SystemC  2.3.1
Accellera SystemC proof-of-concept library
sc_fxval.h
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18 /*****************************************************************************
19 
20  sc_fxval.h -
21 
22  Original Author: Martin Janssen, Synopsys, Inc.
23 
24  *****************************************************************************/
25 
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27 
28  MODIFICATION LOG - modifiers, enter your name, affiliation, date and
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31  Name, Affiliation, Date:
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35 
36 // $Log: sc_fxval.h,v $
37 // Revision 1.3 2011/01/19 18:57:40 acg
38 // Andy Goodrich: changes for IEEE_1666_2011.
39 //
40 // Revision 1.2 2010/12/07 20:09:08 acg
41 // Andy Goodrich: Philipp Hartmann's constructor disambiguation fix
42 //
43 // Revision 1.1.1.1 2006/12/15 20:20:04 acg
44 // SystemC 2.3
45 //
46 // Revision 1.3 2006/01/13 18:53:58 acg
47 // Andy Goodrich: added $Log command so that CVS comments are reproduced in
48 // the source.
49 //
50 
51 #ifndef SC_FXVAL_H
52 #define SC_FXVAL_H
53 
54 
55 #include "sysc/datatypes/fx/scfx_rep.h"
56 #ifndef SC_FX_EXCLUDE_OTHER
57 #include "sysc/datatypes/int/sc_int_base.h"
58 #include "sysc/datatypes/int/sc_uint_base.h"
59 #include "sysc/datatypes/int/sc_signed.h"
60 #include "sysc/datatypes/int/sc_unsigned.h"
61 #endif
62 #include "sysc/datatypes/fx/sc_fxval_observer.h"
63 
64 #ifdef SC_FXVAL_IMPLICIT_CONV
65 # define SCFX_EXPLICIT_ // nothing
66 #else
67 # define SCFX_EXPLICIT_ explicit
68 #endif
69 #ifdef SC_FXVAL_IMPLICIT_OTHER
70 # define SCFX_EXPLICIT_OTHER_
71 #else
72 # define SCFX_EXPLICIT_OTHER_ explicit
73 #endif
74 
75 namespace sc_dt
76 {
77 
78 // classes defined in this module
79 class sc_fxval;
80 class sc_fxval_fast;
81 
82 // forward class declarations
83 class sc_fxnum;
84 class sc_fxnum_fast;
85 
86 
87 // ----------------------------------------------------------------------------
88 // CLASS : sc_fxval
89 //
90 // Fixed-point value type; arbitrary precision.
91 // ----------------------------------------------------------------------------
92 
93 class sc_fxval
94 {
95 
96  friend class sc_fxnum;
97 
98 protected:
99 
100  sc_fxval_observer* observer() const;
101 
102 public:
103 
104  // internal use only;
105  explicit sc_fxval( scfx_rep* );
106 
107 
108  explicit sc_fxval( sc_fxval_observer* = 0 );
109  SCFX_EXPLICIT_ sc_fxval( int, sc_fxval_observer* = 0 );
110  SCFX_EXPLICIT_ sc_fxval( unsigned int, sc_fxval_observer* = 0 );
111  SCFX_EXPLICIT_ sc_fxval( long, sc_fxval_observer* = 0 );
112  SCFX_EXPLICIT_ sc_fxval( unsigned long, sc_fxval_observer* = 0 );
113  SCFX_EXPLICIT_ sc_fxval( float, sc_fxval_observer* = 0 );
114  SCFX_EXPLICIT_ sc_fxval( double, sc_fxval_observer* = 0 );
115  SCFX_EXPLICIT_ sc_fxval( const char*, sc_fxval_observer* = 0 );
116  sc_fxval( const sc_fxval&, sc_fxval_observer* = 0 );
117  sc_fxval( const sc_fxval_fast&, sc_fxval_observer* = 0 );
118  sc_fxval( const sc_fxnum&, sc_fxval_observer* = 0 );
119  sc_fxval( const sc_fxnum_fast&, sc_fxval_observer* = 0 );
120 #ifndef SC_FX_EXCLUDE_OTHER
121  SCFX_EXPLICIT_OTHER_ sc_fxval( int64, sc_fxval_observer* = 0 );
122  SCFX_EXPLICIT_OTHER_ sc_fxval( uint64, sc_fxval_observer* = 0 );
123  SCFX_EXPLICIT_OTHER_ sc_fxval( const sc_int_base&, sc_fxval_observer* = 0 );
124  SCFX_EXPLICIT_OTHER_ sc_fxval( const sc_uint_base&, sc_fxval_observer* = 0 );
125  SCFX_EXPLICIT_OTHER_ sc_fxval( const sc_signed&, sc_fxval_observer* = 0 );
126  SCFX_EXPLICIT_OTHER_ sc_fxval( const sc_unsigned&, sc_fxval_observer* = 0 );
127 #endif
128 
129  ~sc_fxval();
130 
131 
132  // internal use only;
133  const scfx_rep* get_rep() const;
134  void set_rep( scfx_rep* );
135 
136 
137  // unary operators
138 
139  const sc_fxval operator - () const;
140  const sc_fxval& operator + () const;
141 
142 
143  // unary functions
144 
145  friend void neg( sc_fxval&, const sc_fxval& );
146 
147 
148  // binary operators
149 
150 #define DECL_BIN_OP_T(op,tp) \
151  friend const sc_fxval operator op ( const sc_fxval&, tp ); \
152  friend const sc_fxval operator op ( tp, const sc_fxval& );
153 
154 #ifndef SC_FX_EXCLUDE_OTHER
155 #define DECL_BIN_OP_OTHER(op) \
156  DECL_BIN_OP_T(op,int64) \
157  DECL_BIN_OP_T(op,uint64) \
158  DECL_BIN_OP_T(op,const sc_int_base&) \
159  DECL_BIN_OP_T(op,const sc_uint_base&) \
160  DECL_BIN_OP_T(op,const sc_signed&) \
161  DECL_BIN_OP_T(op,const sc_unsigned&)
162 #else
163 #define DECL_BIN_OP_OTHER(op)
164 #endif
165 
166 #define DECL_BIN_OP(op,dummy) \
167  friend const sc_fxval operator op ( const sc_fxval&, const sc_fxval& ); \
168  DECL_BIN_OP_T(op,int) \
169  DECL_BIN_OP_T(op,unsigned int) \
170  DECL_BIN_OP_T(op,long) \
171  DECL_BIN_OP_T(op,unsigned long) \
172  DECL_BIN_OP_T(op,float) \
173  DECL_BIN_OP_T(op,double) \
174  DECL_BIN_OP_T(op,const char*) \
175  DECL_BIN_OP_T(op,const sc_fxval_fast&) \
176  DECL_BIN_OP_T(op,const sc_fxnum_fast&) \
177  DECL_BIN_OP_OTHER(op)
178 
179  DECL_BIN_OP(*,mult)
180  DECL_BIN_OP(+,add)
181  DECL_BIN_OP(-,sub)
182 // declaration below doesn't compile with BCB5 (E2206)
183 // DECL_BIN_OP(/,div)
184 // previous macro expanded
185  friend const sc_fxval operator / ( const sc_fxval&, const sc_fxval& );
186  DECL_BIN_OP_T(/,int)
187  DECL_BIN_OP_T(/,unsigned int)
188  DECL_BIN_OP_T(/,long)
189  DECL_BIN_OP_T(/,unsigned long)
190  DECL_BIN_OP_T(/,float)
191  DECL_BIN_OP_T(/,double)
192  DECL_BIN_OP_T(/,const char*)
193  DECL_BIN_OP_T(/,const sc_fxval_fast&)
194  DECL_BIN_OP_T(/,const sc_fxnum_fast&)
195 // DECL_BIN_OP_OTHER(/)
196 #ifndef SC_FX_EXCLUDE_OTHER
197  DECL_BIN_OP_T(/,int64) \
198  DECL_BIN_OP_T(/,uint64) \
199  DECL_BIN_OP_T(/,const sc_int_base&) \
200  DECL_BIN_OP_T(/,const sc_uint_base&) \
201  DECL_BIN_OP_T(/,const sc_signed&) \
202  DECL_BIN_OP_T(/,const sc_unsigned&)
203 #endif
204 
205 
206 #undef DECL_BIN_OP_T
207 #undef DECL_BIN_OP_OTHER
208 #undef DECL_BIN_OP
209 
210  friend const sc_fxval operator << ( const sc_fxval&, int );
211  friend const sc_fxval operator >> ( const sc_fxval&, int );
212 
213 
214  // binary functions
215 
216 #define DECL_BIN_FNC_T(fnc,tp) \
217  friend void fnc ( sc_fxval&, const sc_fxval&, tp ); \
218  friend void fnc ( sc_fxval&, tp, const sc_fxval& );
219 
220 #ifndef SC_FX_EXCLUDE_OTHER
221 #define DECL_BIN_FNC_OTHER(fnc) \
222  DECL_BIN_FNC_T(fnc,int64) \
223  DECL_BIN_FNC_T(fnc,uint64) \
224  DECL_BIN_FNC_T(fnc,const sc_int_base&) \
225  DECL_BIN_FNC_T(fnc,const sc_uint_base&) \
226  DECL_BIN_FNC_T(fnc,const sc_signed&) \
227  DECL_BIN_FNC_T(fnc,const sc_unsigned&)
228 #else
229 #define DECL_BIN_FNC_OTHER(fnc)
230 #endif
231 
232 #define DECL_BIN_FNC(fnc) \
233  friend void fnc ( sc_fxval&, const sc_fxval&, const sc_fxval& ); \
234  DECL_BIN_FNC_T(fnc,int) \
235  DECL_BIN_FNC_T(fnc,unsigned int) \
236  DECL_BIN_FNC_T(fnc,long) \
237  DECL_BIN_FNC_T(fnc,unsigned long) \
238  DECL_BIN_FNC_T(fnc,float) \
239  DECL_BIN_FNC_T(fnc,double) \
240  DECL_BIN_FNC_T(fnc,const char*) \
241  DECL_BIN_FNC_T(fnc,const sc_fxval_fast&) \
242  DECL_BIN_FNC_T(fnc,const sc_fxnum_fast&) \
243  DECL_BIN_FNC_OTHER(fnc)
244 
245  DECL_BIN_FNC(mult)
246  DECL_BIN_FNC(div)
247  DECL_BIN_FNC(add)
248  DECL_BIN_FNC(sub)
249 
250 #undef DECL_BIN_FNC_T
251 #undef DECL_BIN_FNC_OTHER
252 #undef DECL_BIN_FNC
253 
254  friend void lshift( sc_fxval&, const sc_fxval&, int );
