1 /* 2 **************************************************************************** 3 * 4 * "DHRYSTONE" Benchmark Program 5 * ----------------------------- 6 * 7 * Version: C, Version 2.1 8 * 9 * File: dhry_1.c (part 2 of 3) 10 * 11 * Date: May 17, 1988 12 * 13 * Author: Reinhold P. Weicker 14 * 15 **************************************************************************** 16 */ 17 18 #include "dhry.h" 19 20 /* Global Variables: */ 21 22 Rec_Pointer Ptr_Glob, 23 Next_Ptr_Glob; 24 int Int_Glob; 25 Boolean Bool_Glob; 26 char Ch_1_Glob, 27 Ch_2_Glob; 28 int Arr_1_Glob [50]; 29 int Arr_2_Glob [50] [50]; 30 31 extern char *malloc (); 32 Enumeration Func_1 (); 33 /* forward declaration necessary since Enumeration may not simply be int */ 34 35 #ifndef REG 36 Boolean Reg = false; 37 #define REG 38 /* REG becomes defined as empty */ 39 /* i.e. no register variables */ 40 #else 41 Boolean Reg = true; 42 #endif 43 44 /* variables for time measurement: */ 45 46 #ifdef TIMES 47 struct tms time_info; 48 extern int times (); 49 /* see library function "times" */ 50 #define Too_Small_Time (2*HZ) 51 /* Measurements should last at least about 2 seconds */ 52 #endif 53 #ifdef TIME 54 extern long time(); 55 /* see library function "time" */ 56 #define Too_Small_Time 2 57 /* Measurements should last at least 2 seconds */ 58 #endif 59 #ifdef MSC_CLOCK 60 extern clock_t clock(); 61 #define Too_Small_Time (2*HZ) 62 #endif 63 64 long Begin_Time, 65 End_Time, 66 User_Time; 67 float Microseconds, 68 Dhrystones_Per_Second; 69 70 /* end of variables for time measurement */ 71 72 73 main () 74 /*****/ 75 76 /* main program, corresponds to procedures */ 77 /* Main and Proc_0 in the Ada version */ 78 { 79 One_Fifty Int_1_Loc; 80 REG One_Fifty Int_2_Loc; 81 One_Fifty Int_3_Loc; 82 REG char Ch_Index; 83 Enumeration Enum_Loc; 84 Str_30 Str_1_Loc; 85 Str_30 Str_2_Loc; 86 REG int Run_Index; 87 REG int Number_Of_Runs; 88 89 /* Initializations */ 90 91 Next_Ptr_Glob = (Rec_Pointer) malloc (sizeof (Rec_Type)); 92 Ptr_Glob = (Rec_Pointer) malloc (sizeof (Rec_Type)); 93 94 Ptr_Glob->Ptr_Comp = Next_Ptr_Glob; 95 Ptr_Glob->Discr = Ident_1; 96 Ptr_Glob->variant.var_1.Enum_Comp = Ident_3; 97 Ptr_Glob->variant.var_1.Int_Comp = 40; 98 strcpy (Ptr_Glob->variant.var_1.Str_Comp, 99 "DHRYSTONE PROGRAM, SOME STRING"); 100 strcpy (Str_1_Loc, "DHRYSTONE PROGRAM, 1'ST STRING"); 101 102 Arr_2_Glob [8][7] = 10; 103 /* Was missing in published program. Without this statement, */ 104 /* Arr_2_Glob [8][7] would have an undefined value. */ 105 /* Warning: With 16-Bit processors and Number_Of_Runs > 32000, */ 106 /* overflow may occur for this array element. */ 107 int n; 108 scanf ("%d", &n); 109 Number_Of_Runs = n; 110 111 112 /***************/ 113 /* Start timer */ 114 /***************/ 115 116 #ifdef TIMES 117 times (&time_info); 118 Begin_Time = (long) time_info.tms_utime; 