2 ****************************************************************************
4 * "DHRYSTONE" Benchmark Program
5 * -----------------------------
7 * Version: C, Version 2.1
9 * File: dhry_1.c (part 2 of 3)
13 * Author: Reinhold P. Weicker
15 ****************************************************************************
20 /* Global Variables: */
29 int Arr_2_Glob [50] [50];
31 extern char *malloc ();
32 Enumeration Func_1 ();
33 /* forward declaration necessary since Enumeration may not simply be int */
38 /* REG becomes defined as empty */
39 /* i.e. no register variables */
44 /* variables for time measurement: */
57 #define Too_Small_Time 2
58 /* Measurements should last at least 2 seconds */
64 Dhrystones_Per_Second;
66 /* end of variables for time measurement */
72 /* main program, corresponds to procedures */
73 /* Main and Proc_0 in the Ada version */
76 REG One_Fifty Int_2_Loc;
83 REG int Number_Of_Runs;
87 Next_Ptr_Glob = (Rec_Pointer) malloc (sizeof (Rec_Type));
88 Ptr_Glob = (Rec_Pointer) malloc (sizeof (Rec_Type));
90 Ptr_Glob->Ptr_Comp = Next_Ptr_Glob;
91 Ptr_Glob->Discr = Ident_1;
92 Ptr_Glob->variant.var_1.Enum_Comp = Ident_3;
93 Ptr_Glob->variant.var_1.Int_Comp = 40;
94 strcpy (Ptr_Glob->variant.var_1.Str_Comp,
95 "DHRYSTONE PROGRAM, SOME STRING");
96 strcpy (Str_1_Loc, "DHRYSTONE PROGRAM, 1'ST STRING");
98 Arr_2_Glob [8][7] = 10;
99 /* Was missing in published program. Without this statement, */
100 /* Arr_2_Glob [8][7] would have an undefined value. */
101 /* Warning: With 16-Bit processors and Number_Of_Runs > 32000, */
102 /* overflow may occur for this array element. */
106 printf ("Dhrystone Benchmark, Version 2.1 (Language: C)\n");
112 printf ("Program compiled with 'register' attribute\n");
119 printf ("Program compiled without 'register' attribute\n");
124 printf ("Please give the number of runs through the benchmark: ");
131 Number_Of_Runs = n=1000;
136 printf ("Execution starts, %d runs through Dhrystone\n", Number_Of_Runs);
146 Begin_Time = (long) time_info.tms_utime;
149 Begin_Time = time ( (long *) 0);
153 for (Run_Index = 1; Run_Index <= Number_Of_Runs; ++Run_Index)
158 /* Ch_1_Glob == 'A', Ch_2_Glob == 'B', Bool_Glob == true */
161 strcpy (Str_2_Loc, "DHRYSTONE PROGRAM, 2'ND STRING");
163 Bool_Glob = ! Func_2 (Str_1_Loc, Str_2_Loc);
165 while (Int_1_Loc < Int_2_Loc) /* loop body executed once */
167 Int_3_Loc = 5 * Int_1_Loc - Int_2_Loc;
169 Proc_7 (Int_1_Loc, Int_2_Loc, &Int_3_Loc);
173 /* Int_1_Loc == 3, Int_2_Loc == 3, Int_3_Loc == 7 */
174 Proc_8 (Arr_1_Glob, Arr_2_Glob, Int_1_Loc, Int_3_Loc);
177 for (Ch_Index = 'A'; Ch_Index <= Ch_2_Glob; ++Ch_Index)
178 /* loop body executed twice */
180 if (Enum_Loc == Func_1 (Ch_Index, 'C'))
181 /* then, not executed */
183 Proc_6 (Ident_1, &Enum_Loc);
184 strcpy (Str_2_Loc, "DHRYSTONE PROGRAM, 3'RD STRING");
185 Int_2_Loc = Run_Index;
186 Int_Glob = Run_Index;
189 /* Int_1_Loc == 3, Int_2_Loc == 3, Int_3_Loc == 7 */
