gem5  v20.1.0.0
sc_fxval.hh
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21 
22  sc_fxval.h -
23 
24  Original Author: Martin Janssen, Synopsys, Inc.
25 
26  *****************************************************************************/
27 
28 /*****************************************************************************
29 
30  MODIFICATION LOG - modifiers, enter your name, affiliation, date and
31  changes you are making here.
32 
33  Name, Affiliation, Date:
34  Description of Modification:
35 
36  *****************************************************************************/
37 
38 // $Log: sc_fxval.h,v $
39 // Revision 1.3 2011/01/19 18:57:40 acg
40 // Andy Goodrich: changes for IEEE_1666_2011.
41 //
42 // Revision 1.2 2010/12/07 20:09:08 acg
43 // Andy Goodrich: Philipp Hartmann's constructor disambiguation fix
44 //
45 // Revision 1.1.1.1 2006/12/15 20:20:04 acg
46 // SystemC 2.3
47 //
48 // Revision 1.3 2006/01/13 18:53:58 acg
49 // Andy Goodrich: added $Log command so that CVS comments are reproduced in
50 // the source.
51 //
52 
53 #ifndef __SYSTEMC_EXT_DT_FX_SC_FXVAL_HH__
54 #define __SYSTEMC_EXT_DT_FX_SC_FXVAL_HH__
55 
56 #include <iostream>
57 
58 #include "../int/sc_int_base.hh"
59 #include "../int/sc_signed.hh"
60 #include "../int/sc_uint_base.hh"
61 #include "../int/sc_unsigned.hh"
62 #include "sc_fxval_observer.hh"
63 #include "scfx_rep.hh"
64 
65 #define SCFX_EXPLICIT_ explicit
66 #define SCFX_EXPLICIT_OTHER_ explicit
67 
68 namespace sc_dt
69 {
70 
71 // classes defined in this module
72 class sc_fxval;
73 class sc_fxval_fast;
74 
75 // forward class declarations
76 class sc_fxnum;
77 class sc_fxnum_fast;
78 
79 
80 // ----------------------------------------------------------------------------
81 // CLASS : sc_fxval
82 //
83 // Fixed-point value type; arbitrary precision.
84 // ----------------------------------------------------------------------------
85 
86 class sc_fxval
87 {
88  friend class sc_fxnum;
89 
90  protected:
91  sc_fxval_observer* observer() const;
92 
93  public:
94  // internal use only;
95  explicit sc_fxval(scfx_rep *);
96 
97  explicit sc_fxval(sc_fxval_observer * =0);
98  explicit sc_fxval(int, sc_fxval_observer * =0);
99  explicit sc_fxval(unsigned int, sc_fxval_observer * =0);
100  explicit sc_fxval(long, sc_fxval_observer * =0);
101  explicit sc_fxval(unsigned long, sc_fxval_observer * =0);
102  explicit sc_fxval(float, sc_fxval_observer* = 0);
103  explicit sc_fxval(double, sc_fxval_observer* = 0);
104  explicit sc_fxval(const char *, sc_fxval_observer* = 0);
105  sc_fxval(const sc_fxval &, sc_fxval_observer* = 0);
106  sc_fxval(const sc_fxval_fast &, sc_fxval_observer* = 0);
107  sc_fxval(const sc_fxnum &, sc_fxval_observer* = 0);
108  sc_fxval(const sc_fxnum_fast &, sc_fxval_observer* = 0);
109 
110  explicit sc_fxval(int64, sc_fxval_observer* = 0);
111  explicit sc_fxval(uint64, sc_fxval_observer* = 0);
112  explicit sc_fxval(const sc_int_base &, sc_fxval_observer* = 0);
113  explicit sc_fxval(const sc_uint_base &, sc_fxval_observer* = 0);
114  explicit sc_fxval(const sc_signed &, sc_fxval_observer* = 0);
115  explicit sc_fxval(const sc_unsigned &, sc_fxval_observer* = 0);
116 
117  ~sc_fxval();
118 
119  // internal use only;
120  const scfx_rep *get_rep() const;
121  void set_rep(scfx_rep *);
122 
123  // unary operators
124  const sc_fxval operator - () const;
125  const sc_fxval &operator + () const;
126 
127  // unary functions
128  friend void neg(sc_fxval &, const sc_fxval &);
129 
130  // binary operators
131 #define DECL_BIN_OP_T(op,tp) \
132  friend const sc_fxval operator op (const sc_fxval &, tp); \
133  friend const sc_fxval operator op (tp, const sc_fxval &);
134 
135 #define DECL_BIN_OP_OTHER(op) \
136  DECL_BIN_OP_T(op, int64) \
137  DECL_BIN_OP_T(op, uint64) \
138  DECL_BIN_OP_T(op, const sc_int_base &) \
139  DECL_BIN_OP_T(op, const sc_uint_base &) \
140  DECL_BIN_OP_T(op, const sc_signed &) \
141  DECL_BIN_OP_T(op, const sc_unsigned &)
142 
143 #define DECL_BIN_OP(op, dummy) \
144  friend const sc_fxval operator op (const sc_fxval &, const sc_fxval &); \
145  DECL_BIN_OP_T(op, int) \
146  DECL_BIN_OP_T(op, unsigned int) \
147  DECL_BIN_OP_T(op, long) \
148  DECL_BIN_OP_T(op, unsigned long) \
149  DECL_BIN_OP_T(op, float) \
150  DECL_BIN_OP_T(op, double) \
151  DECL_BIN_OP_T(op, const char *) \
152  DECL_BIN_OP_T(op, const sc_fxval_fast &) \
153  DECL_BIN_OP_T(op, const sc_fxnum_fast &) \
154  DECL_BIN_OP_OTHER(op)
155 
156  DECL_BIN_OP(*, mult)
157  DECL_BIN_OP(+, add)
158  DECL_BIN_OP(-, sub)
159 // declaration below doesn't compile with BCB5 (E2206)
160 // DECL_BIN_OP(/, div)
161 // previous macro expanded
162  friend const sc_fxval operator / (const sc_fxval &, const sc_fxval &);
163  DECL_BIN_OP_T(/, int)
164  DECL_BIN_OP_T(/, unsigned int)
165  DECL_BIN_OP_T(/, long)
166  DECL_BIN_OP_T(/, unsigned long)
167  DECL_BIN_OP_T(/, float)
168  DECL_BIN_OP_T(/, double)
169  DECL_BIN_OP_T(/, const char *)
170  DECL_BIN_OP_T(/, const sc_fxval_fast &)
171  DECL_BIN_OP_T(/, const sc_fxnum_fast &)
172 // DECL_BIN_OP_OTHER(/)
173 
174  DECL_BIN_OP_T(/, int64)
175  DECL_BIN_OP_T(/, uint64)
176  DECL_BIN_OP_T(/, const sc_int_base &)
177  DECL_BIN_OP_T(/, const sc_uint_base &)
178  DECL_BIN_OP_T(/, const sc_signed &)
179  DECL_BIN_OP_T(/, const sc_unsigned &)
180 
181 #undef DECL_BIN_OP_T
182 #undef DECL_BIN_OP_OTHER
183 #undef DECL_BIN_OP
184 
185  friend const sc_fxval operator << (const sc_fxval &, int);
186  friend const sc_fxval operator >> (const sc_fxval &, int);
187 
188  // binary functions
189 #define DECL_BIN_FNC_T(fnc, tp) \
190  friend void fnc (sc_fxval &, const sc_fxval &, tp); \
191  friend void fnc (sc_fxval &, tp, const sc_fxval &);
192 
193 #define DECL_BIN_FNC_OTHER(fnc) \
194  DECL_BIN_FNC_T(fnc, int64) \
195  DECL_BIN_FNC_T(fnc, uint64) \
196  DECL_BIN_FNC_T(fnc, const sc_int_base &) \
197  DECL_BIN_FNC_T(fnc, const sc_uint_base &) \
198  DECL_BIN_FNC_T(fnc, const sc_signed &) \
199  DECL_BIN_FNC_T(fnc, const sc_unsigned &)
200 
201 #define DECL_BIN_FNC(fnc) \
202  friend void fnc (sc_fxval &, const sc_fxval &, const sc_fxval &); \
203  DECL_BIN_FNC_T(fnc, int) \
204  DECL_BIN_FNC_T(fnc, unsigned int) \
205  DECL_BIN_FNC_T(fnc, long) \
206  DECL_BIN_FNC_T(fnc, unsigned long) \
207  DECL_BIN_FNC_T(fnc, float) \
208  DECL_BIN_FNC_T(fnc, double) \
209  DECL_BIN_FNC_T(fnc, const char *) \
210  DECL_BIN_FNC_T(fnc, const sc_fxval_fast &) \
211  DECL_BIN_FNC_T(fnc, const sc_fxnum_fast &) \
212  DECL_BIN_FNC_OTHER(fnc)
213 
214  DECL_BIN_FNC(mult)
215  DECL_BIN_FNC(div)
216  DECL_BIN_FNC(add)
217  DECL_BIN_FNC(sub)
218 
219 #undef DECL_BIN_FNC_T
220 #undef DECL_BIN_FNC_OTHER
221 #undef DECL_BIN_FNC
222 
223  friend void lshift(sc_fxval &, const sc_fxval &, int);
224  friend void rshift(sc_fxval &, const sc_fxval &, int);
225 
226  // relational (including equality) operators
227 #define DECL_REL_OP_T(op, tp) \
228  friend bool operator op (const sc_fxval &, tp); \
229  friend bool operator op (tp, const sc_fxval &);
230 
231 #define DECL_REL_OP_OTHER(op) \
232  DECL_REL_OP_T(op, int64) \
233  DECL_REL_OP_T(op, uint64) \
234  DECL_REL_OP_T(op, const sc_int_base &) \
235  DECL_REL_OP_T(op, const sc_uint_base &) \
236  DECL_REL_OP_T(op, const sc_signed &) \
237  DECL_REL_OP_T(op, const sc_unsigned &)
238 
239 #define DECL_REL_OP(op) \
240  friend bool operator op (const sc_fxval &, const sc_fxval &); \
241  DECL_REL_OP_T(op, int) \
242  DECL_REL_OP_T(op, unsigned int) \
243  DECL_REL_OP_T(op, long) \
244  DECL_REL_OP_T(op, unsigned long) \
245  DECL_REL_OP_T(op, float) \
246  DECL_REL_OP_T(op, double) \
247  DECL_REL_OP_T(op, const char *) \
248  DECL_REL_OP_T(op, const sc_fxval_fast &) \
249  DECL_REL_OP_T(op, const sc_fxnum_fast &) \
250  DECL_REL_OP_OTHER(op)
251 
252  DECL_REL_OP(<)
253  DECL_REL_OP(<=)
254  DECL_REL_OP(>)
255  DECL_REL_OP(>=)
256  DECL_REL_OP(==)
257  DECL_REL_OP(!=)
258 
259 #undef DECL_REL_OP_T
260 #undef DECL_REL_OP_OTHER
261 #undef DECL_REL_OP
262 
263  // assignment operators
264 #define DECL_ASN_OP_T(op, tp) sc_fxval &operator op(tp);
265 
266 #define DECL_ASN_OP_OTHER(op) \
267  DECL_ASN_OP_T(op, int64) \
268  DECL_ASN_OP_T(op, uint64) \
269  DECL_ASN_OP_T(op, const sc_int_base &) \
270  DECL_ASN_OP_T(op, const sc_uint_base &) \
271  DECL_ASN_OP_T(op, const sc_signed &) \
272  DECL_ASN_OP_T(op, const sc_unsigned &)
273 
274 #define DECL_ASN_OP(op) \
275  DECL_ASN_OP_T(op, int) \
276  DECL_ASN_OP_T(op, unsigned int) \
277  DECL_ASN_OP_T(op, long) \
278  DECL_ASN_OP_T(op, unsigned long) \
279  DECL_ASN_OP_T(op, float) \
280  DECL_ASN_OP_T(op, double) \
281  DECL_ASN_OP_T(op, const char *) \
282  DECL_ASN_OP_T(op, const sc_fxval &) \
283  DECL_ASN_OP_T(op, const sc_fxval_fast &) \
284  DECL_ASN_OP_T(op, const sc_fxnum &) \
285  DECL_ASN_OP_T(op, const sc_fxnum_fast &) \
286  DECL_ASN_OP_OTHER(op)
287 
288  DECL_ASN_OP(=)
289 
290  DECL_ASN_OP(*=)
291  DECL_ASN_OP(/=)
292  DECL_ASN_OP(+=)
293  DECL_ASN_OP(-=)
294 
295  DECL_ASN_OP_T(<<=, int)
296  DECL_ASN_OP_T(>>=, int)
297 
298 #undef DECL_ASN_OP_T
299 #undef DECL_ASN_OP_OTHER
300 #undef DECL_ASN_OP
301 
302  // auto-increment and auto-decrement
303  const sc_fxval operator ++ (int);
304  const sc_fxval operator -- (int);
305 
306  sc_fxval & operator ++ ();
307  sc_fxval & operator -- ();
308 
309  // implicit conversion
310  operator double() const; // necessary evil!