255  friend void rshift( sc_fxval&, const sc_fxval&, int );
256 
257 
258  // relational (including equality) operators
259 
260 #define DECL_REL_OP_T(op,tp) \
261  friend bool operator op ( const sc_fxval&, tp ); \
262  friend bool operator op ( tp, const sc_fxval& );
263 
264 #ifndef SC_FX_EXCLUDE_OTHER
265 #define DECL_REL_OP_OTHER(op) \
266  DECL_REL_OP_T(op,int64) \
267  DECL_REL_OP_T(op,uint64) \
268  DECL_REL_OP_T(op,const sc_int_base&) \
269  DECL_REL_OP_T(op,const sc_uint_base&) \
270  DECL_REL_OP_T(op,const sc_signed&) \
271  DECL_REL_OP_T(op,const sc_unsigned&)
272 #else
273 #define DECL_REL_OP_OTHER(op)
274 #endif
275 
276 #define DECL_REL_OP(op) \
277  friend bool operator op ( const sc_fxval&, const sc_fxval& ); \
278  DECL_REL_OP_T(op,int) \
279  DECL_REL_OP_T(op,unsigned int) \
280  DECL_REL_OP_T(op,long) \
281  DECL_REL_OP_T(op,unsigned long) \
282  DECL_REL_OP_T(op,float) \
283  DECL_REL_OP_T(op,double) \
284  DECL_REL_OP_T(op,const char*) \
285  DECL_REL_OP_T(op,const sc_fxval_fast&) \
286  DECL_REL_OP_T(op,const sc_fxnum_fast&) \
287  DECL_REL_OP_OTHER(op)
288 
289  DECL_REL_OP(<)
290  DECL_REL_OP(<=)
291  DECL_REL_OP(>)
292  DECL_REL_OP(>=)
293  DECL_REL_OP(==)
294  DECL_REL_OP(!=)
295 
296 #undef DECL_REL_OP_T
297 #undef DECL_REL_OP_OTHER
298 #undef DECL_REL_OP
299 
300 
301  // assignment operators
302 
303 #define DECL_ASN_OP_T(op,tp) \
304  sc_fxval& operator op( tp );
305 
306 #ifndef SC_FX_EXCLUDE_OTHER
307 #define DECL_ASN_OP_OTHER(op) \
308  DECL_ASN_OP_T(op,int64) \
309  DECL_ASN_OP_T(op,uint64) \
310  DECL_ASN_OP_T(op,const sc_int_base&) \
311  DECL_ASN_OP_T(op,const sc_uint_base&) \
312  DECL_ASN_OP_T(op,const sc_signed&) \
313  DECL_ASN_OP_T(op,const sc_unsigned&)
314 #else
315 #define DECL_ASN_OP_OTHER(op)
316 #endif
317 
318 #define DECL_ASN_OP(op) \
319  DECL_ASN_OP_T(op,int) \
320  DECL_ASN_OP_T(op,unsigned int) \
321  DECL_ASN_OP_T(op,long) \
322  DECL_ASN_OP_T(op,unsigned long) \
323  DECL_ASN_OP_T(op,float) \
324  DECL_ASN_OP_T(op,double) \
325  DECL_ASN_OP_T(op,const char*) \
326  DECL_ASN_OP_T(op,const sc_fxval&) \
327  DECL_ASN_OP_T(op,const sc_fxval_fast&) \
328  DECL_ASN_OP_T(op,const sc_fxnum&) \
329  DECL_ASN_OP_T(op,const sc_fxnum_fast&) \
330  DECL_ASN_OP_OTHER(op)
331 
332  DECL_ASN_OP(=)
333 
334  DECL_ASN_OP(*=)
335  DECL_ASN_OP(/=)
336  DECL_ASN_OP(+=)
337  DECL_ASN_OP(-=)
338 
339  DECL_ASN_OP_T(<<=,int)
340  DECL_ASN_OP_T(>>=,int)
341 
342 #undef DECL_ASN_OP_T
343 #undef DECL_ASN_OP_OTHER
344 #undef DECL_ASN_OP
345 
346 
347  // auto-increment and auto-decrement
348 
349  const sc_fxval operator ++ ( int );
350  const sc_fxval operator -- ( int );
351 
352  sc_fxval& operator ++ ();
353  sc_fxval& operator -- ();
354 
355 
356  // implicit conversion
357 
358  operator double() const; // necessary evil!
359 
360 
361  // explicit conversion to primitive types
362 
363  short to_short() const;
364  unsigned short to_ushort() const;
365  int to_int() const;
366  unsigned int to_uint() const;
367  long to_long() const;
368  unsigned long to_ulong() const;
369  int64 to_int64() const;
370  uint64 to_uint64() const;
371  float to_float() const;
372  double to_double() const;
373 
374 
375  // explicit conversion to character string
376 
377  const std::string to_string() const;
378  const std::string to_string( sc_numrep ) const;
379  const std::string to_string( sc_numrep, bool ) const;
380  const std::string to_string( sc_fmt ) const;
381  const std::string to_string( sc_numrep, sc_fmt ) const;
382  const std::string to_string( sc_numrep, bool, sc_fmt ) const;
383 
384  const std::string to_dec() const;
385  const std::string to_bin() const;
386  const std::string to_oct() const;
387  const std::string to_hex() const;
388 
389 
390  // query value
391 
392  bool is_neg() const;
393  bool is_zero() const;
394  bool is_nan() const;
395  bool is_inf() const;
396  bool is_normal() const;
397 
398  bool rounding_flag() const;
399 
400 
401  // print or dump content
402 
403  void print( ::std::ostream& = ::std::cout ) const;
404  void scan( ::std::istream& = ::std::cin );
405  void dump( ::std::ostream& = ::std::cout ) const;
406 
407 
408  // internal use only;
409  bool get_bit( int ) const;
410 
411 protected:
412 
413  sc_fxval_observer* lock_observer() const;
414  void unlock_observer( sc_fxval_observer* ) const;
415 
416 
417  void get_type( int&, int&, sc_enc& ) const;
418 
419  const sc_fxval quantization( const scfx_params&, bool& ) const;
420  const sc_fxval overflow( const scfx_params&, bool& ) const;
421 
422 private:
423 
424  scfx_rep* m_rep;
425 
426  mutable sc_fxval_observer* m_observer;
427 
428 };
429 
430 
431 // ----------------------------------------------------------------------------
432 // CLASS : sc_fxval_fast
433 //
434 // Fixed-point value type; limited precision.
435 // ----------------------------------------------------------------------------
436 
437 class sc_fxval_fast
438 {
439 
440  friend class sc_fxnum_fast;
441 
442 protected:
443 
444  sc_fxval_fast_observer* observer() const;
445 
446 public:
447 
448  explicit sc_fxval_fast( sc_fxval_fast_observer* = 0 );
449  SCFX_EXPLICIT_ sc_fxval_fast( int, sc_fxval_fast_observer* = 0 );
450  SCFX_EXPLICIT_ sc_fxval_fast( unsigned int, sc_fxval_fast_observer* = 0 );
451  SCFX_EXPLICIT_ sc_fxval_fast( long, sc_fxval_fast_observer* = 0 );
452  SCFX_EXPLICIT_ sc_fxval_fast( unsigned long, sc_fxval_fast_observer* = 0 );
453  SCFX_EXPLICIT_ sc_fxval_fast( float, sc_fxval_fast_observer* = 0 );
454  SCFX_EXPLICIT_ sc_fxval_fast( double, sc_fxval_fast_observer* = 0 );
455  SCFX_EXPLICIT_ sc_fxval_fast( const char*, sc_fxval_fast_observer* = 0 );
456  sc_fxval_fast( const sc_fxval&, sc_fxval_fast_observer* = 0 );
457  sc_fxval_fast( const sc_fxval_fast&, sc_fxval_fast_observer* = 0 );
458  sc_fxval_fast( const sc_fxnum&, sc_fxval_fast_observer* = 0 );
459  sc_fxval_fast( const sc_fxnum_fast&, sc_fxval_fast_observer* = 0 );
460 #ifndef SC_FX_EXCLUDE_OTHER
461  SCFX_EXPLICIT_OTHER_ sc_fxval_fast( int64, sc_fxval_fast_observer* = 0 );
462  SCFX_EXPLICIT_OTHER_ sc_fxval_fast( uint64, sc_fxval_fast_observer* = 0 );
463  SCFX_EXPLICIT_OTHER_ sc_fxval_fast( const sc_int_base&, sc_fxval_fast_observer* = 0 );
464  SCFX_EXPLICIT_OTHER_ sc_fxval_fast( const sc_uint_base&, sc_fxval_fast_observer* = 0 );
465  SCFX_EXPLICIT_OTHER_ sc_fxval_fast( const sc_signed&, sc_fxval_fast_observer* = 0 );
466  SCFX_EXPLICIT_OTHER_ sc_fxval_fast( const sc_unsigned&, sc_fxval_fast_observer* = 0 );
467 #endif
468 
469  ~sc_fxval_fast();
470 
471  // internal use only;
472  double get_val() const;
473  void set_val( double );
474 
475 
476  // unary operators
477 
478  const sc_fxval_fast operator - () const;
479  const sc_fxval_fast& operator + () const;
480 
481 
482  // unary functions
483 
484  friend void neg( sc_fxval_fast&, const sc_fxval_fast& );
485 
486 
487  // binary operators
488 
489 #define DECL_BIN_OP_T(op,tp) \
490  friend const sc_fxval_fast operator op ( const sc_fxval_fast&, tp ); \
491  friend const sc_fxval_fast operator op ( tp, const sc_fxval_fast& );
492 
493 #ifndef SC_FX_EXCLUDE_OTHER
494 #define DECL_BIN_OP_OTHER(op) \
495  DECL_BIN_OP_T(op,int64) \
496  DECL_BIN_OP_T(op,uint64) \
497  DECL_BIN_OP_T(op,const sc_int_base&) \
498  DECL_BIN_OP_T(op,const sc_uint_base&) \
499  DECL_BIN_OP_T(op,const sc_signed&) \
500  DECL_BIN_OP_T(op,const sc_unsigned&)
501 #else
502 #define DECL_BIN_OP_OTHER(op)
503 #endif
