ_(a) \
    sc_fxval_fast tmp(b); \
    c.m_val = a.m_val op tmp.m_val; \
    SC_FXVAL_FAST_OBSERVER_WRITE_(c) \
} \
 \
inline void \
fnc (sc_fxval_fast &c, tp a, const sc_fxval_fast &b) \
{ \
    SC_FXVAL_FAST_OBSERVER_READ_(b) \
    sc_fxval_fast tmp(a); \
    c.m_val = tmp.m_val op b.m_val; \
    SC_FXVAL_FAST_OBSERVER_WRITE_(c) \
}

#define DEFN_BIN_FNC_OTHER(fnc, op) \
DEFN_BIN_FNC_T(fnc, op, int64) \
DEFN_BIN_FNC_T(fnc, op, uint64) \
DEFN_BIN_FNC_T(fnc, op, const sc_int_base &) \
DEFN_BIN_FNC_T(fnc, op, const sc_uint_base &) \
DEFN_BIN_FNC_T(fnc, op, const sc_signed &) \
DEFN_BIN_FNC_T(fnc, op, const sc_unsigned &)

#define DEFN_BIN_FNC(fnc, op) \
inline void \
fnc (sc_fxval_fast &c, const sc_fxval_fast &a, const sc_fxval_fast &b) \
{ \
    SC_FXVAL_FAST_OBSERVER_READ_(a) \
    SC_FXVAL_FAST_OBSERVER_READ_(b) \
    c.m_val = a.m_val op b.m_val; \
    SC_FXVAL_FAST_OBSERVER_WRITE_(c) \
} \
 \
DEFN_BIN_FNC_T(fnc, op, int) \
DEFN_BIN_FNC_T(fnc, op, unsigned int) \
DEFN_BIN_FNC_T(fnc, op, long) \
DEFN_BIN_FNC_T(fnc, op, unsigned long) \
DEFN_BIN_FNC_T(fnc, op, float) \
DEFN_BIN_FNC_T(fnc, op, double) \
DEFN_BIN_FNC_T(fnc, op, const char *) \
DEFN_BIN_FNC_OTHER(fnc, op)

DEFN_BIN_FNC(mult, *)
DEFN_BIN_FNC(div, /)
DEFN_BIN_FNC(add, +)
DEFN_BIN_FNC(sub, -)

#undef DEFN_BIN_FNC_T
#undef DEFN_BIN_FNC_OTHER
#undef DEFN_BIN_FNC

inline void
lshift(sc_fxval_fast &c, const sc_fxval_fast &a, int b)
{
    SC_FXVAL_FAST_OBSERVER_READ_(a)
    c.m_val = a.m_val * scfx_pow2(b);
    SC_FXVAL_FAST_OBSERVER_WRITE_(c)
}

inline void
rshift(sc_fxval_fast &c, const sc_fxval_fast &a, int b)
{
    SC_FXVAL_FAST_OBSERVER_READ_(a)
    c.m_val = a.m_val * scfx_pow2(-b);
    SC_FXVAL_FAST_OBSERVER_WRITE_(c)
}

// relational (including equality) operators
#define DEFN_REL_OP_T(op, tp) \
inline bool \
operator op (const sc_fxval_fast &a, tp b) \
{ \
    SC_FXVAL_FAST_OBSERVER_READ_(a) \
    sc_fxval_fast tmp(b); \
    return (a.m_val op tmp.m_val); \
} \
 \
inline bool \
operator op (tp a, const sc_fxval_fast &b) \
{ \
    SC_FXVAL_FAST_OBSERVER_READ_(b) \
    sc_fxval_fast tmp(a); \
    return (tmp.m_val op b.m_val); \
}

#define DEFN_REL_OP_OTHER(op) \
DEFN_REL_OP_T(op, int64) \
DEFN_REL_OP_T(op, uint64) \
DEFN_REL_OP_T(op, const sc_int_base &) \
DEFN_REL_OP_T(op, const sc_uint_base &) \
DEFN_REL_OP_T(op, const sc_signed &) \
DEFN_REL_OP_T(op, const sc_unsigned &)

#define DEFN_REL_OP(op) \
inline bool \
operator op (const sc_fxval_fast &a, const sc_fxval_fast &b) \
{ \
    SC_FXVAL_FAST_OBSERVER_READ_(a) \
    SC_FXVAL_FAST_OBSERVER_READ_(b) \
    return (a.m_val op b.m_val); \
} \
 \
DEFN_REL_OP_T(op, int) \
DEFN_REL_OP_T(op, unsigned int) \
DEFN_REL_OP_T(op, long) \
DEFN_REL_OP_T(op, unsigned long) \
DEFN_REL_OP_T(op, float) \
DEFN_REL_OP_T(op, double) \
DEFN_REL_OP_T(op, const char *) \
DEFN_REL_OP_OTHER(op)

DEFN_REL_OP(<)
DEFN_REL_OP(<=)
DEFN_REL_OP(>)
DEFN_REL_OP(>=)
DEFN_REL_OP(==)
DEFN_REL_OP(!=)