311 
312  // explicit conversion to primitive types
313  short to_short() const;
314  unsigned short to_ushort() const;
315  int to_int() const;
316  unsigned int to_uint() const;
317  long to_long() const;
318  unsigned long to_ulong() const;
319  int64 to_int64() const;
320  uint64 to_uint64() const;
321  float to_float() const;
322  double to_double() const;
323 
324  // explicit conversion to character string
325  const std::string to_string() const;
326  const std::string to_string(sc_numrep) const;
327  const std::string to_string(sc_numrep, bool) const;
328  const std::string to_string(sc_fmt) const;
329  const std::string to_string(sc_numrep, sc_fmt) const;
330  const std::string to_string(sc_numrep, bool, sc_fmt) const;
331 
332  const std::string to_dec() const;
333  const std::string to_bin() const;
334  const std::string to_oct() const;
335  const std::string to_hex() const;
336 
337  // query value
338  bool is_neg() const;
339  bool is_zero() const;
340  bool is_nan() const;
341  bool is_inf() const;
342  bool is_normal() const;
343 
344  bool rounding_flag() const;
345 
346  // print or dump content
347  void print(::std::ostream & =::std::cout) const;
348  void scan(::std::istream & =::std::cin);
349  void dump(::std::ostream & =::std::cout) const;
350 
351  // internal use only;
352  bool get_bit(int) const;
353 
354  protected:
355  sc_fxval_observer *lock_observer() const;
356  void unlock_observer(sc_fxval_observer *) const;
357 
358  void get_type(int &, int &, sc_enc &) const;
359 
360  const sc_fxval quantization(const scfx_params &, bool &) const;
361  const sc_fxval overflow(const scfx_params &, bool &) const;
362 
363  private:
364  scfx_rep * m_rep;
365 
366  mutable sc_fxval_observer *m_observer;
367 };
368 
369 
370 // ----------------------------------------------------------------------------
371 // CLASS : sc_fxval_fast
372 //
373 // Fixed-point value type; limited precision.
374 // ----------------------------------------------------------------------------
375 
376 class sc_fxval_fast
377 {
378  friend class sc_fxnum_fast;
379 
380  protected:
381  sc_fxval_fast_observer *observer() const;
382 
383  public:
384  explicit sc_fxval_fast(sc_fxval_fast_observer * =0);
385  explicit sc_fxval_fast(int, sc_fxval_fast_observer * =0);
386  explicit sc_fxval_fast(unsigned int, sc_fxval_fast_observer * =0);
387  explicit sc_fxval_fast(long, sc_fxval_fast_observer * =0);
388  explicit sc_fxval_fast(unsigned long, sc_fxval_fast_observer * =0);
389  explicit sc_fxval_fast(float, sc_fxval_fast_observer * =0);
390  explicit sc_fxval_fast(double, sc_fxval_fast_observer * =0);
391  explicit sc_fxval_fast(const char *, sc_fxval_fast_observer * =0);
392  sc_fxval_fast(const sc_fxval &, sc_fxval_fast_observer * =0);
393  sc_fxval_fast(const sc_fxval_fast &, sc_fxval_fast_observer * =0);
394  sc_fxval_fast(const sc_fxnum &, sc_fxval_fast_observer * =0);
395  sc_fxval_fast(const sc_fxnum_fast &, sc_fxval_fast_observer * =0);
396 
397  explicit sc_fxval_fast(int64, sc_fxval_fast_observer * =0);
398  explicit sc_fxval_fast(uint64, sc_fxval_fast_observer * =0);
399  explicit sc_fxval_fast(const sc_int_base &, sc_fxval_fast_observer * =0);
400  explicit sc_fxval_fast(const sc_uint_base &, sc_fxval_fast_observer * =0);
401  explicit sc_fxval_fast(const sc_signed &, sc_fxval_fast_observer * =0);
402  explicit sc_fxval_fast(const sc_unsigned &, sc_fxval_fast_observer * =0);
403 
404  ~sc_fxval_fast();
405 
406  // internal use only;
407  double get_val() const;
408  void set_val(double);
409 
410  // unary operators
411  const sc_fxval_fast operator - () const;
412  const sc_fxval_fast & operator + () const;
413 
414  // unary functions
415  friend void neg(sc_fxval_fast &, const sc_fxval_fast &);
416 
417  // binary operators
418 #define DECL_BIN_OP_T(op, tp) \
419  friend const sc_fxval_fast operator op (const sc_fxval_fast &, tp); \
420  friend const sc_fxval_fast operator op (tp, const sc_fxval_fast &);
421 
422 #define DECL_BIN_OP_OTHER(op) \
423  DECL_BIN_OP_T(op, int64) \
424  DECL_BIN_OP_T(op, uint64) \
425  DECL_BIN_OP_T(op, const sc_int_base &) \
426  DECL_BIN_OP_T(op, const sc_uint_base &) \
427  DECL_BIN_OP_T(op, const sc_signed &) \
428  DECL_BIN_OP_T(op, const sc_unsigned &)
429 
430 #define DECL_BIN_OP(op, dummy) \
431  friend const sc_fxval_fast operator op (const sc_fxval_fast &, \
432  const sc_fxval_fast &); \
433  DECL_BIN_OP_T(op, int) \
434  DECL_BIN_OP_T(op, unsigned int) \
435  DECL_BIN_OP_T(op, long) \
436  DECL_BIN_OP_T(op, unsigned long) \
437  DECL_BIN_OP_T(op, float) \
438  DECL_BIN_OP_T(op, double) \
439  DECL_BIN_OP_T(op, const char *) \
440  DECL_BIN_OP_OTHER(op)
441 
442  DECL_BIN_OP(*, mult)
443  DECL_BIN_OP(+, add)
444  DECL_BIN_OP(-, sub)
445 // don't use macro
446 // DECL_BIN_OP(/, div)
447  friend const sc_fxval_fast operator / (const sc_fxval_fast &,
448  const sc_fxval_fast &);
449  DECL_BIN_OP_T(/, int)
450  DECL_BIN_OP_T(/, unsigned int)
451  DECL_BIN_OP_T(/, long)
452  DECL_BIN_OP_T(/, unsigned long)
453  DECL_BIN_OP_T(/, float)
454  DECL_BIN_OP_T(/, double)
455  DECL_BIN_OP_T(/, const char *)
456 // DECL_BIN_OP_OTHER(/)
457 
458  DECL_BIN_OP_T(/, int64) \
459  DECL_BIN_OP_T(/, uint64) \
460  DECL_BIN_OP_T(/, const sc_int_base &) \
461  DECL_BIN_OP_T(/, const sc_uint_base &) \
462  DECL_BIN_OP_T(/, const sc_signed &) \
463  DECL_BIN_OP_T(/, const sc_unsigned &)
464 
465 #undef DECL_BIN_OP_T
466 #undef DECL_BIN_OP_OTHER
467 #undef DECL_BIN_OP
468 
469  friend const sc_fxval_fast operator << (const sc_fxval_fast &, int);
470  friend const sc_fxval_fast operator >> (const sc_fxval_fast &, int);
471 
472  // binary functions
473 #define DECL_BIN_FNC_T(fnc, tp) \
474  friend void fnc (sc_fxval_fast &, const sc_fxval_fast &, tp); \
475  friend void fnc (sc_fxval_fast &, tp, const sc_fxval_fast &);
476 
477 #define DECL_BIN_FNC_OTHER(fnc) \
478  DECL_BIN_FNC_T(fnc, int64) \
479  DECL_BIN_FNC_T(fnc, uint64) \
480  DECL_BIN_FNC_T(fnc, const sc_int_base &) \
481  DECL_BIN_FNC_T(fnc, const sc_uint_base &) \
482  DECL_BIN_FNC_T(fnc, const sc_signed &) \
483  DECL_BIN_FNC_T(fnc, const sc_unsigned &)
484 
485 #define DECL_BIN_FNC(fnc) \
486  friend void fnc (sc_fxval_fast &, const sc_fxval_fast &, \
487  const sc_fxval_fast &); \
488  DECL_BIN_FNC_T(fnc, int) \
489  DECL_BIN_FNC_T(fnc, unsigned int) \
490  DECL_BIN_FNC_T(fnc, long) \
491  DECL_BIN_FNC_T(fnc, unsigned long) \
492  DECL_BIN_FNC_T(fnc, float) \
493  DECL_BIN_FNC_T(fnc, double) \
494  DECL_BIN_FNC_T(fnc, const char *) \
495  DECL_BIN_FNC_T(fnc, const sc_fxval &) \
496  DECL_BIN_FNC_T(fnc, const sc_fxnum &) \
497  DECL_BIN_FNC_OTHER(fnc)
498 
499  DECL_BIN_FNC(mult)
500  DECL_BIN_FNC(div)
501  DECL_BIN_FNC(add)
502  DECL_BIN_FNC(sub)
503 
504 #undef DECL_BIN_FNC_T
505 #undef DECL_BIN_FNC_OTHER
506 #undef DECL_BIN_FNC
507 
508  friend void lshift(sc_fxval_fast &, const sc_fxval_fast &, int);
509  friend void rshift(sc_fxval_fast &, const sc_fxval_fast &, int);
510 
511  // relational (including equality) operators
512 #define DECL_REL_OP_T(op, tp) \
513  friend bool operator op (const sc_fxval_fast &, tp); \