190 Int_2_Loc = Int_2_Loc * Int_1_Loc;
191 Int_1_Loc = Int_2_Loc / Int_3_Loc;
192 Int_2_Loc = 7 * (Int_2_Loc - Int_3_Loc) - Int_1_Loc;
193 /* Int_1_Loc == 1, Int_2_Loc == 13, Int_3_Loc == 7 */
197 } /* loop "for Run_Index" */
206 End_Time = (long) time_info.tms_utime;
209 End_Time = time ( (long *) 0);
214 printf ("Execution ends\n");
216 printf ("Final values of the variables used in the benchmark:\n");
218 printf ("Int_Glob: %d\n", Int_Glob);
219 printf (" should be: %d\n", 5);
220 printf ("Bool_Glob: %d\n", Bool_Glob);
221 printf (" should be: %d\n", 1);
222 printf ("Ch_1_Glob: %c\n", Ch_1_Glob);
223 printf (" should be: %c\n", 'A');
224 printf ("Ch_2_Glob: %c\n", Ch_2_Glob);
225 printf (" should be: %c\n", 'B');
226 printf ("Arr_1_Glob[8]: %d\n", Arr_1_Glob[8]);
227 printf (" should be: %d\n", 7);
228 printf ("Arr_2_Glob[8][7]: %d\n", Arr_2_Glob[8][7]);
229 printf (" should be: Number_Of_Runs + 10\n");
230 printf ("Ptr_Glob->\n");
231 printf (" Ptr_Comp: %d\n", (int) Ptr_Glob->Ptr_Comp);
232 printf (" should be: (implementation-dependent)\n");
233 printf (" Discr: %d\n", Ptr_Glob->Discr);
234 printf (" should be: %d\n", 0);
235 printf (" Enum_Comp: %d\n", Ptr_Glob->variant.var_1.Enum_Comp);
236 printf (" should be: %d\n", 2);
237 printf (" Int_Comp: %d\n", Ptr_Glob->variant.var_1.Int_Comp);
238 printf (" should be: %d\n", 17);
239 printf (" Str_Comp: %s\n", Ptr_Glob->variant.var_1.Str_Comp);
240 printf (" should be: DHRYSTONE PROGRAM, SOME STRING\n");
241 printf ("Next_Ptr_Glob->\n");
242 printf (" Ptr_Comp: %d\n", (int) Next_Ptr_Glob->Ptr_Comp);
243 printf (" should be: (implementation-dependent), same as above\n");
244 printf (" Discr: %d\n", Next_Ptr_Glob->Discr);
245 printf (" should be: %d\n", 0);
246 printf (" Enum_Comp: %d\n", Next_Ptr_Glob->variant.var_1.Enum_Comp);
247 printf (" should be: %d\n", 1);
248 printf (" Int_Comp: %d\n", Next_Ptr_Glob->variant.var_1.Int_Comp);
249 printf (" should be: %d\n", 18);
250 printf (" Str_Comp: %s\n",
251 Next_Ptr_Glob->variant.var_1.Str_Comp);
252 printf (" should be: DHRYSTONE PROGRAM, SOME STRING\n");
253 printf ("Int_1_Loc: %d\n", Int_1_Loc);
254 printf (" should be: %d\n", 5);
255 printf ("Int_2_Loc: %d\n", Int_2_Loc);
256 printf (" should be: %d\n", 13);
257 printf ("Int_3_Loc: %d\n", Int_3_Loc);
258 printf (" should be: %d\n", 7);
259 printf ("Enum_Loc: %d\n", Enum_Loc);
260 printf (" should be: %d\n", 1);
261 printf ("Str_1_Loc: %s\n", Str_1_Loc);
262 printf (" should be: DHRYSTONE PROGRAM, 1'ST STRING\n");
263 printf ("Str_2_Loc: %s\n", Str_2_Loc);
264 printf (" should be: DHRYSTONE PROGRAM, 2'ND STRING\n");
268 User_Time = End_Time - Begin_Time;
270 if (User_Time < Too_Small_Time)
273 printf ("Measured time too small to obtain meaningful results\n");
274 printf ("Please increase number of runs\n");
282 Microseconds = (float) User_Time * Mic_secs_Per_Second
283 / (float) Number_Of_Runs;
284 Dhrystones_Per_Second = (float) Number_Of_Runs / (float) User_Time;