504 
505 #define DECL_BIN_OP(op,dummy) \
506  friend const sc_fxval_fast operator op ( const sc_fxval_fast&, \
507  const sc_fxval_fast& ); \
508  DECL_BIN_OP_T(op,int) \
509  DECL_BIN_OP_T(op,unsigned int) \
510  DECL_BIN_OP_T(op,long) \
511  DECL_BIN_OP_T(op,unsigned long) \
512  DECL_BIN_OP_T(op,float) \
513  DECL_BIN_OP_T(op,double) \
514  DECL_BIN_OP_T(op,const char*) \
515  DECL_BIN_OP_OTHER(op)
516 
517  DECL_BIN_OP(*,mult)
518  DECL_BIN_OP(+,add)
519  DECL_BIN_OP(-,sub)
520 // don't use macro
521 // DECL_BIN_OP(/,div)
522  friend const sc_fxval_fast operator / ( const sc_fxval_fast&,
523  const sc_fxval_fast& );
524  DECL_BIN_OP_T(/,int)
525  DECL_BIN_OP_T(/,unsigned int)
526  DECL_BIN_OP_T(/,long)
527  DECL_BIN_OP_T(/,unsigned long)
528  DECL_BIN_OP_T(/,float)
529  DECL_BIN_OP_T(/,double)
530  DECL_BIN_OP_T(/,const char*)
531 // DECL_BIN_OP_OTHER(/)
532 #ifndef SC_FX_EXCLUDE_OTHER
533  DECL_BIN_OP_T(/,int64) \
534  DECL_BIN_OP_T(/,uint64) \
535  DECL_BIN_OP_T(/,const sc_int_base&) \
536  DECL_BIN_OP_T(/,const sc_uint_base&) \
537  DECL_BIN_OP_T(/,const sc_signed&) \
538  DECL_BIN_OP_T(/,const sc_unsigned&)
539 #endif
540 
541 #undef DECL_BIN_OP_T
542 #undef DECL_BIN_OP_OTHER
543 #undef DECL_BIN_OP
544 
545  friend const sc_fxval_fast operator << ( const sc_fxval_fast&, int );
546  friend const sc_fxval_fast operator >> ( const sc_fxval_fast&, int );
547 
548 
549  // binary functions
550 
551 #define DECL_BIN_FNC_T(fnc,tp) \
552  friend void fnc ( sc_fxval_fast&, const sc_fxval_fast&, tp ); \
553  friend void fnc ( sc_fxval_fast&, tp, const sc_fxval_fast& );
554 
555 #ifndef SC_FX_EXCLUDE_OTHER
556 #define DECL_BIN_FNC_OTHER(fnc) \
557  DECL_BIN_FNC_T(fnc,int64) \
558  DECL_BIN_FNC_T(fnc,uint64) \
559  DECL_BIN_FNC_T(fnc,const sc_int_base&) \
560  DECL_BIN_FNC_T(fnc,const sc_uint_base&) \
561  DECL_BIN_FNC_T(fnc,const sc_signed&) \
562  DECL_BIN_FNC_T(fnc,const sc_unsigned&)
563 #else
564 #define DECL_BIN_FNC_OTHER(fnc)
565 #endif
566 
567 #define DECL_BIN_FNC(fnc) \
568  friend void fnc ( sc_fxval_fast&, const sc_fxval_fast&, \
569  const sc_fxval_fast& ); \
570  DECL_BIN_FNC_T(fnc,int) \
571  DECL_BIN_FNC_T(fnc,unsigned int) \
572  DECL_BIN_FNC_T(fnc,long) \
573  DECL_BIN_FNC_T(fnc,unsigned long) \
574  DECL_BIN_FNC_T(fnc,float) \
575  DECL_BIN_FNC_T(fnc,double) \
576  DECL_BIN_FNC_T(fnc,const char*) \
577  DECL_BIN_FNC_T(fnc,const sc_fxval&) \
578  DECL_BIN_FNC_T(fnc,const sc_fxnum&) \
579  DECL_BIN_FNC_OTHER(fnc)
580 
581  DECL_BIN_FNC(mult)
582  DECL_BIN_FNC(div)
583  DECL_BIN_FNC(add)
584  DECL_BIN_FNC(sub)
585 
586 #undef DECL_BIN_FNC_T
587 #undef DECL_BIN_FNC_OTHER
588 #undef DECL_BIN_FNC
589 
590  friend void lshift( sc_fxval_fast&, const sc_fxval_fast&, int );
591  friend void rshift( sc_fxval_fast&, const sc_fxval_fast&, int );
592 
593 
594  // relational (including equality) operators
595 
596 #define DECL_REL_OP_T(op,tp) \
597  friend bool operator op ( const sc_fxval_fast&, tp ); \
598  friend bool operator op ( tp, const sc_fxval_fast& );
599 
600 #ifndef SC_FX_EXCLUDE_OTHER
601 #define DECL_REL_OP_OTHER(op) \
602  DECL_REL_OP_T(op,int64) \
603  DECL_REL_OP_T(op,uint64) \
604  DECL_REL_OP_T(op,const sc_int_base&) \
605  DECL_REL_OP_T(op,const sc_uint_base&) \
606  DECL_REL_OP_T(op,const sc_signed&) \
607  DECL_REL_OP_T(op,const sc_unsigned&)
608 #else
609 #define DECL_REL_OP_OTHER(op)
610 #endif
611 
612 #define DECL_REL_OP(op) \
613  friend bool operator op ( const sc_fxval_fast&, const sc_fxval_fast& ); \
614  DECL_REL_OP_T(op,int) \
615  DECL_REL_OP_T(op,unsigned int) \
616  DECL_REL_OP_T(op,long) \
617  DECL_REL_OP_T(op,unsigned long) \
618  DECL_REL_OP_T(op,float) \
619  DECL_REL_OP_T(op,double) \
620  DECL_REL_OP_T(op,const char*) \
621  DECL_REL_OP_OTHER(op)
622 
623  DECL_REL_OP(<)
624  DECL_REL_OP(<=)
625  DECL_REL_OP(>)
626  DECL_REL_OP(>=)
627  DECL_REL_OP(==)
628  DECL_REL_OP(!=)
629 
630 #undef DECL_REL_OP_T
631 #undef DECL_REL_OP_OTHER
632 #undef DECL_REL_OP
633 
634 
635  // assignment operators
636 
637 #define DECL_ASN_OP_T(op,tp) \
638  sc_fxval_fast& operator op( tp );
639 
640 #ifndef SC_FX_EXCLUDE_OTHER
641 #define DECL_ASN_OP_OTHER(op) \
642  DECL_ASN_OP_T(op,int64) \
643  DECL_ASN_OP_T(op,uint64) \
644  DECL_ASN_OP_T(op,const sc_int_base&) \
645  DECL_ASN_OP_T(op,const sc_uint_base&) \
646  DECL_ASN_OP_T(op,const sc_signed&) \
647  DECL_ASN_OP_T(op,const sc_unsigned&)
648 #else
649 #define DECL_ASN_OP_OTHER(op)
650 #endif
651 
652 #define DECL_ASN_OP(op) \
653  DECL_ASN_OP_T(op,int) \
654  DECL_ASN_OP_T(op,unsigned int) \
655  DECL_ASN_OP_T(op,long) \
656  DECL_ASN_OP_T(op,unsigned long) \
657  DECL_ASN_OP_T(op,float) \
658  DECL_ASN_OP_T(op,double) \
659  DECL_ASN_OP_T(op,const char*) \
660  DECL_ASN_OP_T(op,const sc_fxval&) \
661  DECL_ASN_OP_T(op,const sc_fxval_fast&) \
662  DECL_ASN_OP_T(op,const sc_fxnum&) \
663  DECL_ASN_OP_T(op,const sc_fxnum_fast&) \
664  DECL_ASN_OP_OTHER(op)
665 
666  DECL_ASN_OP(=)
667 
668  DECL_ASN_OP(*=)
669  DECL_ASN_OP(/=)
670  DECL_ASN_OP(+=)
671  DECL_ASN_OP(-=)
672 
673  DECL_ASN_OP_T(<<=,int)
674  DECL_ASN_OP_T(>>=,int)
675 
676 #undef DECL_ASN_OP_T
677 #undef DECL_ASN_OP_OTHER
678 #undef DECL_ASN_OP
679 
680 
681  // auto-increment and auto-decrement
682 
683  const sc_fxval_fast operator ++ ( int );
684  const sc_fxval_fast operator -- ( int );
685 
686  sc_fxval_fast& operator ++ ();
687  sc_fxval_fast& operator -- ();
688 
689 
690  // implicit conversion
691 
692  operator double() const; // necessary evil!
693 
694 
695  // explicit conversion to primitive types
696 
697  short to_short() const;
698  unsigned short to_ushort() const;
699  int to_int() const;
700  unsigned int to_uint() const;
701  long to_long() const;
702  unsigned long to_ulong() const;
703  int64 to_int64() const;
704  uint64 to_uint64() const;
705  float to_float() const;
706  double to_double() const;
707 
708 
709  // explicit conversion to character string
710 
711  const std::string to_string() const;
712  const std::string to_string( sc_numrep ) const;
713  const std::string to_string( sc_numrep, bool ) const;
714  const std::string to_string( sc_fmt ) const;
715  const std::string to_string( sc_numrep, sc_fmt ) const;
716  const std::string to_string( sc_numrep, bool, sc_fmt ) const;
717 
718  const std::string to_dec() const;
719  const std::string to_bin() const;
720  const std::string to_oct() const;
721  const std::string to_hex() const;
722 
723 
724  // query value
725 
726  bool is_neg() const;
727  bool is_zero() const;
728  bool is_nan() const;
729  bool is_inf() const;
730  bool is_normal() const;
731 
732  bool rounding_flag() const;
733 
734 
735  // print or dump content
736 
737  void print( ::std::ostream& = ::std::cout ) const;
738  void scan( ::std::istream& = ::std::cin );
739  void dump( ::std::ostream& = ::std::cout ) const;
740 
741 
742  // internal use only;
743  bool get_bit( int ) const;
744 
745 protected:
746 
747  sc_fxval_fast_observer* lock_observer() const;
748  void unlock_observer( sc_fxval_fast_observer* ) const;
749 
750 
751  static double from_string( const char* );
752 
753 private:
754 
755  double m_val;
756 
757  mutable sc_fxval_fast_observer* m_observer;
758 
759 };
760 
761 
762 // IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
763 
764 // ----------------------------------------------------------------------------
765 // CLASS : sc_fxval
766 //
767 // Fixed-point value type; arbitrary precision.