#undef DEFN_REL_OP_T
#undef DEFN_REL_OP_OTHER
#undef DEFN_REL_OP

// assignment operators
inline sc_fxval_fast &
sc_fxval_fast::operator = (const sc_fxval_fast &a)
{
    if (&a != this) {
        SC_FXVAL_FAST_OBSERVER_READ_(a)
        m_val = a.m_val;
        SC_FXVAL_FAST_OBSERVER_WRITE_(*this)
    }
    return *this;
}

#define DEFN_ASN_OP_T(tp) \
inline sc_fxval_fast & \
sc_fxval_fast::operator = (tp a) \
{ \
    sc_fxval_fast tmp(a); \
    m_val = tmp.m_val; \
    SC_FXVAL_FAST_OBSERVER_WRITE_(*this) \
    return *this; \
}

DEFN_ASN_OP_T(int)
DEFN_ASN_OP_T(unsigned int)
DEFN_ASN_OP_T(long)
DEFN_ASN_OP_T(unsigned long)
DEFN_ASN_OP_T(float)
DEFN_ASN_OP_T(double)
DEFN_ASN_OP_T(const char *)
DEFN_ASN_OP_T(const sc_fxval &)

DEFN_ASN_OP_T(int64)
DEFN_ASN_OP_T(uint64)
DEFN_ASN_OP_T(const sc_int_base &)
DEFN_ASN_OP_T(const sc_uint_base &)
DEFN_ASN_OP_T(const sc_signed &)
DEFN_ASN_OP_T(const sc_unsigned &)

#undef DEFN_ASN_OP_T

#define DEFN_ASN_OP_T(op, tp) \
inline sc_fxval_fast & \
sc_fxval_fast::operator op (tp b) \
{ \
    SC_FXVAL_FAST_OBSERVER_READ_(*this) \
    sc_fxval_fast tmp(b); \
    m_val op tmp.m_val; \
    SC_FXVAL_FAST_OBSERVER_WRITE_(*this) \
    return *this; \
}

#define DEFN_ASN_OP_OTHER(op) \
DEFN_ASN_OP_T(op, int64) \
DEFN_ASN_OP_T(op, uint64) \
DEFN_ASN_OP_T(op, const sc_int_base &) \
DEFN_ASN_OP_T(op, const sc_uint_base &) \
DEFN_ASN_OP_T(op, const sc_signed &) \
DEFN_ASN_OP_T(op, const sc_unsigned &)

#define DEFN_ASN_OP(op) \
inline sc_fxval_fast & \
sc_fxval_fast::operator op (const sc_fxval_fast &b) \
{ \
    SC_FXVAL_FAST_OBSERVER_READ_(*this) \
    SC_FXVAL_FAST_OBSERVER_READ_(b) \
    m_val op b.m_val; \
    SC_FXVAL_FAST_OBSERVER_WRITE_(*this) \
    return *this; \
} \
 \
DEFN_ASN_OP_T(op, int) \
DEFN_ASN_OP_T(op, unsigned int) \
DEFN_ASN_OP_T(op, long) \
DEFN_ASN_OP_T(op, unsigned long) \
DEFN_ASN_OP_T(op, float) \
DEFN_ASN_OP_T(op, double) \
DEFN_ASN_OP_T(op, const char *) \
DEFN_ASN_OP_T(op, const sc_fxval &) \
DEFN_ASN_OP_OTHER(op)

DEFN_ASN_OP(*=)
DEFN_ASN_OP(/=)
DEFN_ASN_OP(+=)
DEFN_ASN_OP(-=)

#undef DEFN_ASN_OP_T
#undef DEFN_ASN_OP_OTHER
#undef DEFN_ASN_OP

inline sc_fxval_fast &
sc_fxval_fast::operator <<= (int b)
{
    SC_FXVAL_FAST_OBSERVER_READ_(*this)
    m_val *= scfx_pow2(b);
    SC_FXVAL_FAST_OBSERVER_WRITE_(*this)
    return *this;
}

inline sc_fxval_fast &
sc_fxval_fast::operator >>= (int b)
{
    SC_FXVAL_FAST_OBSERVER_READ_(*this)
    m_val *= scfx_pow2(-b);
    SC_FXVAL_FAST_OBSERVER_WRITE_(*this)
    return *this;
}