288 Microseconds = (float) User_Time * Mic_secs_Per_Second
289 / ((float) HZ * ((float) Number_Of_Runs));
290 Dhrystones_Per_Second = ((float) HZ * (float) Number_Of_Runs)
295 printf ("Microseconds for one run through Dhrystone: ");
296 printf ("%6.1f \n", Microseconds);
297 printf ("Dhrystones per Second: ");
298 printf ("%6.1f \n", Dhrystones_Per_Second);
310 REG Rec_Pointer Ptr_Val_Par;
313 REG Rec_Pointer Next_Record = Ptr_Val_Par->Ptr_Comp;
314 /* == Ptr_Glob_Next */
315 /* Local variable, initialized with Ptr_Val_Par->Ptr_Comp, */
316 /* corresponds to "rename" in Ada, "with" in Pascal */
318 structassign (*Ptr_Val_Par->Ptr_Comp, *Ptr_Glob);
319 Ptr_Val_Par->variant.var_1.Int_Comp = 5;
320 Next_Record->variant.var_1.Int_Comp
321 = Ptr_Val_Par->variant.var_1.Int_Comp;
322 Next_Record->Ptr_Comp = Ptr_Val_Par->Ptr_Comp;
323 Proc_3 (&Next_Record->Ptr_Comp);
324 /* Ptr_Val_Par->Ptr_Comp->Ptr_Comp
325 == Ptr_Glob->Ptr_Comp */
326 if (Next_Record->Discr == Ident_1)
329 Next_Record->variant.var_1.Int_Comp = 6;
330 Proc_6 (Ptr_Val_Par->variant.var_1.Enum_Comp,
331 &Next_Record->variant.var_1.Enum_Comp);
332 Next_Record->Ptr_Comp = Ptr_Glob->Ptr_Comp;
333 Proc_7 (Next_Record->variant.var_1.Int_Comp, 10,
334 &Next_Record->variant.var_1.Int_Comp);
336 else /* not executed */
337 structassign (*Ptr_Val_Par, *Ptr_Val_Par->Ptr_Comp);
344 /* *Int_Par_Ref == 1, becomes 4 */
346 One_Fifty *Int_Par_Ref;
349 Enumeration Enum_Loc;
351 Int_Loc = *Int_Par_Ref + 10;
352 do /* executed once */
353 if (Ch_1_Glob == 'A')
357 *Int_Par_Ref = Int_Loc - Int_Glob;
360 while (Enum_Loc != Ident_1); /* true */
367 /* Ptr_Ref_Par becomes Ptr_Glob */
369 Rec_Pointer *Ptr_Ref_Par;
372 if (Ptr_Glob != Null)
374 *Ptr_Ref_Par = Ptr_Glob->Ptr_Comp;
375 Proc_7 (10, Int_Glob, &Ptr_Glob->variant.var_1.Int_Comp);
379 Proc_4 () /* without parameters */
385 Bool_Loc = Ch_1_Glob == 'A';
386 Bool_Glob = Bool_Loc | Bool_Glob;
391 Proc_5 () /* without parameters */
400 /* Procedure for the assignment of structures, */
401 /* if the C compiler doesn't support this feature */
402 #ifdef NOSTRUCTASSIGN
408 while (l--) *d++ = *s++;
414 ****************************************************************************
416 * "DHRYSTONE" Benchmark Program
417 * -----------------------------
419 * Version: C, Version 2.1
421 * File: dhry_2.c (part 3 of 3)
425 * Author: Reinhold P. Weicker
427 ****************************************************************************
432 /* REG becomes defined as empty */
433 /* i.e. no register variables */
437 extern char Ch_1_Glob;
440 Proc_6 (Enum_Val_Par, Enum_Ref_Par)
441 /*********************************/
443 /* Enum_Val_Par == Ident_3, Enum_Ref_Par becomes Ident_2 */
445 Enumeration Enum_Val_Par;
446 Enumeration *Enum_Ref_Par;
448 *Enum_Ref_Par = Enum_Val_Par;
449 if (! Func_3 (Enum_Val_Par))
450 /* then, not executed */
451 *Enum_Ref_Par = Ident_4;
452 switch (Enum_Val_Par)
455 *Enum_Ref_Par = Ident_1;