768 // ----------------------------------------------------------------------------
769 
770 // protected method
771 
772 inline
773 sc_fxval_observer*
774 sc_fxval::observer() const
775 {
776  return m_observer;
777 }
778 
779 
780 // internal use only;
781 inline
782 sc_fxval::sc_fxval( scfx_rep* a )
783 : m_rep( a != 0 ? a : new scfx_rep ),
784  m_observer( 0 )
785 {}
786 
787 
788 // public constructors
789 
790 inline
791 sc_fxval::sc_fxval( sc_fxval_observer* observer_ )
792 : m_rep( new scfx_rep ),
793  m_observer( observer_ )
794 {
795  SC_FXVAL_OBSERVER_DEFAULT_
796  SC_FXVAL_OBSERVER_CONSTRUCT_( *this )
797 }
798 
799 inline
800 sc_fxval::sc_fxval( const sc_fxval& a,
801  sc_fxval_observer* observer_ )
802 : m_rep( new scfx_rep( *a.m_rep ) ),
803  m_observer( observer_ )
804 {
805  SC_FXVAL_OBSERVER_DEFAULT_
806  SC_FXVAL_OBSERVER_READ_( a )
807  SC_FXVAL_OBSERVER_CONSTRUCT_( *this )
808  SC_FXVAL_OBSERVER_WRITE_( *this )
809 }
810 
811 #define DEFN_CTOR_T(tp,arg) \
812 inline \
813 sc_fxval::sc_fxval( tp a, \
814  sc_fxval_observer* observer_ ) \
815 : m_rep( new scfx_rep( arg ) ), \
816  m_observer( observer_ ) \
817 { \
818  SC_FXVAL_OBSERVER_DEFAULT_ \
819  SC_FXVAL_OBSERVER_CONSTRUCT_( *this ) \
820  SC_FXVAL_OBSERVER_WRITE_( *this ) \
821 }
822 
823 #define DEFN_CTOR_T_A(tp) DEFN_CTOR_T(tp,a)
824 #define DEFN_CTOR_T_B(tp) DEFN_CTOR_T(tp,a.to_double())
825 #define DEFN_CTOR_T_C(tp) DEFN_CTOR_T(tp,a.value())
826 
827 DEFN_CTOR_T_A(int)
828 DEFN_CTOR_T_A(unsigned int)
829 DEFN_CTOR_T_A(long)
830 DEFN_CTOR_T_A(unsigned long)
831 DEFN_CTOR_T_A(float)
832 DEFN_CTOR_T_A(double)
833 DEFN_CTOR_T_A(const char*)
834 DEFN_CTOR_T_B(const sc_fxval_fast&)
835 #ifndef SC_FX_EXCLUDE_OTHER
836 DEFN_CTOR_T_A(int64)
837 DEFN_CTOR_T_A(uint64)
838 DEFN_CTOR_T_C(const sc_int_base&)
839 DEFN_CTOR_T_C(const sc_uint_base&)
840 DEFN_CTOR_T_A(const sc_signed&)
841 DEFN_CTOR_T_A(const sc_unsigned&)
842 #endif
843 
844 #undef DEFN_CTOR_T
845 #undef DEFN_CTOR_T_A
846 #undef DEFN_CTOR_T_B
847 #undef DEFN_CTOR_T_C
848 
849 
850 inline
851 sc_fxval::~sc_fxval()
852 {
853  SC_FXVAL_OBSERVER_DESTRUCT_( *this )
854  delete m_rep;
855 }
856 
857 
858 // internal use only;
859 inline
860 const scfx_rep*
861 sc_fxval::get_rep() const
862 {
863  SC_FXVAL_OBSERVER_READ_( *this )
864  return m_rep;
865 }
866 
867 // internal use only;
868 inline
869 void
870 sc_fxval::set_rep( scfx_rep* rep_ )
871 {
872  delete m_rep;
873  m_rep = rep_;
874  SC_FXVAL_OBSERVER_WRITE_( *this )
875 }
876 
877 
878 // unary operators
879 
880 inline
881 const sc_fxval
882 sc_fxval::operator - () const
883 {
884  SC_FXVAL_OBSERVER_READ_( *this )
885  return sc_fxval( sc_dt::neg_scfx_rep( *m_rep ) );
886 }
887 
888 inline
889 const sc_fxval&
890 sc_fxval::operator + () const
891 {
892  // SC_FXVAL_OBSERVER_READ_( *this )
893  return *this;
894 }
895 
896 
897 // unary functions
898 
899 inline
900 void
901 neg( sc_fxval& c, const sc_fxval& a )
902 {
903  SC_FXVAL_OBSERVER_READ_( a )
904  delete c.m_rep;
905  c.m_rep = sc_dt::neg_scfx_rep( *a.m_rep );
906  SC_FXVAL_OBSERVER_WRITE_( c )
907 }
908 
909 
910 // binary operators
911 
912 #define DEFN_BIN_OP_T(op,fnc,tp) \
913 inline \
914 const sc_fxval \
915 operator op ( const sc_fxval& a, tp b ) \
916 { \
917  SC_FXVAL_OBSERVER_READ_( a ) \
918  sc_fxval tmp( b ); \
919  return sc_fxval( sc_dt::fnc ## _scfx_rep( *a.m_rep, *tmp.m_rep ) ); \
920 } \
921  \
922 inline \
923 const sc_fxval \
924 operator op ( tp a, const sc_fxval& b ) \
925 { \
926  SC_FXVAL_OBSERVER_READ_( b ) \
927  sc_fxval tmp( a ); \
928  return sc_fxval( sc_dt::fnc ## _scfx_rep( *tmp.m_rep, *b.m_rep ) ); \
929 }
930 
931 #ifndef SC_FX_EXCLUDE_OTHER
932 #define DEFN_BIN_OP_OTHER(op,fnc) \
933 DEFN_BIN_OP_T(op,fnc,int64) \
934 DEFN_BIN_OP_T(op,fnc,uint64) \
935 DEFN_BIN_OP_T(op,fnc,const sc_int_base&) \
936 DEFN_BIN_OP_T(op,fnc,const sc_uint_base&) \
937 DEFN_BIN_OP_T(op,fnc,const sc_signed&) \
938 DEFN_BIN_OP_T(op,fnc,const sc_unsigned&)
939 #else
940 #define DEFN_BIN_OP_OTHER(op,fnc)
941 #endif
942 
943 #define DEFN_BIN_OP(op,fnc) \
944 inline \
945 const sc_fxval \
946 operator op ( const sc_fxval& a, const sc_fxval& b ) \
947 { \
948  SC_FXVAL_OBSERVER_READ_( a ) \
949  SC_FXVAL_OBSERVER_READ_( b ) \
950  return sc_fxval( sc_dt::fnc ## _scfx_rep( *a.m_rep, *b.m_rep ) ); \
951 } \
952  \
953 DEFN_BIN_OP_T(op,fnc,int) \
954 DEFN_BIN_OP_T(op,fnc,unsigned int) \
955 DEFN_BIN_OP_T(op,fnc,long) \
956 DEFN_BIN_OP_T(op,fnc,unsigned long) \
957 DEFN_BIN_OP_T(op,fnc,float) \
958 DEFN_BIN_OP_T(op,fnc,double) \
959 DEFN_BIN_OP_T(op,fnc,const char*) \
960 DEFN_BIN_OP_T(op,fnc,const sc_fxval_fast&) \
961 DEFN_BIN_OP_OTHER(op,fnc)
962 
963 DEFN_BIN_OP(*,mult)
964 DEFN_BIN_OP(+,add)
965 DEFN_BIN_OP(-,sub)
966 // don't use macro
967 //DEFN_BIN_OP(/,div)
968 inline
969 const sc_fxval
970 operator / ( const sc_fxval& a, const sc_fxval& b )
971 {
972  SC_FXVAL_OBSERVER_READ_( a )
973  SC_FXVAL_OBSERVER_READ_( b )
974  return sc_fxval( sc_dt::div_scfx_rep( *a.m_rep, *b.m_rep ) );
975 }
976 
977 DEFN_BIN_OP_T(/,div,int)
978 DEFN_BIN_OP_T(/,div,unsigned int)
979 DEFN_BIN_OP_T(/,div,long)
980 DEFN_BIN_OP_T(/,div,unsigned long)
981 DEFN_BIN_OP_T(/,div,float)
982 DEFN_BIN_OP_T(/,div,double)
983 DEFN_BIN_OP_T(/,div,const char*)
984 DEFN_BIN_OP_T(/,div,const sc_fxval_fast&)
985 //DEFN_BIN_OP_OTHER(/,div)
986 #ifndef SC_FX_EXCLUDE_OTHER
987 DEFN_BIN_OP_T(/,div,int64) \
988 DEFN_BIN_OP_T(/,div,uint64) \
989 DEFN_BIN_OP_T(/,div,const sc_int_base&) \
990 DEFN_BIN_OP_T(/,div,const sc_uint_base&) \
991 DEFN_BIN_OP_T(/,div,const sc_signed&) \
992 DEFN_BIN_OP_T(/,div,const sc_unsigned&)
993 #endif
994 
995 #undef DEFN_BIN_OP_T
996 #undef DEFN_BIN_OP_OTHER
997 #undef DEFN_BIN_OP
998 
999 
1000 inline
1001 const sc_fxval
1002 operator << ( const sc_fxval& a, int b )
1003 {
1004  SC_FXVAL_OBSERVER_READ_( a )
1005  return sc_fxval( sc_dt::lsh_scfx_rep( *a.m_rep, b ) );
1006 }
1007 
1008 inline
1009 const sc_fxval
1010 operator >> ( const sc_fxval& a, int b )
1011 {
1012  SC_FXVAL_OBSERVER_READ_( a )
1013  return sc_fxval( sc_dt::rsh_scfx_rep( *a.m_rep, b ) );
1014 }
1015 
1016 
1017 // binary functions
1018 
1019 #define DEFN_BIN_FNC_T(fnc,tp) \
1020 inline \
1021 void \
1022 fnc ( sc_fxval& c, const sc_fxval& a, tp b ) \
1023 { \
1024  SC_FXVAL_OBSERVER_READ_( a ) \
1025  sc_fxval tmp( b ); \
1026  delete c.m_rep; \
1027  c.m_rep = sc_dt::fnc ## _scfx_rep( *a.m_rep, *tmp.m_rep ); \
1028  SC_FXVAL_OBSERVER_WRITE_( c ) \
1029 } \
1030  \
1031 inline \
1032 void \
1033 fnc ( sc_fxval& c, tp a, const sc_fxval& b ) \
1034 { \
1035  SC_FXVAL_OBSERVER_READ_( b ) \
1036  sc_fxval tmp( a ); \
1037  delete c.m_rep; \
1038  c.m_rep = sc_dt::fnc ## _scfx_rep( *tmp.m_rep, *b.m_rep ); \
1039  SC_FXVAL_OBSERVER_WRITE_( c ) \
1040 }
1041 
1042 #ifndef SC_FX_EXCLUDE_OTHER
1043 #define DEFN_BIN_FNC_OTHER(fnc) \
1044 DEFN_BIN_FNC_T(fnc,int64) \
1045 DEFN_BIN_FNC_T(fnc,uint64) \
1046 DEFN_BIN_FNC_T(fnc,const sc_int_base&) \
1047 DEFN_BIN_FNC_T(fnc,const sc_uint_base&) \
1048 DEFN_BIN_FNC_T(fnc,const sc_signed&) \
1049 DEFN_BIN_FNC_T(fnc,const sc_unsigned&)
1050 #else
1051 #define DEFN_BIN_FNC_OTHER(fnc)
1052 #endif
1053 
1054 #define DEFN_BIN_FNC(fnc) \
1055 inline \
1056 void \
1057 fnc( sc_fxval& c, const sc_fxval& a, const sc_fxval& b ) \