514  friend bool operator op (tp, const sc_fxval_fast &);
515 
516 #define DECL_REL_OP_OTHER(op) \
517  DECL_REL_OP_T(op, int64) \
518  DECL_REL_OP_T(op, uint64) \
519  DECL_REL_OP_T(op, const sc_int_base &) \
520  DECL_REL_OP_T(op, const sc_uint_base &) \
521  DECL_REL_OP_T(op, const sc_signed &) \
522  DECL_REL_OP_T(op, const sc_unsigned &)
523 
524 #define DECL_REL_OP(op) \
525  friend bool operator op (const sc_fxval_fast &, const sc_fxval_fast &); \
526  DECL_REL_OP_T(op, int) \
527  DECL_REL_OP_T(op, unsigned int) \
528  DECL_REL_OP_T(op, long) \
529  DECL_REL_OP_T(op, unsigned long) \
530  DECL_REL_OP_T(op, float) \
531  DECL_REL_OP_T(op, double) \
532  DECL_REL_OP_T(op, const char *) \
533  DECL_REL_OP_OTHER(op)
534 
535  DECL_REL_OP(<)
536  DECL_REL_OP(<=)
537  DECL_REL_OP(>)
538  DECL_REL_OP(>=)
539  DECL_REL_OP(==)
540  DECL_REL_OP(!=)
541 
542 #undef DECL_REL_OP_T
543 #undef DECL_REL_OP_OTHER
544 #undef DECL_REL_OP
545 
546  // assignment operators
547 #define DECL_ASN_OP_T(op, tp) sc_fxval_fast &operator op(tp);
548 
549 #define DECL_ASN_OP_OTHER(op) \
550  DECL_ASN_OP_T(op, int64) \
551  DECL_ASN_OP_T(op, uint64) \
552  DECL_ASN_OP_T(op, const sc_int_base &) \
553  DECL_ASN_OP_T(op, const sc_uint_base &) \
554  DECL_ASN_OP_T(op, const sc_signed &) \
555  DECL_ASN_OP_T(op, const sc_unsigned &)
556 
557 #define DECL_ASN_OP(op) \
558  DECL_ASN_OP_T(op, int) \
559  DECL_ASN_OP_T(op, unsigned int) \
560  DECL_ASN_OP_T(op, long) \
561  DECL_ASN_OP_T(op, unsigned long) \
562  DECL_ASN_OP_T(op, float) \
563  DECL_ASN_OP_T(op, double) \
564  DECL_ASN_OP_T(op, const char *) \
565  DECL_ASN_OP_T(op, const sc_fxval &) \
566  DECL_ASN_OP_T(op, const sc_fxval_fast &) \
567  DECL_ASN_OP_T(op, const sc_fxnum &) \
568  DECL_ASN_OP_T(op, const sc_fxnum_fast &) \
569  DECL_ASN_OP_OTHER(op)
570 
571  DECL_ASN_OP(=)
572 
573  DECL_ASN_OP(*=)
574  DECL_ASN_OP(/=)
575  DECL_ASN_OP(+=)
576  DECL_ASN_OP(-=)
577 
578  DECL_ASN_OP_T(<<=, int)
579  DECL_ASN_OP_T(>>=, int)
580 
581 #undef DECL_ASN_OP_T
582 #undef DECL_ASN_OP_OTHER
583 #undef DECL_ASN_OP
584 
585  // auto-increment and auto-decrement
586  const sc_fxval_fast operator ++ (int);
587  const sc_fxval_fast operator -- (int);
588 
589  sc_fxval_fast & operator ++ ();
590  sc_fxval_fast & operator -- ();
591 
592  // implicit conversion
593  operator double() const; // necessary evil!
594 
595  // explicit conversion to primitive types
596  short to_short() const;
597  unsigned short to_ushort() const;
598  int to_int() const;
599  unsigned int to_uint() const;
600  long to_long() const;
601  unsigned long to_ulong() const;
602  int64 to_int64() const;
603  uint64 to_uint64() const;
604  float to_float() const;
605  double to_double() const;
606 
607  // explicit conversion to character string
608  const std::string to_string() const;
609  const std::string to_string(sc_numrep) const;
610  const std::string to_string(sc_numrep, bool) const;
611  const std::string to_string(sc_fmt) const;
612  const std::string to_string(sc_numrep, sc_fmt) const;
613  const std::string to_string(sc_numrep, bool, sc_fmt) const;
614 
615  const std::string to_dec() const;
616  const std::string to_bin() const;
617  const std::string to_oct() const;
618  const std::string to_hex() const;
619 
620  // query value
621  bool is_neg() const;
622  bool is_zero() const;
623  bool is_nan() const;
624  bool is_inf() const;
625  bool is_normal() const;
626 
627  bool rounding_flag() const;
628 
629  // print or dump content
630  void print(::std::ostream & =::std::cout) const;
631  void scan(::std::istream & =::std::cin);
632  void dump(::std::ostream & =::std::cout) const;
633 
634  // internal use only;
635  bool get_bit(int) const;
636 
637  protected:
638  sc_fxval_fast_observer *lock_observer() const;
639  void unlock_observer(sc_fxval_fast_observer *) const;
640 
641  static double from_string(const char *);
642  private:
643  double m_val;
644 
645  mutable sc_fxval_fast_observer *m_observer;
646 };
647 
648 
649 // IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
650 
651 // ----------------------------------------------------------------------------
652 // CLASS : sc_fxval
653 //
654 // Fixed-point value type; arbitrary precision.
655 // ----------------------------------------------------------------------------
656 
657 // protected method
658 
659 inline sc_fxval_observer *sc_fxval::observer() const { return m_observer; }
660 
661 // internal use only;
662 inline sc_fxval::sc_fxval(scfx_rep *a) :
663  m_rep(a != 0 ? a : new scfx_rep), m_observer(0)
664 {}
665 
666 
667 // public constructors
668 
669 inline sc_fxval::sc_fxval(sc_fxval_observer *observer_) :
670  m_rep(new scfx_rep), m_observer(observer_)
671 {
672  SC_FXVAL_OBSERVER_DEFAULT_
673  SC_FXVAL_OBSERVER_CONSTRUCT_(*this)
674 }
675 
676 inline sc_fxval::sc_fxval(const sc_fxval &a, sc_fxval_observer *observer_) :
677  m_rep(new scfx_rep(*a.m_rep)), m_observer(observer_)
678 {
679  SC_FXVAL_OBSERVER_DEFAULT_
680  SC_FXVAL_OBSERVER_READ_(a)
681  SC_FXVAL_OBSERVER_CONSTRUCT_(*this)
682  SC_FXVAL_OBSERVER_WRITE_(*this)
683 }
684 
685 #define DEFN_CTOR_T(tp, arg) \
686 inline sc_fxval::sc_fxval(tp a, sc_fxval_observer *observer_) : \
687  m_rep(new scfx_rep(arg)), m_observer(observer_) \
688 { \
689  SC_FXVAL_OBSERVER_DEFAULT_ \
690  SC_FXVAL_OBSERVER_CONSTRUCT_(*this) \
691  SC_FXVAL_OBSERVER_WRITE_(*this) \
692 }
693 
694 #define DEFN_CTOR_T_A(tp) DEFN_CTOR_T(tp, a)
695 #define DEFN_CTOR_T_B(tp) DEFN_CTOR_T(tp, a.to_double())
696 #define DEFN_CTOR_T_C(tp) DEFN_CTOR_T(tp, a.value())
697 
698 DEFN_CTOR_T_A(int)
699 DEFN_CTOR_T_A(unsigned int)
700 DEFN_CTOR_T_A(long)
701 DEFN_CTOR_T_A(unsigned long)
702 DEFN_CTOR_T_A(float)
703 DEFN_CTOR_T_A(double)
704 DEFN_CTOR_T_A(const char *)
705 DEFN_CTOR_T_B(const sc_fxval_fast &)
706 
707 DEFN_CTOR_T_A(int64)
708 DEFN_CTOR_T_A(uint64)
709 DEFN_CTOR_T_C(const sc_int_base &)
710 DEFN_CTOR_T_C(const sc_uint_base &)
711 DEFN_CTOR_T_A(const sc_signed &)
712 DEFN_CTOR_T_A(const sc_unsigned &)
713 
714 #undef DEFN_CTOR_T
715 #undef DEFN_CTOR_T_A
716 #undef DEFN_CTOR_T_B
717 #undef DEFN_CTOR_T_C
718 
719 inline sc_fxval::~sc_fxval()
720 {
721  SC_FXVAL_OBSERVER_DESTRUCT_(*this)
722  delete m_rep;
723 }
724 
725 // internal use only;
726 inline const scfx_rep *
727 sc_fxval::get_rep() const
728 {
729  SC_FXVAL_OBSERVER_READ_(*this)
730  return m_rep;
731 }
732 
733 // internal use only;
734 inline void
735 sc_fxval::set_rep(scfx_rep *rep_)
736 {
737  delete m_rep;
738  m_rep = rep_;
739  SC_FXVAL_OBSERVER_WRITE_(*this)
740 }
741 
742 // unary operators
743 inline const sc_fxval
744 sc_fxval::operator - () const
745 {
746  SC_FXVAL_OBSERVER_READ_(*this)
747  return sc_fxval(sc_dt::neg_scfx_rep(*m_rep));
748 }
749 
750 inline const sc_fxval &
751 sc_fxval::operator + () const
752 {
753  // SC_FXVAL_OBSERVER_READ_(*this)
754  return *this;
755 }
756 
757 // unary functions
758 inline void
759 neg(sc_fxval &c, const sc_fxval &a)
760 {
761  SC_FXVAL_OBSERVER_READ_(a)
762  delete c.m_rep;
763  c.m_rep = sc_dt::neg_scfx_rep(*a.m_rep);