460 *Enum_Ref_Par = Ident_1;
461 else *Enum_Ref_Par = Ident_4;
463 case Ident_3: /* executed */
464 *Enum_Ref_Par = Ident_2;
468 *Enum_Ref_Par = Ident_3;
474 Proc_7 (Int_1_Par_Val, Int_2_Par_Val, Int_Par_Ref)
475 /**********************************************/
476 /* executed three times */
477 /* first call: Int_1_Par_Val == 2, Int_2_Par_Val == 3, */
478 /* Int_Par_Ref becomes 7 */
479 /* second call: Int_1_Par_Val == 10, Int_2_Par_Val == 5, */
480 /* Int_Par_Ref becomes 17 */
481 /* third call: Int_1_Par_Val == 6, Int_2_Par_Val == 10, */
482 /* Int_Par_Ref becomes 18 */
483 One_Fifty Int_1_Par_Val;
484 One_Fifty Int_2_Par_Val;
485 One_Fifty *Int_Par_Ref;
489 Int_Loc = Int_1_Par_Val + 2;
490 *Int_Par_Ref = Int_2_Par_Val + Int_Loc;
494 Proc_8 (Arr_1_Par_Ref, Arr_2_Par_Ref, Int_1_Par_Val, Int_2_Par_Val)
495 /*********************************************************************/
497 /* Int_Par_Val_1 == 3 */
498 /* Int_Par_Val_2 == 7 */
499 Arr_1_Dim Arr_1_Par_Ref;
500 Arr_2_Dim Arr_2_Par_Ref;
504 REG One_Fifty Int_Index;
505 REG One_Fifty Int_Loc;
507 Int_Loc = Int_1_Par_Val + 5;
508 Arr_1_Par_Ref [Int_Loc] = Int_2_Par_Val;
509 Arr_1_Par_Ref [Int_Loc+1] = Arr_1_Par_Ref [Int_Loc];
510 Arr_1_Par_Ref [Int_Loc+30] = Int_Loc;
511 for (Int_Index = Int_Loc; Int_Index <= Int_Loc+1; ++Int_Index)
512 Arr_2_Par_Ref [Int_Loc] [Int_Index] = Int_Loc;
513 Arr_2_Par_Ref [Int_Loc] [Int_Loc-1] += 1;
514 Arr_2_Par_Ref [Int_Loc+20] [Int_Loc] = Arr_1_Par_Ref [Int_Loc];
519 Enumeration Func_1 (Ch_1_Par_Val, Ch_2_Par_Val)
520 /*************************************************/
521 /* executed three times */
522 /* first call: Ch_1_Par_Val == 'H', Ch_2_Par_Val == 'R' */
523 /* second call: Ch_1_Par_Val == 'A', Ch_2_Par_Val == 'C' */
524 /* third call: Ch_1_Par_Val == 'B', Ch_2_Par_Val == 'C' */
526 Capital_Letter Ch_1_Par_Val;
527 Capital_Letter Ch_2_Par_Val;
529 Capital_Letter Ch_1_Loc;
530 Capital_Letter Ch_2_Loc;
532 Ch_1_Loc = Ch_1_Par_Val;
534 if (Ch_2_Loc != Ch_2_Par_Val)
537 else /* not executed */
539 Ch_1_Glob = Ch_1_Loc;
545 Boolean Func_2 (Str_1_Par_Ref, Str_2_Par_Ref)
546 /*************************************************/
548 /* Str_1_Par_Ref == "DHRYSTONE PROGRAM, 1'ST STRING" */
549 /* Str_2_Par_Ref == "DHRYSTONE PROGRAM, 2'ND STRING" */
551 Str_30 Str_1_Par_Ref;
552 Str_30 Str_2_Par_Ref;
554 REG One_Thirty Int_Loc;
555 Capital_Letter Ch_Loc;
558 while (Int_Loc <= 2) /* loop body executed once */
559 if (Func_1 (Str_1_Par_Ref[Int_Loc],
560 Str_2_Par_Ref[Int_Loc+1]) == Ident_1)
566 if (Ch_Loc >= 'W' && Ch_Loc < 'Z')
567 /* then, not executed */
570 /* then, not executed */
574 if (strcmp (Str_1_Par_Ref, Str_2_Par_Ref) > 0)
575 /* then, not executed */
587 Boolean Func_3 (Enum_Par_Val)
588 /***************************/
590 /* Enum_Par_Val == Ident_3 */
591 Enumeration Enum_Par_Val;
593 Enumeration Enum_Loc;
595 Enum_Loc = Enum_Par_Val;
596 if (Enum_Loc == Ident_3)
599 else /* not executed */