1058 { \
1059  SC_FXVAL_OBSERVER_READ_( a ) \
1060  SC_FXVAL_OBSERVER_READ_( b ) \
1061  delete c.m_rep; \
1062  c.m_rep = sc_dt::fnc ## _scfx_rep( *a.m_rep, *b.m_rep ); \
1063  SC_FXVAL_OBSERVER_WRITE_( c ) \
1064 } \
1065  \
1066 DEFN_BIN_FNC_T(fnc,int) \
1067 DEFN_BIN_FNC_T(fnc,unsigned int) \
1068 DEFN_BIN_FNC_T(fnc,long) \
1069 DEFN_BIN_FNC_T(fnc,unsigned long) \
1070 DEFN_BIN_FNC_T(fnc,float) \
1071 DEFN_BIN_FNC_T(fnc,double) \
1072 DEFN_BIN_FNC_T(fnc,const char*) \
1073 DEFN_BIN_FNC_T(fnc,const sc_fxval_fast&) \
1074 DEFN_BIN_FNC_OTHER(fnc)
1075 
1076 DEFN_BIN_FNC(mult)
1077 DEFN_BIN_FNC(div)
1078 DEFN_BIN_FNC(add)
1079 DEFN_BIN_FNC(sub)
1080 
1081 #undef DEFN_BIN_FNC_T
1082 #undef DEFN_BIN_FNC_OTHER
1083 #undef DEFN_BIN_FNC
1084 
1085 
1086 inline
1087 void
1088 lshift( sc_fxval& c, const sc_fxval& a, int b )
1089 {
1090  SC_FXVAL_OBSERVER_READ_( a )
1091  delete c.m_rep;
1092  c.m_rep = sc_dt::lsh_scfx_rep( *a.m_rep, b );
1093  SC_FXVAL_OBSERVER_WRITE_( c )
1094 }
1095 
1096 inline
1097 void
1098 rshift( sc_fxval& c, const sc_fxval& a, int b )
1099 {
1100  SC_FXVAL_OBSERVER_READ_( a )
1101  delete c.m_rep;
1102  c.m_rep = sc_dt::rsh_scfx_rep( *a.m_rep, b );
1103  SC_FXVAL_OBSERVER_WRITE_( c )
1104 }
1105 
1106 
1107 // relational (including equality) operators
1108 
1109 #define DEFN_REL_OP_T(op,ret,tp) \
1110 inline \
1111 bool \
1112 operator op ( const sc_fxval& a, tp b ) \
1113 { \
1114  SC_FXVAL_OBSERVER_READ_( a ) \
1115  sc_fxval tmp( b ); \
1116  int result = sc_dt::cmp_scfx_rep( *a.m_rep, *tmp.m_rep ); \
1117  return ( ret ); \
1118 } \
1119  \
1120 inline \
1121 bool \
1122 operator op ( tp a, const sc_fxval& b ) \
1123 { \
1124  SC_FXVAL_OBSERVER_READ_( b ) \
1125  sc_fxval tmp( a ); \
1126  int result = sc_dt::cmp_scfx_rep( *tmp.m_rep, *b.m_rep ); \
1127  return ( ret ); \
1128 }
1129 
1130 #ifndef SC_FX_EXCLUDE_OTHER
1131 #define DEFN_REL_OP_OTHER(op,ret) \
1132 DEFN_REL_OP_T(op,ret,int64) \
1133 DEFN_REL_OP_T(op,ret,uint64) \
1134 DEFN_REL_OP_T(op,ret,const sc_int_base&) \
1135 DEFN_REL_OP_T(op,ret,const sc_uint_base&) \
1136 DEFN_REL_OP_T(op,ret,const sc_signed&) \
1137 DEFN_REL_OP_T(op,ret,const sc_unsigned&)
1138 #else
1139 #define DEFN_REL_OP_OTHER(op,ret)
1140 #endif
1141 
1142 #define DEFN_REL_OP(op,ret) \
1143 inline \
1144 bool \
1145 operator op ( const sc_fxval& a, const sc_fxval& b) \
1146 { \
1147  SC_FXVAL_OBSERVER_READ_( a ) \
1148  SC_FXVAL_OBSERVER_READ_( b ) \
1149  int result = sc_dt::cmp_scfx_rep( *a.m_rep, *b.m_rep ); \
1150  return ( ret ); \
1151 } \
1152  \
1153 DEFN_REL_OP_T(op,ret,int) \
1154 DEFN_REL_OP_T(op,ret,unsigned int) \
1155 DEFN_REL_OP_T(op,ret,long) \
1156 DEFN_REL_OP_T(op,ret,unsigned long) \
1157 DEFN_REL_OP_T(op,ret,float) \
1158 DEFN_REL_OP_T(op,ret,double) \
1159 DEFN_REL_OP_T(op,ret,const char*) \
1160 DEFN_REL_OP_T(op,ret,const sc_fxval_fast&) \
1161 DEFN_REL_OP_OTHER(op,ret)
1162 
1163 DEFN_REL_OP(<,result < 0)
1164 DEFN_REL_OP(<=,result <= 0)
1165 DEFN_REL_OP(>,result > 0 && result != 2)
1166 DEFN_REL_OP(>=,result >= 0 && result != 2)
1167 DEFN_REL_OP(==,result == 0)
1168 DEFN_REL_OP(!=,result != 0)
1169 
1170 #undef DEFN_REL_OP_T
1171 #undef DEFN_REL_OP_OTHER
1172 #undef DEFN_REL_OP
1173 
1174 
1175 // assignment operators
1176 
1177 inline
1178 sc_fxval&
1179 sc_fxval::operator = ( const sc_fxval& a )
1180 {
1181  if( &a != this )
1182  {
1183  SC_FXVAL_OBSERVER_READ_( a )
1184  *m_rep = *a.m_rep;
1185  SC_FXVAL_OBSERVER_WRITE_( *this )
1186  }
1187  return *this;
1188 }
1189 
1190 #define DEFN_ASN_OP_T(tp) \
1191 inline \
1192 sc_fxval& \
1193 sc_fxval::operator = ( tp b ) \
1194 { \
1195  sc_fxval tmp( b ); \
1196  *m_rep = *tmp.m_rep; \
1197  SC_FXVAL_OBSERVER_WRITE_( *this ) \
1198  return *this; \
1199 }
1200 
1201 DEFN_ASN_OP_T(int)
1202 DEFN_ASN_OP_T(unsigned int)
1203 DEFN_ASN_OP_T(long)
1204 DEFN_ASN_OP_T(unsigned long)
1205 DEFN_ASN_OP_T(float)
1206 DEFN_ASN_OP_T(double)
1207 DEFN_ASN_OP_T(const char*)
1208 DEFN_ASN_OP_T(const sc_fxval_fast&)
1209 #ifndef SC_FX_EXCLUDE_OTHER
1210 DEFN_ASN_OP_T(int64)
1211 DEFN_ASN_OP_T(uint64)
1212 DEFN_ASN_OP_T(const sc_int_base&)
1213 DEFN_ASN_OP_T(const sc_uint_base&)
1214 DEFN_ASN_OP_T(const sc_signed&)
1215 DEFN_ASN_OP_T(const sc_unsigned&)
1216 #endif
1217 
1218 #undef DEFN_ASN_OP_T
1219 
1220 
1221 #define DEFN_ASN_OP_T(op,fnc,tp) \
1222 inline \
1223 sc_fxval& \
1224 sc_fxval::operator op ( tp b ) \
1225 { \
1226  SC_FXVAL_OBSERVER_READ_( *this ) \
1227  sc_fxval tmp( b ); \
1228  scfx_rep* new_rep = sc_dt::fnc ## _scfx_rep( *m_rep, *tmp.m_rep ); \
1229  delete m_rep; \
1230  m_rep = new_rep; \
1231  SC_FXVAL_OBSERVER_WRITE_( *this ) \
1232  return *this; \
1233 }
1234 
1235 #ifndef SC_FX_EXCLUDE_OTHER
1236 #define DEFN_ASN_OP_OTHER(op,fnc) \
1237 DEFN_ASN_OP_T(op,fnc,int64) \
1238 DEFN_ASN_OP_T(op,fnc,uint64) \
1239 DEFN_ASN_OP_T(op,fnc,const sc_int_base&) \
1240 DEFN_ASN_OP_T(op,fnc,const sc_uint_base&) \
1241 DEFN_ASN_OP_T(op,fnc,const sc_signed&) \
1242 DEFN_ASN_OP_T(op,fnc,const sc_unsigned&)
1243 #else
1244 #define DEFN_ASN_OP_OTHER(op,fnc)
1245 #endif
1246 
1247 #define DEFN_ASN_OP(op,fnc) \
1248 inline \
1249 sc_fxval& \
1250 sc_fxval::operator op ( const sc_fxval& b ) \
1251 { \
1252  SC_FXVAL_OBSERVER_READ_( *this ) \
1253  SC_FXVAL_OBSERVER_READ_( b ) \
1254  scfx_rep* new_rep = sc_dt::fnc ## _scfx_rep( *m_rep, *b.m_rep ); \
1255  delete m_rep; \
1256  m_rep = new_rep; \
1257  SC_FXVAL_OBSERVER_WRITE_( *this ) \
1258  return *this; \
1259 } \
1260  \
1261 DEFN_ASN_OP_T(op,fnc,int) \
1262 DEFN_ASN_OP_T(op,fnc,unsigned int) \
1263 DEFN_ASN_OP_T(op,fnc,long) \
1264 DEFN_ASN_OP_T(op,fnc,unsigned long) \
1265 DEFN_ASN_OP_T(op,fnc,float) \
1266 DEFN_ASN_OP_T(op,fnc,double) \
1267 DEFN_ASN_OP_T(op,fnc,const char*) \
1268 DEFN_ASN_OP_T(op,fnc,const sc_fxval_fast&) \
1269 DEFN_ASN_OP_OTHER(op,fnc)
1270 
1271 DEFN_ASN_OP(*=,mult)
1272 DEFN_ASN_OP(/=,div)
1273 DEFN_ASN_OP(+=,add)
1274 DEFN_ASN_OP(-=,sub)
1275 
1276 #undef DEFN_ASN_OP_T
1277 #undef DEFN_ASN_OP_OTHER
1278 #undef DEFN_ASN_OP
1279 
1280 
1281 inline
1282 sc_fxval&
1283 sc_fxval::operator <<= ( int b )
1284 {
1285  SC_FXVAL_OBSERVER_READ_( *this )
1286  m_rep->lshift( b );
1287  SC_FXVAL_OBSERVER_WRITE_( *this )
1288  return *this;
1289 }
1290 
1291 inline
1292 sc_fxval&
1293 sc_fxval::operator >>= ( int b )
1294 {
1295  SC_FXVAL_OBSERVER_READ_( *this )
1296  m_rep->rshift( b );
1297  SC_FXVAL_OBSERVER_WRITE_( *this )
1298  return *this;
1299 }
1300 
1301 
1302 // auto-increment and auto-decrement
1303 
1304 inline
1305 const sc_fxval
1306 sc_fxval::operator ++ ( int )
1307 {
1308  sc_fxval c = *this;
1309  (*this) += 1;
1310  return c;
1311 }
1312 
1313 inline
1314 const sc_fxval
1315 sc_fxval::operator -- ( int )
1316 {
1317  sc_fxval c = *this;
1318  (*this) -= 1;
1319  return c;
1320 }
1321 
1322 inline
1323 sc_fxval&
1324 sc_fxval::operator ++ ()
1325 {
1326  (*this) += 1;
1327  return *this;
1328 }
1329 
1330 inline
1331 sc_fxval&
1332 sc_fxval::operator -- ()
1333 {
1334  (*this) -= 1;
1335  return *this;
1336 }
1337 
1338 
1339 // implicit conversion
1340 
1341 inline
1342 sc_fxval::operator double() const
1343 {
1344  SC_FXVAL_OBSERVER_READ_( *this )
1345  return m_rep->to_double();
1346 }
1347 
1348 
1349 // explicit conversion to primitive types