764  SC_FXVAL_OBSERVER_WRITE_(c)
765 }
766 
767 // binary operators
768 #define DEFN_BIN_OP_T(op, fnc, tp) \
769 inline const sc_fxval \
770 operator op (const sc_fxval &a, tp b) \
771 { \
772  SC_FXVAL_OBSERVER_READ_(a) \
773  sc_fxval tmp(b); \
774  return sc_fxval(sc_dt::fnc ## _scfx_rep(*a.m_rep, *tmp.m_rep)); \
775 } \
776  \
777 inline \
778 const sc_fxval \
779 operator op (tp a, const sc_fxval &b) \
780 { \
781  SC_FXVAL_OBSERVER_READ_(b) \
782  sc_fxval tmp(a); \
783  return sc_fxval(sc_dt::fnc ## _scfx_rep(*tmp.m_rep, *b.m_rep)); \
784 }
785 
786 #define DEFN_BIN_OP_OTHER(op, fnc) \
787 DEFN_BIN_OP_T(op, fnc, int64) \
788 DEFN_BIN_OP_T(op, fnc, uint64) \
789 DEFN_BIN_OP_T(op, fnc, const sc_int_base &) \
790 DEFN_BIN_OP_T(op, fnc, const sc_uint_base &) \
791 DEFN_BIN_OP_T(op, fnc, const sc_signed &) \
792 DEFN_BIN_OP_T(op, fnc, const sc_unsigned &)
793 
794 #define DEFN_BIN_OP(op, fnc) \
795 inline const sc_fxval \
796 operator op (const sc_fxval &a, const sc_fxval &b) \
797 { \
798  SC_FXVAL_OBSERVER_READ_(a) \
799  SC_FXVAL_OBSERVER_READ_(b) \
800  return sc_fxval(sc_dt::fnc ## _scfx_rep( *a.m_rep, *b.m_rep)); \
801 } \
802  \
803 DEFN_BIN_OP_T(op, fnc, int) \
804 DEFN_BIN_OP_T(op, fnc, unsigned int) \
805 DEFN_BIN_OP_T(op, fnc, long) \
806 DEFN_BIN_OP_T(op, fnc, unsigned long) \
807 DEFN_BIN_OP_T(op, fnc, float) \
808 DEFN_BIN_OP_T(op, fnc, double) \
809 DEFN_BIN_OP_T(op, fnc, const char *) \
810 DEFN_BIN_OP_T(op, fnc, const sc_fxval_fast &) \
811 DEFN_BIN_OP_OTHER(op, fnc)
812 
813 DEFN_BIN_OP(*, mult)
814 DEFN_BIN_OP(+, add)
815 DEFN_BIN_OP(-, sub)
816 // don't use macro
817 //DEFN_BIN_OP(/, div)
818 inline const sc_fxval
819 operator / (const sc_fxval &a, const sc_fxval &b)
820 {
821  SC_FXVAL_OBSERVER_READ_(a)
822  SC_FXVAL_OBSERVER_READ_(b)
823  return sc_fxval(sc_dt::div_scfx_rep(*a.m_rep, *b.m_rep));
824 }
825 
826 DEFN_BIN_OP_T(/, div, int)
827 DEFN_BIN_OP_T(/, div, unsigned int)
828 DEFN_BIN_OP_T(/, div, long)
829 DEFN_BIN_OP_T(/, div, unsigned long)
830 DEFN_BIN_OP_T(/, div, float)
831 DEFN_BIN_OP_T(/, div, double)
832 DEFN_BIN_OP_T(/, div, const char *)
833 DEFN_BIN_OP_T(/, div, const sc_fxval_fast &)
834 //DEFN_BIN_OP_OTHER(/, div)
835 
836 DEFN_BIN_OP_T(/, div, int64)
837 DEFN_BIN_OP_T(/, div, uint64)
838 DEFN_BIN_OP_T(/, div, const sc_int_base &)
839 DEFN_BIN_OP_T(/, div, const sc_uint_base &)
840 DEFN_BIN_OP_T(/, div, const sc_signed &)
841 DEFN_BIN_OP_T(/, div, const sc_unsigned &)
842 
843 #undef DEFN_BIN_OP_T
844 #undef DEFN_BIN_OP_OTHER
845 #undef DEFN_BIN_OP
846 
847 inline const sc_fxval
848 operator << (const sc_fxval &a, int b)
849 {
850  SC_FXVAL_OBSERVER_READ_(a)
851  return sc_fxval(sc_dt::lsh_scfx_rep(*a.m_rep, b));
852 }
853 
854 inline const sc_fxval
855 operator >> (const sc_fxval &a, int b)
856 {
857  SC_FXVAL_OBSERVER_READ_(a)
858  return sc_fxval(sc_dt::rsh_scfx_rep(*a.m_rep, b));
859 }
860 
861 // binary functions
862 #define DEFN_BIN_FNC_T(fnc, tp) \
863 inline void \
864 fnc (sc_fxval &c, const sc_fxval &a, tp b) \
865 { \
866  SC_FXVAL_OBSERVER_READ_(a) \
867  sc_fxval tmp(b); \
868  delete c.m_rep; \
869  c.m_rep = sc_dt::fnc ## _scfx_rep(*a.m_rep, *tmp.m_rep); \
870  SC_FXVAL_OBSERVER_WRITE_(c) \
871 } \
872  \
873 inline void \
874 fnc (sc_fxval &c, tp a, const sc_fxval &b) \
875 { \
876  SC_FXVAL_OBSERVER_READ_(b) \
877  sc_fxval tmp(a); \
878  delete c.m_rep; \
879  c.m_rep = sc_dt::fnc ## _scfx_rep(*tmp.m_rep, *b.m_rep); \
880  SC_FXVAL_OBSERVER_WRITE_(c) \
881 }
882 
883 #define DEFN_BIN_FNC_OTHER(fnc) \
884 DEFN_BIN_FNC_T(fnc, int64) \
885 DEFN_BIN_FNC_T(fnc, uint64) \
886 DEFN_BIN_FNC_T(fnc, const sc_int_base &) \
887 DEFN_BIN_FNC_T(fnc, const sc_uint_base &) \
888 DEFN_BIN_FNC_T(fnc, const sc_signed &) \
889 DEFN_BIN_FNC_T(fnc, const sc_unsigned &)
890 
891 #define DEFN_BIN_FNC(fnc) \
892 inline void \
893 fnc(sc_fxval &c, const sc_fxval &a, const sc_fxval &b) \
894 { \
895  SC_FXVAL_OBSERVER_READ_(a) \
896  SC_FXVAL_OBSERVER_READ_(b) \
897  delete c.m_rep; \
898  c.m_rep = sc_dt::fnc ## _scfx_rep(*a.m_rep, *b.m_rep); \
899  SC_FXVAL_OBSERVER_WRITE_(c) \
900 } \
901  \
902 DEFN_BIN_FNC_T(fnc, int) \
903 DEFN_BIN_FNC_T(fnc, unsigned int) \
904 DEFN_BIN_FNC_T(fnc, long) \
905 DEFN_BIN_FNC_T(fnc, unsigned long) \
906 DEFN_BIN_FNC_T(fnc, float) \
907 DEFN_BIN_FNC_T(fnc, double) \
908 DEFN_BIN_FNC_T(fnc, const char *) \
909 DEFN_BIN_FNC_T(fnc, const sc_fxval_fast &) \
910 DEFN_BIN_FNC_OTHER(fnc)
911 
912 DEFN_BIN_FNC(mult)
913 DEFN_BIN_FNC(div)
914 DEFN_BIN_FNC(add)
915 DEFN_BIN_FNC(sub)
916 
917 #undef DEFN_BIN_FNC_T
918 #undef DEFN_BIN_FNC_OTHER
919 #undef DEFN_BIN_FNC
920 
921 inline void
922 lshift(sc_fxval &c, const sc_fxval &a, int b)
923 {
924  SC_FXVAL_OBSERVER_READ_(a)
925  delete c.m_rep;
926  c.m_rep = sc_dt::lsh_scfx_rep(*a.m_rep, b);
927  SC_FXVAL_OBSERVER_WRITE_(c)
928 }
929 
930 inline void
931 rshift(sc_fxval &c, const sc_fxval &a, int b)
932 {
933  SC_FXVAL_OBSERVER_READ_(a)
934  delete c.m_rep;
935  c.m_rep = sc_dt::rsh_scfx_rep(*a.m_rep, b);
936  SC_FXVAL_OBSERVER_WRITE_(c)
937 }
938 
939 // relational (including equality) operators
940 #define DEFN_REL_OP_T(op, ret, tp) \
941 inline bool \
942 operator op (const sc_fxval &a, tp b) \
943 { \
944  SC_FXVAL_OBSERVER_READ_(a) \
945  sc_fxval tmp(b); \
946  int result = sc_dt::cmp_scfx_rep(*a.m_rep, *tmp.m_rep); \
947  return (ret); \
948 } \
949  \
950 inline bool \
951 operator op (tp a, const sc_fxval &b) \
952 { \
953  SC_FXVAL_OBSERVER_READ_(b) \
954  sc_fxval tmp(a); \
955  int result = sc_dt::cmp_scfx_rep(*tmp.m_rep, *b.m_rep); \
956  return (ret); \
957 }
958 
959 #define DEFN_REL_OP_OTHER(op, ret) \
960 DEFN_REL_OP_T(op, ret, int64) \
961 DEFN_REL_OP_T(op, ret, uint64) \
962 DEFN_REL_OP_T(op, ret, const sc_int_base &) \
963 DEFN_REL_OP_T(op, ret, const sc_uint_base &) \
964 DEFN_REL_OP_T(op, ret, const sc_signed &) \
965 DEFN_REL_OP_T(op, ret, const sc_unsigned &)
966 
967 #define DEFN_REL_OP(op, ret) \
968 inline bool \
969 operator op (const sc_fxval &a, const sc_fxval &b) \
970 { \
971  SC_FXVAL_OBSERVER_READ_(a) \
972  SC_FXVAL_OBSERVER_READ_(b) \
973  int result = sc_dt::cmp_scfx_rep(*a.m_rep, *b.m_rep); \
974  return (ret); \
975 } \
976  \
977 DEFN_REL_OP_T(op, ret, int) \
978 DEFN_REL_OP_T(op, ret, unsigned int) \
979 DEFN_REL_OP_T(op, ret, long) \
980 DEFN_REL_OP_T(op, ret, unsigned long) \
981 DEFN_REL_OP_T(op, ret, float) \
982 DEFN_REL_OP_T(op, ret, double) \
983 DEFN_REL_OP_T(op, ret, const char *) \
984 DEFN_REL_OP_T(op, ret, const sc_fxval_fast &) \
985 DEFN_REL_OP_OTHER(op, ret)
986 
987 DEFN_REL_OP(<, result < 0)
988 DEFN_REL_OP(<=, result <= 0)
989 DEFN_REL_OP(>, result > 0 && result != 2)
990 DEFN_REL_OP(>=, result >= 0 && result != 2)
991 DEFN_REL_OP(==, result == 0)
992 DEFN_REL_OP(!=, result != 0)
993 
994 #undef DEFN_REL_OP_T
995 #undef DEFN_REL_OP_OTHER
996 #undef DEFN_REL_OP
997 
998 // assignment operators
999 inline sc_fxval &
1000 sc_fxval::operator = (const sc_fxval &a)
1001 {
1002  if (&a != this) {
1003  SC_FXVAL_OBSERVER_READ_(a)
1004  *m_rep = *a.m_rep;
1005  SC_FXVAL_OBSERVER_WRITE_(*this)
1006  }
1007  return *this;
1008 }
1009 