// auto-increment and auto-decrement
inline const sc_fxval_fast
sc_fxval_fast::operator ++ (int)
{
    SC_FXVAL_FAST_OBSERVER_READ_(*this)
    SC_FXVAL_FAST_OBSERVER_READ_(*this)
    double c = m_val;
    m_val = m_val + 1;
    SC_FXVAL_FAST_OBSERVER_WRITE_(*this)
    return sc_fxval_fast(c);
}

inline const sc_fxval_fast
sc_fxval_fast::operator -- (int)
{
    SC_FXVAL_FAST_OBSERVER_READ_(*this)
    SC_FXVAL_FAST_OBSERVER_READ_(*this)
    double c = m_val;
    m_val = m_val - 1;
    SC_FXVAL_FAST_OBSERVER_WRITE_(*this)
    return sc_fxval_fast(c);
}

inline sc_fxval_fast &
sc_fxval_fast::operator ++ ()
{
    SC_FXVAL_FAST_OBSERVER_READ_(*this)
    m_val = m_val + 1;
    SC_FXVAL_FAST_OBSERVER_WRITE_(*this)
    return *this;
}

inline sc_fxval_fast &
sc_fxval_fast::operator -- ()
{
    SC_FXVAL_FAST_OBSERVER_READ_(*this)
    m_val = m_val - 1;
    SC_FXVAL_FAST_OBSERVER_WRITE_(*this)
    return *this;
}

// implicit conversion
inline sc_fxval_fast::operator double() const
{
    SC_FXVAL_FAST_OBSERVER_READ_(*this)
    return m_val;
}

// explicit conversion to primitive types
inline short
sc_fxval_fast::to_short() const
{
    // SC_FXVAL_FAST_OBSERVER_READ_ in to_uint64
    return static_cast<short>(to_uint64());
}

inline unsigned short
sc_fxval_fast::to_ushort() const
{
    // SC_FXVAL_FAST_OBSERVER_READ_ in to_uint64
    return static_cast<unsigned short>(to_uint64());
}

inline int64
sc_fxval_fast::to_int64() const
{
    // SC_FXVAL_FAST_OBSERVER_READ_ in to_uint64
    return static_cast<int64>(to_uint64());
}

inline int
sc_fxval_fast::to_int() const
{
    // SC_FXVAL_FAST_OBSERVER_READ_ in to_uint64
    return static_cast<int>(to_uint64());
}

inline unsigned int
sc_fxval_fast::to_uint() const
{
    // SC_FXVAL_FAST_OBSERVER_READ_ in to_uint64
    return static_cast<unsigned int>(to_uint64());
}

inline uint64
sc_fxval_fast::to_uint64() const
{
    // SC_FXVAL_FAST_OBSERVER_READ_ in is_normal
    if (!is_normal()) {
        return 0;
    }

    int exponent;
    double mantissa_dbl = frexp(m_val, &exponent);

    uint64 mantissa = static_cast<uint64>(
        fabs(mantissa_dbl) * (UINT64_ONE << 53));
    exponent -= 53;

    if (!(-64 < exponent && exponent < 64)) {
        return 0;
    }

    mantissa = exponent >= 0 ? mantissa << exponent : mantissa >> -exponent;
    return mantissa_dbl >= 0 ? mantissa : -mantissa;
}

inline long
sc_fxval_fast::to_long() const
{
    // SC_FXVAL_FAST_OBSERVER_READ_ in to_uint64
    return static_cast<long>(to_uint64());
}

inline unsigned long
sc_fxval_fast::to_ulong() const
{
    // SC_FXVAL_FAST_OBSERVER_READ_ in to_uint64
    return static_cast<unsigned long>(to_uint64());
}

inline float
sc_fxval_fast::to_float() const
{
    SC_FXVAL_FAST_OBSERVER_READ_(*this)
    return static_cast<float>(m_val);
}

inline double
sc_fxval_fast::to_double() const
{
    SC_FXVAL_FAST_OBSERVER_READ_(*this)
    return m_val;
}

// query value
inline bool
sc_fxval_fast::is_neg() const
{
    SC_FXVAL_FAST_OBSERVER_READ_(*this)
    scfx_ieee_double id(m_val);
    return (id.negative() != 0);
}

inline bool
sc_fxval_fast::is_zero() const
{
    SC_FXVAL_FAST_OBSERVER_READ_(*this)
    scfx_ieee_double id(m_val);
    return id.is_zero();
}

inline bool
sc_fxval_fast::is_nan() const
{
    SC_FXVAL_FAST_OBSERVER_READ_(*this)
    scfx_ieee_double id(m_val);
    return id.is_nan();
}

inline bool
sc_fxval_fast::is_inf() const
{
    SC_FXVAL_FAST_OBSERVER_READ_(*this)
    scfx_ieee_double id(m_val);
    return id.is_inf();
}

inline bool
sc_fxval_fast::is_normal() const
{
    SC_FXVAL_FAST_OBSERVER_READ_(*this)
    scfx_ieee_double id(m_val);
    return (id.is_normal() || id.is_subnormal() || id.is_zero());
}

inline bool
sc_fxval_fast::rounding_flag() const
{
    // does not apply to sc_fxval_fast; included for API compatibility
    return false;
}

inline ::std::ostream &
operator << (::std::ostream &os, const sc_fxval_fast &a)
{
    a.print(os);
    return os;
}

inline ::std::istream &
operator >> (::std::istream &is, sc_fxval_fast &a)
{
    a.scan(is);
    return is;
}

} // namespace sc_dt

#undef SCFX_EXPLICIT_
#undef SCFX_EXPLICIT_OTHER_

#endif // __SYSTEMC_EXT_DT_FX_SC_FXVAL_HH__