1350 
1351 inline
1352 short
1353 sc_fxval::to_short() const
1354 {
1355  SC_FXVAL_OBSERVER_READ_( *this )
1356  return static_cast<short>( m_rep->to_double() );
1357 }
1358 
1359 inline
1360 unsigned short
1361 sc_fxval::to_ushort() const
1362 {
1363  SC_FXVAL_OBSERVER_READ_( *this )
1364  return static_cast<unsigned short>( m_rep->to_double() );
1365 }
1366 
1367 inline
1368 int
1369 sc_fxval::to_int() const
1370 {
1371  SC_FXVAL_OBSERVER_READ_( *this )
1372  return static_cast<int>( m_rep->to_double() );
1373 }
1374 
1375 inline
1376 int64
1377 sc_fxval::to_int64() const
1378 {
1379  SC_FXVAL_OBSERVER_READ_( *this )
1380  return static_cast<int64>( m_rep->to_double() );
1381 }
1382 
1383 inline
1384 uint64
1385 sc_fxval::to_uint64() const
1386 {
1387  SC_FXVAL_OBSERVER_READ_( *this )
1388  return static_cast<uint64>( m_rep->to_double() );
1389 }
1390 
1391 inline
1392 long
1393 sc_fxval::to_long() const
1394 {
1395  SC_FXVAL_OBSERVER_READ_( *this )
1396  return static_cast<long>( m_rep->to_double() );
1397 }
1398 
1399 inline
1400 unsigned int
1401 sc_fxval::to_uint() const
1402 {
1403  SC_FXVAL_OBSERVER_READ_( *this )
1404  return static_cast<unsigned int>( m_rep->to_double() );
1405 }
1406 
1407 inline
1408 unsigned long
1409 sc_fxval::to_ulong() const
1410 {
1411  SC_FXVAL_OBSERVER_READ_( *this )
1412  return static_cast<unsigned long>( m_rep->to_double() );
1413 }
1414 
1415 inline
1416 float
1417 sc_fxval::to_float() const
1418 {
1419  SC_FXVAL_OBSERVER_READ_( *this )
1420  return static_cast<float>( m_rep->to_double() );
1421 }
1422 
1423 inline
1424 double
1425 sc_fxval::to_double() const
1426 {
1427  SC_FXVAL_OBSERVER_READ_( *this )
1428  return m_rep->to_double();
1429 }
1430 
1431 
1432 // query value
1433 
1434 inline
1435 bool
1436 sc_fxval::is_neg() const
1437 {
1438  SC_FXVAL_OBSERVER_READ_( *this )
1439  return m_rep->is_neg();
1440 }
1441 
1442 inline
1443 bool
1444 sc_fxval::is_zero() const
1445 {
1446  SC_FXVAL_OBSERVER_READ_( *this )
1447  return m_rep->is_zero();
1448 }
1449 
1450 inline
1451 bool
1452 sc_fxval::is_nan() const
1453 {
1454  SC_FXVAL_OBSERVER_READ_( *this )
1455  return m_rep->is_nan();
1456 }
1457 
1458 inline
1459 bool
1460 sc_fxval::is_inf() const
1461 {
1462  SC_FXVAL_OBSERVER_READ_( *this )
1463  return m_rep->is_inf();
1464 }
1465 
1466 inline
1467 bool
1468 sc_fxval::is_normal() const
1469 {
1470  SC_FXVAL_OBSERVER_READ_( *this )
1471  return m_rep->is_normal();
1472 }
1473 
1474 
1475 inline
1476 bool
1477 sc_fxval::rounding_flag() const
1478 {
1479  return m_rep->rounding_flag();
1480 }
1481 
1482 
1483 // internal use only;
1484 inline
1485 bool
1486 sc_fxval::get_bit( int i ) const
1487 {
1488  return m_rep->get_bit( i );
1489 }
1490 
1491 
1492 // protected methods and friend functions
1493 
1494 inline
1495 void
1496 sc_fxval::get_type( int& wl, int& iwl, sc_enc& enc ) const
1497 {
1498  m_rep->get_type( wl, iwl, enc );
1499 }
1500 
1501 
1502 inline
1503 const sc_fxval
1504 sc_fxval::quantization( const scfx_params& params, bool& q_flag ) const
1505 {
1506  return sc_fxval( sc_dt::quantization_scfx_rep( *m_rep, params, q_flag ) );
1507 }
1508 
1509 inline
1510 const sc_fxval
1511 sc_fxval::overflow( const scfx_params& params, bool& o_flag ) const
1512 {
1513  return sc_fxval( sc_dt::overflow_scfx_rep( *m_rep, params, o_flag ) );
1514 }
1515 
1516 
1517 inline
1518 ::std::ostream&
1519 operator << ( ::std::ostream& os, const sc_fxval& a )
1520 {
1521  a.print( os );
1522  return os;
1523 }
1524 
1525 inline
1526 ::std::istream&
1527 operator >> ( ::std::istream& is, sc_fxval& a )
1528 {
1529  a.scan( is );
1530  return is;
1531 }
1532 
1533 
1534 // ----------------------------------------------------------------------------
1535 // CLASS : sc_fxval_fast
1536 //
1537 // Fixed-point value type; limited precision.
1538 // ----------------------------------------------------------------------------
1539 
1540 // protected method
1541 
1542 inline
1543 sc_fxval_fast_observer*
1544 sc_fxval_fast::observer() const
1545 {
1546  return m_observer;
1547 }
1548 
1549 
1550 // public constructors
1551 
1552 inline
1553 sc_fxval_fast::sc_fxval_fast( sc_fxval_fast_observer* observer_ )
1554 : m_val( 0.0 ),
1555  m_observer( observer_ )
1556 {
1557  SC_FXVAL_FAST_OBSERVER_DEFAULT_
1558  SC_FXVAL_FAST_OBSERVER_CONSTRUCT_( *this )
1559 }
1560 
1561 inline
1562 sc_fxval_fast::sc_fxval_fast( const sc_fxval_fast& a,
1563  sc_fxval_fast_observer* observer_ )
1564 : m_val( a.m_val ),
1565  m_observer( observer_ )
1566 {
1567  SC_FXVAL_FAST_OBSERVER_DEFAULT_
1568  SC_FXVAL_FAST_OBSERVER_READ_( a )
1569  SC_FXVAL_FAST_OBSERVER_CONSTRUCT_( *this )
1570  SC_FXVAL_FAST_OBSERVER_WRITE_( *this )
1571 }
1572 
1573 #define DEFN_CTOR_T(tp,arg) \
1574 inline \
1575 sc_fxval_fast::sc_fxval_fast( tp a, \
1576  sc_fxval_fast_observer* observer_ ) \
1577 : m_val( arg ), \
1578  m_observer( observer_ ) \
1579 { \
1580  SC_FXVAL_FAST_OBSERVER_DEFAULT_ \
1581  SC_FXVAL_FAST_OBSERVER_CONSTRUCT_( *this ) \
1582  SC_FXVAL_FAST_OBSERVER_WRITE_( *this ) \
1583 }
1584 
1585 #define DEFN_CTOR_T_A(tp) DEFN_CTOR_T(tp,static_cast<double>( a ))
1586 #define DEFN_CTOR_T_B(tp) DEFN_CTOR_T(tp,from_string( a ))
1587 #define DEFN_CTOR_T_C(tp) DEFN_CTOR_T(tp,a.to_double())
1588 
1589 DEFN_CTOR_T_A(int)
1590 DEFN_CTOR_T_A(unsigned int)
1591 DEFN_CTOR_T_A(long)
1592 DEFN_CTOR_T_A(unsigned long)
1593 DEFN_CTOR_T_A(float)
1594 DEFN_CTOR_T_A(double)
1595 DEFN_CTOR_T_B(const char*)
1596 DEFN_CTOR_T_C(const sc_fxval&)
1597 #ifndef SC_FX_EXCLUDE_OTHER
1598 DEFN_CTOR_T_A(int64)
1599 DEFN_CTOR_T_A(uint64)
1600 DEFN_CTOR_T_C(const sc_int_base&)
1601 DEFN_CTOR_T_C(const sc_uint_base&)
1602 DEFN_CTOR_T_C(const sc_signed&)
1603 DEFN_CTOR_T_C(const sc_unsigned&)
1604 #endif
1605 
1606 #undef DEFN_CTOR_T
1607 #undef DEFN_CTOR_T_A
1608 #undef DEFN_CTOR_T_B
1609 #undef DEFN_CTOR_T_C
1610 #undef DEFN_CTOR_T_D
1611 #undef DEFN_CTOR_T_E
1612 
1613 
1614 inline
1615 sc_fxval_fast::~sc_fxval_fast()
1616 {
1617  SC_FXVAL_FAST_OBSERVER_DESTRUCT_( *this )
1618 }
1619 
1620 
1621 // internal use only;
1622 inline
1623 double
1624 sc_fxval_fast::get_val() const
1625 {
1626  SC_FXVAL_FAST_OBSERVER_READ_( *this )
1627  return m_val;
1628 }
1629 
1630 // internal use only;
1631 inline
1632 void
1633 sc_fxval_fast::set_val( double val_ )
1634 {
1635  m_val = val_;
1636  SC_FXVAL_FAST_OBSERVER_WRITE_( *this )
1637 }
1638 
1639 
1640 // unary operators
1641 
1642 inline
1643 const sc_fxval_fast
1644 sc_fxval_fast::operator - () const
1645 {
1646  SC_FXVAL_FAST_OBSERVER_READ_( *this )
1647  return sc_fxval_fast( - m_val );
1648 }
1649 
1650 inline
1651 const sc_fxval_fast&
1652 sc_fxval_fast::operator + () const
1653 {
1654  // SC_FXVAL_FAST_OBSERVER_READ_( *this )
1655  return *this;
1656 }
1657 
1658 
1659 // unary functions
1660 
1661 inline
1662 void
1663 neg( sc_fxval_fast& c, const sc_fxval_fast& a )
1664 {
1665  SC_FXVAL_FAST_OBSERVER_READ_( a )
1666  c.m_val = - a.m_val;
1667  SC_FXVAL_FAST_OBSERVER_WRITE_( c )
1668 }
1669 
1670 
1671 // binary operators
1672 
1673 #define DEFN_BIN_OP_T(op,tp) \
1674 inline \
1675 const sc_fxval_fast \
1676 operator op ( const sc_fxval_fast& a, tp b ) \
1677 { \
1678  SC_FXVAL_FAST_OBSERVER_READ_( a ) \