1010 #define DEFN_ASN_OP_T(tp) \
1011 inline sc_fxval & \
1012 sc_fxval::operator = (tp b) \
1013 { \
1014  sc_fxval tmp(b); \
1015  *m_rep = *tmp.m_rep; \
1016  SC_FXVAL_OBSERVER_WRITE_(*this) \
1017  return *this; \
1018 }
1019 
1020 DEFN_ASN_OP_T(int)
1021 DEFN_ASN_OP_T(unsigned int)
1022 DEFN_ASN_OP_T(long)
1023 DEFN_ASN_OP_T(unsigned long)
1024 DEFN_ASN_OP_T(float)
1025 DEFN_ASN_OP_T(double)
1026 DEFN_ASN_OP_T(const char *)
1027 DEFN_ASN_OP_T(const sc_fxval_fast &)
1028 
1029 DEFN_ASN_OP_T(int64)
1030 DEFN_ASN_OP_T(uint64)
1031 DEFN_ASN_OP_T(const sc_int_base &)
1032 DEFN_ASN_OP_T(const sc_uint_base &)
1033 DEFN_ASN_OP_T(const sc_signed &)
1034 DEFN_ASN_OP_T(const sc_unsigned &)
1035 
1036 #undef DEFN_ASN_OP_T
1037 
1038 #define DEFN_ASN_OP_T(op, fnc, tp) \
1039 inline sc_fxval & \
1040 sc_fxval::operator op (tp b) \
1041 { \
1042  SC_FXVAL_OBSERVER_READ_(*this) \
1043  sc_fxval tmp(b); \
1044  scfx_rep *new_rep = sc_dt::fnc ## _scfx_rep(*m_rep, *tmp.m_rep); \
1045  delete m_rep; \
1046  m_rep = new_rep; \
1047  SC_FXVAL_OBSERVER_WRITE_(*this) \
1048  return *this; \
1049 }
1050 
1051 #define DEFN_ASN_OP_OTHER(op, fnc) \
1052 DEFN_ASN_OP_T(op, fnc, int64) \
1053 DEFN_ASN_OP_T(op, fnc, uint64) \
1054 DEFN_ASN_OP_T(op, fnc, const sc_int_base &) \
1055 DEFN_ASN_OP_T(op, fnc, const sc_uint_base &) \
1056 DEFN_ASN_OP_T(op, fnc, const sc_signed &) \
1057 DEFN_ASN_OP_T(op, fnc, const sc_unsigned &)
1058 
1059 #define DEFN_ASN_OP(op, fnc) \
1060 inline sc_fxval & \
1061 sc_fxval::operator op (const sc_fxval &b) \
1062 { \
1063  SC_FXVAL_OBSERVER_READ_(*this) \
1064  SC_FXVAL_OBSERVER_READ_(b) \
1065  scfx_rep *new_rep = sc_dt::fnc ## _scfx_rep(*m_rep, *b.m_rep); \
1066  delete m_rep; \
1067  m_rep = new_rep; \
1068  SC_FXVAL_OBSERVER_WRITE_(*this) \
1069  return *this; \
1070 } \
1071  \
1072 DEFN_ASN_OP_T(op, fnc, int) \
1073 DEFN_ASN_OP_T(op, fnc, unsigned int) \
1074 DEFN_ASN_OP_T(op, fnc, long) \
1075 DEFN_ASN_OP_T(op, fnc, unsigned long) \
1076 DEFN_ASN_OP_T(op, fnc, float) \
1077 DEFN_ASN_OP_T(op, fnc, double) \
1078 DEFN_ASN_OP_T(op, fnc, const char *) \
1079 DEFN_ASN_OP_T(op, fnc, const sc_fxval_fast &) \
1080 DEFN_ASN_OP_OTHER(op, fnc)
1081 
1082 DEFN_ASN_OP(*=, mult)
1083 DEFN_ASN_OP(/=, div)
1084 DEFN_ASN_OP(+=, add)
1085 DEFN_ASN_OP(-=, sub)
1086 
1087 #undef DEFN_ASN_OP_T
1088 #undef DEFN_ASN_OP_OTHER
1089 #undef DEFN_ASN_OP
1090 
1091 inline sc_fxval &
1092 sc_fxval::operator <<= (int b)
1093 {
1094  SC_FXVAL_OBSERVER_READ_(*this)
1095  m_rep->lshift(b);
1096  SC_FXVAL_OBSERVER_WRITE_(*this)
1097  return *this;
1098 }
1099 
1100 inline sc_fxval &
1101 sc_fxval::operator >>= (int b)
1102 {
1103  SC_FXVAL_OBSERVER_READ_(*this)
1104  m_rep->rshift(b);
1105  SC_FXVAL_OBSERVER_WRITE_(*this)
1106  return *this;
1107 }
1108 
1109 // auto-increment and auto-decrement
1110 inline const sc_fxval
1111 sc_fxval::operator ++ (int)
1112 {
1113  sc_fxval c = *this;
1114  (*this) += 1;
1115  return c;
1116 }
1117 
1118 inline const sc_fxval
1119 sc_fxval::operator -- (int)
1120 {
1121  sc_fxval c = *this;
1122  (*this) -= 1;
1123  return c;
1124 }
1125 
1126 inline sc_fxval &
1127 sc_fxval::operator ++ ()
1128 {
1129  (*this) += 1;
1130  return *this;
1131 }
1132 
1133 inline sc_fxval &
1134 sc_fxval::operator -- ()
1135 {
1136  (*this) -= 1;
1137  return *this;
1138 }
1139 
1140 // implicit conversion
1141 inline sc_fxval::operator double() const
1142 {
1143  SC_FXVAL_OBSERVER_READ_(*this)
1144  return m_rep->to_double();
1145 }
1146 
1147 // explicit conversion to primitive types
1148 inline short
1149 sc_fxval::to_short() const
1150 {
1151  SC_FXVAL_OBSERVER_READ_(*this)
1152  return static_cast<short>(m_rep->to_uint64());
1153 }
1154 
1155 inline unsigned short
1156 sc_fxval::to_ushort() const
1157 {
1158  SC_FXVAL_OBSERVER_READ_(*this)
1159  return static_cast<unsigned short>(m_rep->to_uint64());
1160 }
1161 
1162 inline int
1163 sc_fxval::to_int() const
1164 {
1165  SC_FXVAL_OBSERVER_READ_(*this)
1166  return static_cast<int>(m_rep->to_uint64());
1167 }
1168 
1169 inline int64
1170 sc_fxval::to_int64() const
1171 {
1172  SC_FXVAL_OBSERVER_READ_(*this)
1173  return static_cast<int64>(m_rep->to_uint64());
1174 }
1175 
1176 inline unsigned int
1177 sc_fxval::to_uint() const
1178 {
1179  SC_FXVAL_OBSERVER_READ_(*this)
1180  return static_cast<unsigned int>(m_rep->to_uint64());
1181 }
1182 
1183 inline uint64
1184 sc_fxval::to_uint64() const
1185 {
1186  SC_FXVAL_OBSERVER_READ_(*this)
1187  return m_rep->to_uint64();
1188 }
1189 
1190 inline long
1191 sc_fxval::to_long() const
1192 {
1193  SC_FXVAL_OBSERVER_READ_(*this)
1194  return static_cast<long>(m_rep->to_uint64());
1195 }
1196 
1197 inline unsigned long
1198 sc_fxval::to_ulong() const
1199 {
1200  SC_FXVAL_OBSERVER_READ_(*this)
1201  return static_cast<unsigned long>(m_rep->to_uint64());
1202 }
1203 
1204 inline float
1205 sc_fxval::to_float() const
1206 {
1207  SC_FXVAL_OBSERVER_READ_(*this)
1208  return static_cast<float>(m_rep->to_double());
1209 }
1210 
1211 inline double
1212 sc_fxval::to_double() const
1213 {
1214  SC_FXVAL_OBSERVER_READ_(*this)
1215  return m_rep->to_double();
1216 }
1217 
1218 // query value
1219 inline bool
1220 sc_fxval::is_neg() const
1221 {
1222  SC_FXVAL_OBSERVER_READ_(*this)
1223  return m_rep->is_neg();
1224 }
1225 
1226 inline bool
1227 sc_fxval::is_zero() const
1228 {
1229  SC_FXVAL_OBSERVER_READ_(*this)
1230  return m_rep->is_zero();
1231 }
1232 
1233 inline bool
1234 sc_fxval::is_nan() const
1235 {
1236  SC_FXVAL_OBSERVER_READ_(*this)
1237  return m_rep->is_nan();
1238 }
1239 
1240 inline bool
1241 sc_fxval::is_inf() const
1242 {
1243  SC_FXVAL_OBSERVER_READ_(*this)
1244  return m_rep->is_inf();
1245 }
1246 
1247 inline bool
1248 sc_fxval::is_normal() const
1249 {
1250  SC_FXVAL_OBSERVER_READ_(*this)
1251  return m_rep->is_normal();
1252 }
1253 
1254 inline bool
1255 sc_fxval::rounding_flag() const
1256 {
1257  return m_rep->rounding_flag();
1258 }
1259 
1260 // internal use only;
1261 inline bool
1262 sc_fxval::get_bit(int i) const
1263 {
1264  return m_rep->get_bit(i);
1265 }
1266 
1267 // protected methods and friend functions
1268 inline void
1269 sc_fxval::get_type(int &wl, int &iwl, sc_enc &enc) const
1270 {
1271  m_rep->get_type(wl, iwl, enc);
1272 }
1273 
1274 inline const sc_fxval
1275 sc_fxval::quantization(const scfx_params &params, bool &q_flag) const
1276 {
1277  return sc_fxval(sc_dt::quantization_scfx_rep(*m_rep, params, q_flag));
1278 }
1279 
1280 inline const sc_fxval
1281 sc_fxval::overflow(const scfx_params &params, bool &o_flag) const
1282 {
1283  return sc_fxval(sc_dt::overflow_scfx_rep(*m_rep, params, o_flag));
1284 }
1285 
1286 inline ::std::ostream &
1287 operator << (::std::ostream &os, const sc_fxval &a)
1288 {
1289  a.print(os);
1290  return os;
1291 }
1292 
1293 inline ::std::istream &
1294 operator >> (::std::istream &is, sc_fxval &a)
1295 {
1296  a.scan(is);
1297  return is;
1298 }
1299 
1300 
1301 // ----------------------------------------------------------------------------
1302 // CLASS : sc_fxval_fast
1303 //
1304 // Fixed-point value type; limited precision.