1679  sc_fxval_fast tmp( b ); \
1680  return sc_fxval_fast( a.m_val op tmp.m_val ); \
1681 } \
1682  \
1683 inline \
1684 const sc_fxval_fast \
1685 operator op ( tp a, const sc_fxval_fast& b ) \
1686 { \
1687  SC_FXVAL_FAST_OBSERVER_READ_( b ) \
1688  sc_fxval_fast tmp( a ); \
1689  return sc_fxval_fast( tmp.m_val op b.m_val ); \
1690 }
1691 
1692 #ifndef SC_FX_EXCLUDE_OTHER
1693 #define DEFN_BIN_OP_OTHER(op) \
1694 DEFN_BIN_OP_T(op,int64) \
1695 DEFN_BIN_OP_T(op,uint64) \
1696 DEFN_BIN_OP_T(op,const sc_int_base&) \
1697 DEFN_BIN_OP_T(op,const sc_uint_base&) \
1698 DEFN_BIN_OP_T(op,const sc_signed&) \
1699 DEFN_BIN_OP_T(op,const sc_unsigned&)
1700 #else
1701 #define DEFN_BIN_OP_OTHER(op)
1702 #endif
1703 
1704 #define DEFN_BIN_OP(op,dummy) \
1705 inline \
1706 const sc_fxval_fast \
1707 operator op ( const sc_fxval_fast& a, const sc_fxval_fast& b ) \
1708 { \
1709  SC_FXVAL_FAST_OBSERVER_READ_( a ) \
1710  SC_FXVAL_FAST_OBSERVER_READ_( b ) \
1711  return sc_fxval_fast( a.m_val op b.m_val ); \
1712 } \
1713  \
1714 DEFN_BIN_OP_T(op,int) \
1715 DEFN_BIN_OP_T(op,unsigned int) \
1716 DEFN_BIN_OP_T(op,long) \
1717 DEFN_BIN_OP_T(op,unsigned long) \
1718 DEFN_BIN_OP_T(op,float) \
1719 DEFN_BIN_OP_T(op,double) \
1720 DEFN_BIN_OP_T(op,const char*) \
1721 DEFN_BIN_OP_OTHER(op)
1722 
1723 DEFN_BIN_OP(*,mult)
1724 DEFN_BIN_OP(+,add)
1725 DEFN_BIN_OP(-,sub)
1726 //DEFN_BIN_OP(/,div)
1727 inline
1728 const sc_fxval_fast
1729 operator / ( const sc_fxval_fast& a, const sc_fxval_fast& b )
1730 {
1731  SC_FXVAL_FAST_OBSERVER_READ_( a )
1732  SC_FXVAL_FAST_OBSERVER_READ_( b )
1733  return sc_fxval_fast( a.m_val / b.m_val );
1734 }
1735 
1736 DEFN_BIN_OP_T(/,int)
1737 DEFN_BIN_OP_T(/,unsigned int)
1738 DEFN_BIN_OP_T(/,long)
1739 DEFN_BIN_OP_T(/,unsigned long)
1740 DEFN_BIN_OP_T(/,float)
1741 DEFN_BIN_OP_T(/,double)
1742 DEFN_BIN_OP_T(/,const char*)
1743 //DEFN_BIN_OP_OTHER(/)
1744 #ifndef SC_FX_EXCLUDE_OTHER
1745 DEFN_BIN_OP_T(/,int64)
1746 DEFN_BIN_OP_T(/,uint64)
1747 DEFN_BIN_OP_T(/,const sc_int_base&)
1748 DEFN_BIN_OP_T(/,const sc_uint_base&)
1749 DEFN_BIN_OP_T(/,const sc_signed&)
1750 DEFN_BIN_OP_T(/,const sc_unsigned&)
1751 #endif
1752 
1753 
1754 #undef DEFN_BIN_OP_T
1755 #undef DEFN_BIN_OP_OTHER
1756 #undef DEFN_BIN_OP
1757 
1758 
1759 inline
1760 const sc_fxval_fast
1761 operator << ( const sc_fxval_fast& a, int b )
1762 {
1763  SC_FXVAL_FAST_OBSERVER_READ_( a )
1764  return sc_fxval_fast( a.m_val * scfx_pow2( b ) );
1765 }
1766 
1767 inline
1768 const sc_fxval_fast
1769 operator >> ( const sc_fxval_fast& a, int b )
1770 {
1771  SC_FXVAL_FAST_OBSERVER_READ_( a )
1772  return sc_fxval_fast( a.m_val * scfx_pow2( -b ) );
1773 }
1774 
1775 
1776 // binary functions
1777 
1778 #define DEFN_BIN_FNC_T(fnc,op,tp) \
1779 inline \
1780 void \
1781 fnc ( sc_fxval_fast& c, const sc_fxval_fast& a, tp b ) \
1782 { \
1783  SC_FXVAL_FAST_OBSERVER_READ_( a ) \
1784  sc_fxval_fast tmp( b ); \
1785  c.m_val = a.m_val op tmp.m_val; \
1786  SC_FXVAL_FAST_OBSERVER_WRITE_( c ) \
1787 } \
1788  \
1789 inline \
1790 void \
1791 fnc ( sc_fxval_fast& c, tp a, const sc_fxval_fast& b ) \
1792 { \
1793  SC_FXVAL_FAST_OBSERVER_READ_( b ) \
1794  sc_fxval_fast tmp( a ); \
1795  c.m_val = tmp.m_val op b.m_val; \
1796  SC_FXVAL_FAST_OBSERVER_WRITE_( c ) \
1797 }
1798 
1799 #ifndef SC_FX_EXCLUDE_OTHER
1800 #define DEFN_BIN_FNC_OTHER(fnc,op) \
1801 DEFN_BIN_FNC_T(fnc,op,int64) \
1802 DEFN_BIN_FNC_T(fnc,op,uint64) \
1803 DEFN_BIN_FNC_T(fnc,op,const sc_int_base&) \
1804 DEFN_BIN_FNC_T(fnc,op,const sc_uint_base&) \
1805 DEFN_BIN_FNC_T(fnc,op,const sc_signed&) \
1806 DEFN_BIN_FNC_T(fnc,op,const sc_unsigned&)
1807 #else
1808 #define DEFN_BIN_FNC_OTHER(fnc,op)
1809 #endif
1810 
1811 #define DEFN_BIN_FNC(fnc,op) \
1812 inline \
1813 void \
1814 fnc ( sc_fxval_fast& c, const sc_fxval_fast& a, const sc_fxval_fast& b ) \
1815 { \
1816  SC_FXVAL_FAST_OBSERVER_READ_( a ) \
1817  SC_FXVAL_FAST_OBSERVER_READ_( b ) \
1818  c.m_val = a.m_val op b.m_val; \
1819  SC_FXVAL_FAST_OBSERVER_WRITE_( c ) \
1820 } \
1821  \
1822 DEFN_BIN_FNC_T(fnc,op,int) \
1823 DEFN_BIN_FNC_T(fnc,op,unsigned int) \
1824 DEFN_BIN_FNC_T(fnc,op,long) \
1825 DEFN_BIN_FNC_T(fnc,op,unsigned long) \
1826 DEFN_BIN_FNC_T(fnc,op,float) \
1827 DEFN_BIN_FNC_T(fnc,op,double) \
1828 DEFN_BIN_FNC_T(fnc,op,const char*) \
1829 DEFN_BIN_FNC_OTHER(fnc,op)
1830 
1831 DEFN_BIN_FNC(mult,*)
1832 DEFN_BIN_FNC(div,/)
1833 DEFN_BIN_FNC(add,+)
1834 DEFN_BIN_FNC(sub,-)
1835 
1836 #undef DEFN_BIN_FNC_T
1837 #undef DEFN_BIN_FNC_OTHER
1838 #undef DEFN_BIN_FNC
1839 
1840 
1841 inline
1842 void
1843 lshift( sc_fxval_fast& c, const sc_fxval_fast& a, int b )
1844 {
1845  SC_FXVAL_FAST_OBSERVER_READ_( a )
1846  c.m_val = a.m_val * scfx_pow2( b );
1847  SC_FXVAL_FAST_OBSERVER_WRITE_( c )
1848 }
1849 
1850 inline
1851 void
1852 rshift( sc_fxval_fast& c, const sc_fxval_fast& a, int b )
1853 {
1854  SC_FXVAL_FAST_OBSERVER_READ_( a )
1855  c.m_val = a.m_val * scfx_pow2( -b );
1856  SC_FXVAL_FAST_OBSERVER_WRITE_( c )
1857 }
1858 
1859 
1860 // relational (including equality) operators
1861 
1862 #define DEFN_REL_OP_T(op,tp) \
1863 inline \
1864 bool \
1865 operator op ( const sc_fxval_fast& a, tp b ) \
1866 { \
1867  SC_FXVAL_FAST_OBSERVER_READ_( a ) \
1868  sc_fxval_fast tmp( b ); \
1869  return ( a.m_val op tmp.m_val ); \
1870 } \
1871  \
1872 inline \
1873 bool \
1874 operator op ( tp a, const sc_fxval_fast& b ) \
1875 { \
1876  SC_FXVAL_FAST_OBSERVER_READ_( b ) \
1877  sc_fxval_fast tmp( a ); \
1878  return ( tmp.m_val op b.m_val ); \
1879 }
1880 
1881 #ifndef SC_FX_EXCLUDE_OTHER
1882 #define DEFN_REL_OP_OTHER(op) \
1883 DEFN_REL_OP_T(op,int64) \
1884 DEFN_REL_OP_T(op,uint64) \
1885 DEFN_REL_OP_T(op,const sc_int_base&) \
1886 DEFN_REL_OP_T(op,const sc_uint_base&) \
1887 DEFN_REL_OP_T(op,const sc_signed&) \
1888 DEFN_REL_OP_T(op,const sc_unsigned&)
1889 #else
1890 #define DEFN_REL_OP_OTHER(op)
1891 #endif
1892 
1893 #define DEFN_REL_OP(op) \
1894 inline \
1895 bool \
1896 operator op ( const sc_fxval_fast& a, const sc_fxval_fast& b ) \
1897 { \
1898  SC_FXVAL_FAST_OBSERVER_READ_( a ) \
1899  SC_FXVAL_FAST_OBSERVER_READ_( b ) \
1900  return ( a.m_val op b.m_val ); \
1901 } \
1902  \
1903 DEFN_REL_OP_T(op,int) \
1904 DEFN_REL_OP_T(op,unsigned int) \
1905 DEFN_REL_OP_T(op,long) \
1906 DEFN_REL_OP_T(op,unsigned long) \
1907 DEFN_REL_OP_T(op,float) \
1908 DEFN_REL_OP_T(op,double) \
1909 DEFN_REL_OP_T(op,const char*) \
1910 DEFN_REL_OP_OTHER(op)
1911 
1912 DEFN_REL_OP(<)
1913 DEFN_REL_OP(<=)
1914 DEFN_REL_OP(>)
1915 DEFN_REL_OP(>=)
1916 DEFN_REL_OP(==)
1917 DEFN_REL_OP(!=)
1918 
1919 #undef DEFN_REL_OP_T
1920 #undef DEFN_REL_OP_OTHER
1921 #undef DEFN_REL_OP
1922 
1923 
1924 // assignment operators
1925 
1926 inline
1927 sc_fxval_fast&
1928 sc_fxval_fast::operator = ( const sc_fxval_fast& a )
1929 {
1930  if( &a != this )
1931  {
1932  SC_FXVAL_FAST_OBSERVER_READ_( a )
1933  m_val = a.m_val;
1934  SC_FXVAL_FAST_OBSERVER_WRITE_( *this )
1935  }
1936  return *this;
1937 }
1938 
1939 #define DEFN_ASN_OP_T(tp) \
1940 inline \
1941 sc_fxval_fast& \
1942 sc_fxval_fast::operator = ( tp a ) \
1943 { \
1944  sc_fxval_fast tmp( a ); \
1945  m_val = tmp.m_val; \
1946  SC_FXVAL_FAST_OBSERVER_WRITE_( *this ) \
1947  return *this; \
1948 }
1949 
1950 DEFN_ASN_OP_T(int)
1951 DEFN_ASN_OP_T(unsigned int)
1952 DEFN_ASN_OP_T(long)
1953 DEFN_ASN_OP_T(unsigned long)
1954 DEFN_ASN_OP_T(float)
1955 DEFN_ASN_OP_T(double)
1956 DEFN_ASN_OP_T(const char*)
1957 DEFN_ASN_OP_T(const sc_fxval&)
1958 #ifndef SC_FX_EXCLUDE_OTHER
1959 DEFN_ASN_OP_T(int64)
1960 DEFN_ASN_OP_T(uint64)
1961 DEFN_ASN_OP_T(const sc_int_base&)
1962 DEFN_ASN_OP_T(const sc_uint_base&)
1963 DEFN_ASN_OP_T(const sc_signed&)
1964 DEFN_ASN_OP_T(const sc_unsigned&)
1965 #endif
1966 
1967 #undef DEFN_ASN_OP_T
1968 
1969 
1970 #define DEFN_ASN_OP_T(op,tp) \
1971 inline \
1972 sc_fxval_fast& \
1973 sc_fxval_fast::operator op ( tp b ) \
1974 { \
1975  SC_FXVAL_FAST_OBSERVER_READ_( *this ) \
1976  sc_fxval_fast tmp( b ); \
1977  m_val op tmp.m_val; \
1978  SC_FXVAL_FAST_OBSERVER_WRITE_( *this ) \
1979  return *this; \
1980 }
1981 
1982 #ifndef SC_FX_EXCLUDE_OTHER
1983 #define DEFN_ASN_OP_OTHER(op) \
1984 DEFN_ASN_OP_T(op,int64) \
1985 DEFN_ASN_OP_T(op,uint64) \
1986 DEFN_ASN_OP_T(op,const sc_int_base&) \
1987 DEFN_ASN_OP_T(op,const sc_uint_base&) \
1988 DEFN_ASN_OP_T(op,const sc_signed&) \
1989 DEFN_ASN_OP_T(op,const sc_unsigned&)
1990 #else
1991 #define DEFN_ASN_OP_OTHER(op)
1992 #endif
1993 
1994 #define DEFN_ASN_OP(op) \
1995 inline \
1996 sc_fxval_fast& \
1997 sc_fxval_fast::operator op ( const sc_fxval_fast& b ) \
1998 { \
1999  SC_FXVAL_FAST_OBSERVER_READ_( *this ) \
2000  SC_FXVAL_FAST_OBSERVER_READ_( b ) \
2001  m_val op b.m_val; \
2002  SC_FXVAL_FAST_OBSERVER_WRITE_( *this ) \
2003  return *this; \
2004 } \
2005  \
2006 DEFN_ASN_OP_T(op,int) \
2007 DEFN_ASN_OP_T(op,unsigned int) \
2008 DEFN_ASN_OP_T(op,long) \
2009 DEFN_ASN_OP_T(op,unsigned long) \
2010 DEFN_ASN_OP_T(op,float) \
2011 DEFN_ASN_OP_T(op,double) \
2012 DEFN_ASN_OP_T(op,const char*) \
2013 DEFN_ASN_OP_T(op,const sc_fxval&) \
2014 DEFN_ASN_OP_OTHER(op)
2015 
2016 DEFN_ASN_OP(*=)
2017 DEFN_ASN_OP(/=)
2018 DEFN_ASN_OP(+=)
2019 DEFN_ASN_OP(-=)
2020 
2021 #undef DEFN_ASN_OP_T
2022 #undef DEFN_ASN_OP_OTHER
2023 #undef DEFN_ASN_OP
2024 
2025 
2026 inline
2027 sc_fxval_fast&
2028 sc_fxval_fast::operator <<= ( int b )
2029 {
2030  SC_FXVAL_FAST_OBSERVER_READ_( *this )
2031  m_val *= scfx_pow2( b );
2032  SC_FXVAL_FAST_OBSERVER_WRITE_( *this )
2033  return *this;
2034 }
2035 
2036 inline
2037 sc_fxval_fast&
2038 sc_fxval_fast::operator >>= ( int b )
2039 {
2040  SC_FXVAL_FAST_OBSERVER_READ_( *this )
2041  m_val *= scfx_pow2( -b );
2042  SC_FXVAL_FAST_OBSERVER_WRITE_( *this )
2043  return *this;
2044 }
2045 
2046 
2047 // auto-increment and auto-decrement
2048 
2049 inline
2050 const sc_fxval_fast
2051 sc_fxval_fast::operator ++ ( int )
2052 {
2053  SC_FXVAL_FAST_OBSERVER_READ_( *this )
2054  SC_FXVAL_FAST_OBSERVER_READ_( *this )
2055  double c = m_val;
2056  m_val = m_val + 1;
2057  SC_FXVAL_FAST_OBSERVER_WRITE_( *this )
2058  return sc_fxval_fast( c );
2059 }
2060 
2061 inline
2062 const sc_fxval_fast
2063 sc_fxval_fast::operator -- ( int )
2064 {
2065  SC_FXVAL_FAST_OBSERVER_READ_( *this )
2066  SC_FXVAL_FAST_OBSERVER_READ_( *this )
2067  double c = m_val;
2068  m_val = m_val - 1;
2069  SC_FXVAL_FAST_OBSERVER_WRITE_( *this )
2070  return sc_fxval_fast( c );
2071 }
2072 
2073 inline
2074 sc_fxval_fast&
2075 sc_fxval_fast::operator ++ ()
2076 {
2077  SC_FXVAL_FAST_OBSERVER_READ_( *this )
2078  m_val = m_val + 1;
2079  SC_FXVAL_FAST_OBSERVER_WRITE_( *this )
2080  return *this;
2081 }
2082 
2083 inline
2084 sc_fxval_fast&
2085 sc_fxval_fast::operator -- ()
2086 {
2087  SC_FXVAL_FAST_OBSERVER_READ_( *this )
2088  m_val = m_val - 1;
2089  SC_FXVAL_FAST_OBSERVER_WRITE_( *this )
2090  return *this;
2091 }
2092 
2093 
2094 // implicit conversion
2095 
2096 inline
2097 sc_fxval_fast::operator double() const
2098 {
2099  SC_FXVAL_FAST_OBSERVER_READ_( *this )
2100  return m_val;
2101 }
2102 
2103 
2104 // explicit conversion to primitive types
2105 
2106 inline
2107 short
2108 sc_fxval_fast::to_short() const
2109 {
2110  SC_FXVAL_FAST_OBSERVER_READ_( *this )
2111  return static_cast<short>( m_val );
2112 }
2113 
2114 inline
2115 unsigned short
2116 sc_fxval_fast::to_ushort() const
2117 {
2118  SC_FXVAL_FAST_OBSERVER_READ_( *this )
2119  return static_cast<unsigned short>( m_val );
2120 }
2121 
2122 inline
2123 int64
2124 sc_fxval_fast::to_int64() const
2125 {
2126  SC_FXVAL_FAST_OBSERVER_READ_( *this )
2127  return static_cast<int64>( m_val );
2128 }
2129 
2130 inline
2131 int
2132 sc_fxval_fast::to_int() const
2133 {
2134  SC_FXVAL_FAST_OBSERVER_READ_( *this )
2135  return static_cast<int>( m_val );
2136 }
2137 
2138 inline
2139 unsigned int
2140 sc_fxval_fast::to_uint() const
2141 {
2142  SC_FXVAL_FAST_OBSERVER_READ_( *this )
2143  return static_cast<unsigned int>( m_val );
2144 }
2145 
2146 inline
2147 uint64
2148 sc_fxval_fast::to_uint64() const
2149 {
2150  SC_FXVAL_FAST_OBSERVER_READ_( *this )
2151  return static_cast<uint64>( m_val );
2152 }
2153 
2154 inline
2155 long
2156 sc_fxval_fast::to_long() const
2157 {
2158  SC_FXVAL_FAST_OBSERVER_READ_( *this )
2159  return static_cast<long>( m_val );
2160 }
2161 
2162 inline
2163 unsigned long
2164 sc_fxval_fast::to_ulong() const
2165 {
2166  SC_FXVAL_FAST_OBSERVER_READ_( *this )
2167  return static_cast<unsigned long>( m_val );
2168 }
2169 
2170 inline
2171 float
2172 sc_fxval_fast::to_float() const
2173 {
2174  SC_FXVAL_FAST_OBSERVER_READ_( *this )
2175  return static_cast<float>( m_val );
2176 }
2177 
2178 inline
2179 double
2180 sc_fxval_fast::to_double() const
2181 {
2182  SC_FXVAL_FAST_OBSERVER_READ_( *this )
2183  return m_val;
2184 }
2185 
2186 
2187 // query value
2188 
2189 inline
2190 bool
2191 sc_fxval_fast::is_neg() const
2192 {
2193  SC_FXVAL_FAST_OBSERVER_READ_( *this )
2194  scfx_ieee_double id( m_val );
2195  return ( id.negative() != 0 );
2196 }
2197 
2198 inline
2199 bool
2200 sc_fxval_fast::is_zero() const
2201 {
2202  SC_FXVAL_FAST_OBSERVER_READ_( *this )
2203  scfx_ieee_double id( m_val );
2204  return id.is_zero();
2205 }
2206 
2207 inline
2208 bool
2209 sc_fxval_fast::is_nan() const
2210 {
2211  SC_FXVAL_FAST_OBSERVER_READ_( *this )
2212  scfx_ieee_double id( m_val );
2213  return id.is_nan();
2214 }
2215 
2216 inline
2217 bool
2218 sc_fxval_fast::is_inf() const
2219 {
2220  SC_FXVAL_FAST_OBSERVER_READ_( *this )
2221  scfx_ieee_double id( m_val );
2222  return id.is_inf();
2223 }
2224 
2225 inline
2226 bool
2227 sc_fxval_fast::is_normal() const
2228 {
2229  SC_FXVAL_FAST_OBSERVER_READ_( *this )
2230  scfx_ieee_double id( m_val );
2231  return ( id.is_normal() || id.is_subnormal() || id.is_zero() );
2232 }
2233 
2234 
2235 inline
2236 bool
2237 sc_fxval_fast::rounding_flag() const
2238 {
2239  // does not apply to sc_fxval_fast; included for API compatibility
2240  return false;
2241 }
2242 
2243 
2244 inline
2245 ::std::ostream&
2246 operator << ( ::std::ostream& os, const sc_fxval_fast& a )
2247 {
2248  a.print( os );
2249  return os;
2250 }
2251 
2252 inline
2253 ::std::istream&
2254 operator >> ( ::std::istream& is, sc_fxval_fast& a )
2255 {
2256  a.scan( is );
2257  return is;
2258 }
2259 
2260 } // namespace sc_dt
2261 
2262 #undef SCFX_EXPLICIT_
2263 #undef SCFX_EXPLICIT_OTHER_
2264 
2265 #endif
2266 
2267 // Taf!
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Definition: sc_fxval.h:652
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