1305 // ----------------------------------------------------------------------------
1306 
1307 // protected method
1308 inline sc_fxval_fast_observer *
1309 sc_fxval_fast::observer() const
1310 {
1311  return m_observer;
1312 }
1313 
1314 
1315 // public constructors
1316 inline sc_fxval_fast::sc_fxval_fast(sc_fxval_fast_observer *observer_) :
1317  m_val(0.0), m_observer(observer_)
1318 {
1319  SC_FXVAL_FAST_OBSERVER_DEFAULT_
1320  SC_FXVAL_FAST_OBSERVER_CONSTRUCT_(*this)
1321 }
1322 
1323 inline sc_fxval_fast::sc_fxval_fast(const sc_fxval_fast &a,
1324  sc_fxval_fast_observer *observer_) :
1325  m_val(a.m_val), m_observer(observer_)
1326 {
1327  SC_FXVAL_FAST_OBSERVER_DEFAULT_
1328  SC_FXVAL_FAST_OBSERVER_READ_(a)
1329  SC_FXVAL_FAST_OBSERVER_CONSTRUCT_(*this)
1330  SC_FXVAL_FAST_OBSERVER_WRITE_(*this)
1331 }
1332 
1333 #define DEFN_CTOR_T(tp, arg) \
1334 inline sc_fxval_fast::sc_fxval_fast( \
1335  tp a, sc_fxval_fast_observer * observer_) : \
1336  m_val(arg), m_observer(observer_) \
1337 { \
1338  SC_FXVAL_FAST_OBSERVER_DEFAULT_ \
1339  SC_FXVAL_FAST_OBSERVER_CONSTRUCT_(*this) \
1340  SC_FXVAL_FAST_OBSERVER_WRITE_(*this) \
1341 }
1342 
1343 #define DEFN_CTOR_T_A(tp) DEFN_CTOR_T(tp, static_cast<double>(a))
1344 #define DEFN_CTOR_T_B(tp) DEFN_CTOR_T(tp, from_string(a))
1345 #define DEFN_CTOR_T_C(tp) DEFN_CTOR_T(tp, a.to_double())
1346 
1347 DEFN_CTOR_T_A(int)
1348 DEFN_CTOR_T_A(unsigned int)
1349 DEFN_CTOR_T_A(long)
1350 DEFN_CTOR_T_A(unsigned long)
1351 DEFN_CTOR_T_A(float)
1352 DEFN_CTOR_T_A(double)
1353 DEFN_CTOR_T_B(const char *)
1354 DEFN_CTOR_T_C(const sc_fxval &)
1355 
1356 DEFN_CTOR_T_A(int64)
1357 DEFN_CTOR_T_A(uint64)
1358 DEFN_CTOR_T_C(const sc_int_base &)
1359 DEFN_CTOR_T_C(const sc_uint_base &)
1360 DEFN_CTOR_T_C(const sc_signed &)
1361 DEFN_CTOR_T_C(const sc_unsigned &)
1362 
1363 #undef DEFN_CTOR_T
1364 #undef DEFN_CTOR_T_A
1365 #undef DEFN_CTOR_T_B
1366 #undef DEFN_CTOR_T_C
1367 #undef DEFN_CTOR_T_D
1368 #undef DEFN_CTOR_T_E
1369 
1370 inline sc_fxval_fast::~sc_fxval_fast()
1371 {
1372  SC_FXVAL_FAST_OBSERVER_DESTRUCT_(*this)
1373 }
1374 
1375 // internal use only;
1376 inline double
1377 sc_fxval_fast::get_val() const
1378 {
1379  SC_FXVAL_FAST_OBSERVER_READ_(*this)
1380  return m_val;
1381 }
1382 
1383 // internal use only;
1384 inline void
1385 sc_fxval_fast::set_val(double val_)
1386 {
1387  m_val = val_;
1388  SC_FXVAL_FAST_OBSERVER_WRITE_(*this)
1389 }
1390 
1391 // unary operators
1392 inline const sc_fxval_fast
1393 sc_fxval_fast::operator - () const
1394 {
1395  SC_FXVAL_FAST_OBSERVER_READ_(*this)
1396  return sc_fxval_fast(-m_val);
1397 }
1398 
1399 inline const sc_fxval_fast &
1400 sc_fxval_fast::operator + () const
1401 {
1402  // SC_FXVAL_FAST_OBSERVER_READ_(*this)
1403  return *this;
1404 }
1405 
1406 // unary functions
1407 inline void
1408 neg(sc_fxval_fast &c, const sc_fxval_fast &a)
1409 {
1410  SC_FXVAL_FAST_OBSERVER_READ_(a)
1411  c.m_val = - a.m_val;
1412  SC_FXVAL_FAST_OBSERVER_WRITE_(c)
1413 }
1414 
1415 // binary operators
1416 #define DEFN_BIN_OP_T(op, tp) \
1417 inline const sc_fxval_fast \
1418 operator op (const sc_fxval_fast &a, tp b) \
1419 { \
1420  SC_FXVAL_FAST_OBSERVER_READ_(a) \
1421  sc_fxval_fast tmp(b); \
1422  return sc_fxval_fast(a.m_val op tmp.m_val); \
1423 } \
1424  \
1425 inline const sc_fxval_fast \
1426 operator op (tp a, const sc_fxval_fast &b) \
1427 { \
1428  SC_FXVAL_FAST_OBSERVER_READ_(b) \
1429  sc_fxval_fast tmp(a); \
1430  return sc_fxval_fast(tmp.m_val op b.m_val); \
1431 }
1432 
1433 #define DEFN_BIN_OP_OTHER(op) \
1434 DEFN_BIN_OP_T(op, int64) \
1435 DEFN_BIN_OP_T(op, uint64) \
1436 DEFN_BIN_OP_T(op, const sc_int_base &) \
1437 DEFN_BIN_OP_T(op, const sc_uint_base &) \
1438 DEFN_BIN_OP_T(op, const sc_signed &) \
1439 DEFN_BIN_OP_T(op, const sc_unsigned &)
1440 
1441 #define DEFN_BIN_OP(op, dummy) \
1442 inline const sc_fxval_fast \
1443 operator op (const sc_fxval_fast &a, const sc_fxval_fast &b) \
1444 { \
1445  SC_FXVAL_FAST_OBSERVER_READ_(a) \
1446  SC_FXVAL_FAST_OBSERVER_READ_(b) \
1447  return sc_fxval_fast(a.m_val op b.m_val); \
1448 } \
1449  \
1450 DEFN_BIN_OP_T(op, int) \
1451 DEFN_BIN_OP_T(op, unsigned int) \
1452 DEFN_BIN_OP_T(op, long) \
1453 DEFN_BIN_OP_T(op, unsigned long) \
1454 DEFN_BIN_OP_T(op, float) \
1455 DEFN_BIN_OP_T(op, double) \
1456 DEFN_BIN_OP_T(op, const char *) \
1457 DEFN_BIN_OP_OTHER(op)
1458 
1459 DEFN_BIN_OP(*, mult)
1460 DEFN_BIN_OP(+, add)
1461 DEFN_BIN_OP(-, sub)
1462 //DEFN_BIN_OP(/, div)
1463 inline const sc_fxval_fast
1464 operator / (const sc_fxval_fast &a, const sc_fxval_fast &b)
1465 {
1466  SC_FXVAL_FAST_OBSERVER_READ_(a)
1467  SC_FXVAL_FAST_OBSERVER_READ_(b)
1468  return sc_fxval_fast(a.m_val / b.m_val);
1469 }
1470 
1471 DEFN_BIN_OP_T(/, int)
1472 DEFN_BIN_OP_T(/, unsigned int)
1473 DEFN_BIN_OP_T(/, long)
1474 DEFN_BIN_OP_T(/, unsigned long)
1475 DEFN_BIN_OP_T(/, float)
1476 DEFN_BIN_OP_T(/, double)
1477 DEFN_BIN_OP_T(/, const char *)
1478 //DEFN_BIN_OP_OTHER(/)
1479 
1480 DEFN_BIN_OP_T(/, int64)
1481 DEFN_BIN_OP_T(/, uint64)
1482 DEFN_BIN_OP_T(/, const sc_int_base &)
1483 DEFN_BIN_OP_T(/, const sc_uint_base &)
1484 DEFN_BIN_OP_T(/, const sc_signed &)
1485 DEFN_BIN_OP_T(/, const sc_unsigned &)
1486 
1487 
1488 #undef DEFN_BIN_OP_T
1489 #undef DEFN_BIN_OP_OTHER
1490 #undef DEFN_BIN_OP
1491 
1492 
1493 inline const sc_fxval_fast
1494 operator << (const sc_fxval_fast &a, int b)
1495 {
1496  SC_FXVAL_FAST_OBSERVER_READ_(a)
1497  return sc_fxval_fast(a.m_val * scfx_pow2(b));
1498 }
1499 
1500 inline const sc_fxval_fast
1501 operator >> (const sc_fxval_fast &a, int b)
1502 {
1503  SC_FXVAL_FAST_OBSERVER_READ_(a)
1504  return sc_fxval_fast(a.m_val * scfx_pow2(-b));
1505 }
1506 
1507 // binary functions
1508 #define DEFN_BIN_FNC_T(fnc, op, tp) \
1509 inline void \
1510 fnc (sc_fxval_fast &c, const sc_fxval_fast &a, tp b) \
1511 { \
1512  SC_FXVAL_FAST_OBSERVER_READ_(a) \
1513  sc_fxval_fast tmp(b); \
1514  c.m_val = a.m_val op tmp.m_val; \
1515  SC_FXVAL_FAST_OBSERVER_WRITE_(c) \
1516 } \
1517  \
1518 inline void \
1519 fnc (sc_fxval_fast &c, tp a, const sc_fxval_fast &b) \
1520 { \
1521  SC_FXVAL_FAST_OBSERVER_READ_(b) \
1522  sc_fxval_fast tmp(a); \
1523  c.m_val = tmp.m_val op b.m_val; \
1524  SC_FXVAL_FAST_OBSERVER_WRITE_(c) \
1525 }
1526 
1527 #define DEFN_BIN_FNC_OTHER(fnc, op) \
1528 DEFN_BIN_FNC_T(fnc, op, int64) \
1529 DEFN_BIN_FNC_T(fnc, op, uint64) \
1530 DEFN_BIN_FNC_T(fnc, op, const sc_int_base &) \
1531 DEFN_BIN_FNC_T(fnc, op, const sc_uint_base &) \
1532 DEFN_BIN_FNC_T(fnc, op, const sc_signed &) \
1533 DEFN_BIN_FNC_T(fnc, op, const sc_unsigned &)
1534 
1535 #define DEFN_BIN_FNC(fnc, op) \
1536 inline void \
1537 fnc (sc_fxval_fast &c, const sc_fxval_fast &a, const sc_fxval_fast &b) \
1538 { \
1539  SC_FXVAL_FAST_OBSERVER_READ_(a) \
1540  SC_FXVAL_FAST_OBSERVER_READ_(b) \
1541  c.m_val = a.m_val op b.m_val; \
1542  SC_FXVAL_FAST_OBSERVER_WRITE_(c) \
1543 } \
1544  \
1545 DEFN_BIN_FNC_T(fnc, op, int) \
1546 DEFN_BIN_FNC_T(fnc, op, unsigned int) \
1547 DEFN_BIN_FNC_T(fnc, op, long) \
1548 DEFN_BIN_FNC_T(fnc, op, unsigned long) \
1549 DEFN_BIN_FNC_T(fnc, op, float) \
1550 DEFN_BIN_FNC_T(fnc, op, double) \
1551 DEFN_BIN_FNC_T(fnc, op, const char *) \
1552 DEFN_BIN_FNC_OTHER(fnc, op)
1553 
1554 DEFN_BIN_FNC(mult, *)
1555 DEFN_BIN_FNC(div, /)
1556 DEFN_BIN_FNC(add, +)
1557 DEFN_BIN_FNC(sub, -)
1558 
1559 #undef DEFN_BIN_FNC_T
1560 #undef DEFN_BIN_FNC_OTHER
1561 #undef DEFN_BIN_FNC
1562 
1563 inline void
1564 lshift(sc_fxval_fast &c, const sc_fxval_fast &a, int b)
1565 {
1566  SC_FXVAL_FAST_OBSERVER_READ_(a)
1567  c.m_val = a.m_val * scfx_pow2(b);
1568  SC_FXVAL_FAST_OBSERVER_WRITE_(c)
1569 }
1570 
1571 inline void
1572 rshift(sc_fxval_fast &c, const sc_fxval_fast &a, int b)
1573 {
1574  SC_FXVAL_FAST_OBSERVER_READ_(a)
1575  c.m_val = a.m_val * scfx_pow2(-b);
1576  SC_FXVAL_FAST_OBSERVER_WRITE_(c)
1577 }
1578 
1579 // relational (including equality) operators
1580 #define DEFN_REL_OP_T(op, tp) \
1581 inline bool \
1582 operator op (const sc_fxval_fast &a, tp b) \
1583 { \
1584  SC_FXVAL_FAST_OBSERVER_READ_(a) \
1585  sc_fxval_fast tmp(b); \
1586  return (a.m_val op tmp.m_val); \
1587 } \
1588  \
1589 inline bool \
1590 operator op (tp a, const sc_fxval_fast &b) \
1591 { \
1592  SC_FXVAL_FAST_OBSERVER_READ_(b) \
1593  sc_fxval_fast tmp(a); \
1594  return (tmp.m_val op b.m_val); \
1595 }
1596 
1597 #define DEFN_REL_OP_OTHER(op) \
1598 DEFN_REL_OP_T(op, int64) \
1599 DEFN_REL_OP_T(op, uint64) \
1600 DEFN_REL_OP_T(op, const sc_int_base &) \
1601 DEFN_REL_OP_T(op, const sc_uint_base &) \
1602 DEFN_REL_OP_T(op, const sc_signed &) \
1603 DEFN_REL_OP_T(op, const sc_unsigned &)
1604 
1605 #define DEFN_REL_OP(op) \
1606 inline bool \
1607 operator op (const sc_fxval_fast &a, const sc_fxval_fast &b) \
1608 { \
1609  SC_FXVAL_FAST_OBSERVER_READ_(a) \
1610  SC_FXVAL_FAST_OBSERVER_READ_(b) \
1611  return (a.m_val op b.m_val); \
1612 } \
1613  \
1614 DEFN_REL_OP_T(op, int) \
1615 DEFN_REL_OP_T(op, unsigned int) \
1616 DEFN_REL_OP_T(op, long) \
1617 DEFN_REL_OP_T(op, unsigned long) \
1618 DEFN_REL_OP_T(op, float) \
1619 DEFN_REL_OP_T(op, double) \
1620 DEFN_REL_OP_T(op, const char *) \
1621 DEFN_REL_OP_OTHER(op)
1622 
1623 DEFN_REL_OP(<)
1624 DEFN_REL_OP(<=)
1625 DEFN_REL_OP(>)
1626 DEFN_REL_OP(>=)
1627 DEFN_REL_OP(==)
1628 DEFN_REL_OP(!=)
1629 
1630 #undef DEFN_REL_OP_T
1631 #undef DEFN_REL_OP_OTHER
1632 #undef DEFN_REL_OP
1633 
1634 // assignment operators
1635 inline sc_fxval_fast &
1636 sc_fxval_fast::operator = (const sc_fxval_fast &a)
1637 {
1638  if (&a != this) {
1639  SC_FXVAL_FAST_OBSERVER_READ_(a)
1640  m_val = a.m_val;
1641  SC_FXVAL_FAST_OBSERVER_WRITE_(*this)
1642  }
1643  return *this;
1644 }
1645 
1646 #define DEFN_ASN_OP_T(tp) \
1647 inline sc_fxval_fast & \
1648 sc_fxval_fast::operator = (tp a) \
1649 { \
1650  sc_fxval_fast tmp(a); \
1651  m_val = tmp.m_val; \
1652  SC_FXVAL_FAST_OBSERVER_WRITE_(*this) \
1653  return *this; \
1654 }
1655 
1656 DEFN_ASN_OP_T(int)
1657 DEFN_ASN_OP_T(unsigned int)
1658 DEFN_ASN_OP_T(long)
1659 DEFN_ASN_OP_T(unsigned long)
1660 DEFN_ASN_OP_T(float)
1661 DEFN_ASN_OP_T(double)
1662 DEFN_ASN_OP_T(const char *)
1663 DEFN_ASN_OP_T(const sc_fxval &)
1664 
1665 DEFN_ASN_OP_T(int64)
1666 DEFN_ASN_OP_T(uint64)
1667 DEFN_ASN_OP_T(const sc_int_base &)
1668 DEFN_ASN_OP_T(const sc_uint_base &)
1669 DEFN_ASN_OP_T(const sc_signed &)
1670 DEFN_ASN_OP_T(const sc_unsigned &)
1671 
1672 #undef DEFN_ASN_OP_T
1673 
1674 #define DEFN_ASN_OP_T(op, tp) \
1675 inline sc_fxval_fast & \
1676 sc_fxval_fast::operator op (tp b) \
1677 { \
1678  SC_FXVAL_FAST_OBSERVER_READ_(*this) \
1679  sc_fxval_fast tmp(b); \
1680  m_val op tmp.m_val; \
1681  SC_FXVAL_FAST_OBSERVER_WRITE_(*this) \
1682  return *this; \
1683 }
1684 
1685 #define DEFN_ASN_OP_OTHER(op) \
1686 DEFN_ASN_OP_T(op, int64) \
1687 DEFN_ASN_OP_T(op, uint64) \
1688 DEFN_ASN_OP_T(op, const sc_int_base &) \
1689 DEFN_ASN_OP_T(op, const sc_uint_base &) \
1690 DEFN_ASN_OP_T(op, const sc_signed &) \
1691 DEFN_ASN_OP_T(op, const sc_unsigned &)
1692 
1693 #define DEFN_ASN_OP(op) \
1694 inline sc_fxval_fast & \
1695 sc_fxval_fast::operator op (const sc_fxval_fast &b) \
1696 { \
1697  SC_FXVAL_FAST_OBSERVER_READ_(*this) \
1698  SC_FXVAL_FAST_OBSERVER_READ_(b) \
1699  m_val op b.m_val; \
1700  SC_FXVAL_FAST_OBSERVER_WRITE_(*this) \
1701  return *this; \
1702 } \
1703  \
1704 DEFN_ASN_OP_T(op, int) \
1705 DEFN_ASN_OP_T(op, unsigned int) \
1706 DEFN_ASN_OP_T(op, long) \
1707 DEFN_ASN_OP_T(op, unsigned long) \
1708 DEFN_ASN_OP_T(op, float) \
1709 DEFN_ASN_OP_T(op, double) \
1710 DEFN_ASN_OP_T(op, const char *) \
1711 DEFN_ASN_OP_T(op, const sc_fxval &) \
1712 DEFN_ASN_OP_OTHER(op)
1713 
1714 DEFN_ASN_OP(*=)
1715 DEFN_ASN_OP(/=)
1716 DEFN_ASN_OP(+=)
1717 DEFN_ASN_OP(-=)
1718 
1719 #undef DEFN_ASN_OP_T
1720 #undef DEFN_ASN_OP_OTHER
1721 #undef DEFN_ASN_OP
1722 
1723 inline sc_fxval_fast &
1724 sc_fxval_fast::operator <<= (int b)
1725 {
1726  SC_FXVAL_FAST_OBSERVER_READ_(*this)
1727  m_val *= scfx_pow2(b);
1728  SC_FXVAL_FAST_OBSERVER_WRITE_(*this)
1729  return *this;
1730 }
1731 
1732 inline sc_fxval_fast &
1733 sc_fxval_fast::operator >>= (int b)
1734 {
1735  SC_FXVAL_FAST_OBSERVER_READ_(*this)
1736  m_val *= scfx_pow2(-b);
1737  SC_FXVAL_FAST_OBSERVER_WRITE_(*this)
1738  return *this;
1739 }
1740 
1741 // auto-increment and auto-decrement
1742 inline const sc_fxval_fast
1743 sc_fxval_fast::operator ++ (int)
1744 {
1745  SC_FXVAL_FAST_OBSERVER_READ_(*this)
1746  SC_FXVAL_FAST_OBSERVER_READ_(*this)
1747  double c = m_val;
1748  m_val = m_val + 1;
1749  SC_FXVAL_FAST_OBSERVER_WRITE_(*this)
1750  return sc_fxval_fast(c);
1751 }
1752 
1753 inline const sc_fxval_fast
1754 sc_fxval_fast::operator -- (int)
1755 {
1756  SC_FXVAL_FAST_OBSERVER_READ_(*this)
1757  SC_FXVAL_FAST_OBSERVER_READ_(*this)
1758  double c = m_val;
1759  m_val = m_val - 1;
1760  SC_FXVAL_FAST_OBSERVER_WRITE_(*this)
1761  return sc_fxval_fast(c);
1762 }
1763 
1764 inline sc_fxval_fast &
1765 sc_fxval_fast::operator ++ ()
1766 {
1767  SC_FXVAL_FAST_OBSERVER_READ_(*this)
1768  m_val = m_val + 1;
1769  SC_FXVAL_FAST_OBSERVER_WRITE_(*this)
1770  return *this;
1771 }
1772 
1773 inline sc_fxval_fast &
1774 sc_fxval_fast::operator -- ()
1775 {
1776  SC_FXVAL_FAST_OBSERVER_READ_(*this)
1777  m_val = m_val - 1;
1778  SC_FXVAL_FAST_OBSERVER_WRITE_(*this)
1779  return *this;
1780 }
1781 
1782 // implicit conversion
1783 inline sc_fxval_fast::operator double() const
1784 {
1785  SC_FXVAL_FAST_OBSERVER_READ_(*this)
1786  return m_val;
1787 }
1788 
1789 // explicit conversion to primitive types
1790 inline short
1791 sc_fxval_fast::to_short() const
1792 {
1793  // SC_FXVAL_FAST_OBSERVER_READ_ in to_uint64
1794  return static_cast<short>(to_uint64());
1795 }
1796 
1797 inline unsigned short
1798 sc_fxval_fast::to_ushort() const
1799 {
1800  // SC_FXVAL_FAST_OBSERVER_READ_ in to_uint64
1801  return static_cast<unsigned short>(to_uint64());
1802 }
1803 
1804 inline int64
1805 sc_fxval_fast::to_int64() const
1806 {
1807  // SC_FXVAL_FAST_OBSERVER_READ_ in to_uint64
1808  return static_cast<int64>(to_uint64());
1809 }
1810 
1811 inline int
1812 sc_fxval_fast::to_int() const
1813 {
1814  // SC_FXVAL_FAST_OBSERVER_READ_ in to_uint64
1815  return static_cast<int>(to_uint64());
1816 }
1817 
1818 inline unsigned int
1819 sc_fxval_fast::to_uint() const
1820 {
1821  // SC_FXVAL_FAST_OBSERVER_READ_ in to_uint64
1822  return static_cast<unsigned int>(to_uint64());
1823 }
1824 
1825 inline uint64
1826 sc_fxval_fast::to_uint64() const
1827 {
1828  // SC_FXVAL_FAST_OBSERVER_READ_ in is_normal
1829  if (!is_normal()) {
1830  return 0;
1831  }
1832 
1833  int exponent;
1834  double mantissa_dbl = frexp(m_val, &exponent);
1835 
1836  uint64 mantissa = static_cast<uint64>(
1837  fabs(mantissa_dbl) * (UINT64_ONE << 53));
1838  exponent -= 53;
1839 
1840  if (!(-64 < exponent && exponent < 64)) {
1841  return 0;
1842  }
1843 
1844  mantissa = exponent >= 0 ? mantissa << exponent : mantissa >> -exponent;
1845  return mantissa_dbl >= 0 ? mantissa : -mantissa;
1846 }
1847 
1848 inline long
1849 sc_fxval_fast::to_long() const
1850 {
1851  // SC_FXVAL_FAST_OBSERVER_READ_ in to_uint64
1852  return static_cast<long>(to_uint64());
1853 }
1854 
1855 inline unsigned long
1856 sc_fxval_fast::to_ulong() const
1857 {
1858  // SC_FXVAL_FAST_OBSERVER_READ_ in to_uint64
1859  return static_cast<unsigned long>(to_uint64());
1860 }
1861 
1862 inline float
1863 sc_fxval_fast::to_float() const
1864 {
1865  SC_FXVAL_FAST_OBSERVER_READ_(*this)
1866  return static_cast<float>(m_val);
1867 }
1868 
1869 inline double
1870 sc_fxval_fast::to_double() const
1871 {
1872  SC_FXVAL_FAST_OBSERVER_READ_(*this)
1873  return m_val;
1874 }
1875 
1876 // query value
1877 inline bool
1878 sc_fxval_fast::is_neg() const
1879 {
1880  SC_FXVAL_FAST_OBSERVER_READ_(*this)
1881  scfx_ieee_double id(m_val);
1882  return (id.negative() != 0);
1883 }
1884 
1885 inline bool
1886 sc_fxval_fast::is_zero() const
1887 {
1888  SC_FXVAL_FAST_OBSERVER_READ_(*this)
1889  scfx_ieee_double id(m_val);
1890  return id.is_zero();
1891 }
1892 
1893 inline bool
1894 sc_fxval_fast::is_nan() const
1895 {
1896  SC_FXVAL_FAST_OBSERVER_READ_(*this)
1897  scfx_ieee_double id(m_val);
1898  return id.is_nan();
1899 }
1900 
1901 inline bool
1902 sc_fxval_fast::is_inf() const
1903 {
1904  SC_FXVAL_FAST_OBSERVER_READ_(*this)
1905  scfx_ieee_double id(m_val);
1906  return id.is_inf();
1907 }
1908 
1909 inline bool
1910 sc_fxval_fast::is_normal() const
1911 {
1912  SC_FXVAL_FAST_OBSERVER_READ_(*this)
1913  scfx_ieee_double id(m_val);
1914  return (id.is_normal() || id.is_subnormal() || id.is_zero());
1915 }
1916 
1917 inline bool
1918 sc_fxval_fast::rounding_flag() const
1919 {
1920  // does not apply to sc_fxval_fast; included for API compatibility
1921  return false;
1922 }
1923 
1924 inline ::std::ostream &
1925 operator << (::std::ostream &os, const sc_fxval_fast &a)
1926 {
1927  a.print(os);
1928  return os;
1929 }
1930 
1931 inline ::std::istream &
1932 operator >> (::std::istream &is, sc_fxval_fast &a)
1933 {
1934  a.scan(is);
1935  return is;
1936 }
1937 
1938 } // namespace sc_dt
1939 
1940 #undef SCFX_EXPLICIT_
1941 #undef SCFX_EXPLICIT_OTHER_
1942 
1943 #endif // __SYSTEMC_EXT_DT_FX_SC_FXVAL_HH__
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unsigned int to_uint() const
Definition: sc_fxval.hh:1819
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Definition: sc_fxval.hh:1205
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Definition: sc_fxval.hh:659
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#define DECL_ASN_OP_T(op, tp)
Definition: sc_fxval.hh:547
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~sc_fxval()
Definition: sc_fxval.hh:719
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bool is_neg() const
Definition: sc_fxval.hh:1220
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Definition: sc_unsigned.hh:890
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const friend sc_fxval operator<<(const sc_fxval &, int)
Definition: sc_fxval.hh:848
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bool is_inf() const
Definition: scfx_rep.hh:422
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Definition: sc_fxval.hh:1693
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sc_fxval_fast_observer * m_observer
Definition: sc_fxval.hh:645
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void set_rep(scfx_rep *)
Definition: sc_fxval.hh:735
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~sc_fxval_fast()
Definition: sc_fxval.hh:1370
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Bitfield< 29 > c
Definition: miscregs_types.hh:50
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const std::string to_string() const
Definition: sc_fxval.cc:99
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#define DEFN_CTOR_T_C(tp)
Definition: sc_fxval.hh:1345
scfx_rep.hh
sc_dt::sc_fxval_fast::dump
void dump(::std::ostream &=::std::cout) const
Definition: sc_fxval.cc:582
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bool is_normal() const
Definition: scfx_rep.hh:424
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Definition: scfx_ieee.hh:146
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scfx_rep * lsh_scfx_rep(const scfx_rep &, int)
Definition: scfx_rep.hh:387
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scfx_rep * overflow_scfx_rep(const scfx_rep &a, const scfx_params &params, bool &o_flag)
Definition: scfx_rep.hh:436
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friend void lshift(sc_fxval_fast &, const sc_fxval_fast &, int)
Definition: sc_fxval.hh:1564
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Definition: sc_fxval.cc:165
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Definition: sc_fxval.hh:1605
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bool rounding_flag() const
Definition: scfx_rep.hh:443
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#define SC_FXVAL_OBSERVER_CONSTRUCT_(object)
Definition: sc_fxval_observer.hh:120
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#define DECL_BIN_OP_T(op, tp)
Definition: sc_fxval.hh:418
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scfx_rep * rsh_scfx_rep(const scfx_rep &, int)
Definition: scfx_rep.hh:395
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friend void neg(sc_fxval_fast &, const sc_fxval_fast &)
Definition: sc_fxval.hh:1408
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Definition: scfx_rep.cc:2570
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uint64 to_uint64() const
Definition: sc_fxval.hh:1184
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sc_fxval_fast(sc_fxval_fast_observer *=0)
Definition: sc_fxval.hh:1316
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bool is_zero() const
Definition: sc_fxval.hh:1227
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bool is_nan() const
Definition: sc_fxval.hh:1234
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double to_double() const
Definition: sc_fxval.hh:1870
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Bitfield< 33 > id
Definition: miscregs_types.hh:247
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Definition: sc_fxval.hh:1127
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