119 #endif 120 #ifdef TIME 121 Begin_Time = time ( (long *) 0); 122 #endif 123 #ifdef MSC_CLOCK 124 Begin_Time = clock(); 125 #endif 126 127 for (Run_Index = 1; Run_Index <= Number_Of_Runs; ++Run_Index) 128 { 129 130 Proc_5(); 131 Proc_4(); 132 /* Ch_1_Glob == 'A', Ch_2_Glob == 'B', Bool_Glob == true */ 133 Int_1_Loc = 2; 134 Int_2_Loc = 3; 135 strcpy (Str_2_Loc, "DHRYSTONE PROGRAM, 2'ND STRING"); 136 Enum_Loc = Ident_2; 137 Bool_Glob = ! Func_2 (Str_1_Loc, Str_2_Loc); 138 /* Bool_Glob == 1 */ 139 while (Int_1_Loc < Int_2_Loc) /* loop body executed once */ 140 { 141 Int_3_Loc = 5 * Int_1_Loc - Int_2_Loc; 142 /* Int_3_Loc == 7 */ 143 Proc_7 (Int_1_Loc, Int_2_Loc, &Int_3_Loc); 144 /* Int_3_Loc == 7 */ 145 Int_1_Loc += 1; 146 } /* while */ 147 /* Int_1_Loc == 3, Int_2_Loc == 3, Int_3_Loc == 7 */ 148 Proc_8 (Arr_1_Glob, Arr_2_Glob, Int_1_Loc, Int_3_Loc); 149 /* Int_Glob == 5 */ 150 Proc_1 (Ptr_Glob); 151 for (Ch_Index = 'A'; Ch_Index <= Ch_2_Glob; ++Ch_Index) 152 /* loop body executed twice */ 153 { 154 if (Enum_Loc == Func_1 (Ch_Index, 'C')) 155 /* then, not executed */ 156 { 157 Proc_6 (Ident_1, &Enum_Loc); 158 strcpy (Str_2_Loc, "DHRYSTONE PROGRAM, 3'RD STRING"); 159 Int_2_Loc = Run_Index; 160 Int_Glob = Run_Index; 161 } 162 } 163 /* Int_1_Loc == 3, Int_2_Loc == 3, Int_3_Loc == 7 */ 164 Int_2_Loc = Int_2_Loc * Int_1_Loc; 165 Int_1_Loc = Int_2_Loc / Int_3_Loc; 166 Int_2_Loc = 7 * (Int_2_Loc - Int_3_Loc) - Int_1_Loc; 167 /* Int_1_Loc == 1, Int_2_Loc == 13, Int_3_Loc == 7 */ 168 Proc_2 (&Int_1_Loc); 169 /* Int_1_Loc == 5 */ 170 171 } /* loop "for Run_Index" */ 172 173 /**************/ 174 /* Stop timer */ 175 /**************/ 176 177 #ifdef TIMES 178 times (&time_info); 179 End_Time = (long) time_info.tms_utime; 180 #endif 181 #ifdef TIME 182 End_Time = time ( (long *) 0); 183 #endif 184 #ifdef MSC_CLOCK 185 End_Time = clock(); 186 #endif 187 User_Time = End_Time - Begin_Time; 188 189 if (User_Time < Too_Small_Time) 190 { 191 printf ("Measured time too small to obtain meaningful results\n"); 192 printf ("Please increase number of runs\n"); 193 printf ("\n"); 194 } 195 else 196 { 197 #ifdef TIME 198 Microseconds = (float) User_Time * Mic_secs_Per_Second 199 / (float) Number_Of_Runs; 200 Dhrystones_Per_Second = (float) Number_Of_Runs / (float) User_Time; 201 #else 202 Microseconds = (float) User_Time * Mic_secs_Per_Second 203 / ((float) HZ * ((float) Number_Of_Runs)); 204 Dhrystones_Per_Second = ((float) HZ * (float) Number_Of_Runs) 205 / (float) User_Time; 206 #endif 207 printf ("%6.1f \n", Dhrystones_Per_Second); 208 } 209 210 } 211 212 213 Proc_1 (Ptr_Val_Par) 214 /******************/ 215 216 REG Rec_Pointer Ptr_Val_Par; 217 /* executed once */ 218 { 219 REG Rec_Pointer Next_Record = Ptr_Val_Par->Ptr_Comp; 220 /* == Ptr_Glob_Next */ 221 /* Local variable, initialized with Ptr_Val_Par->Ptr_Comp, */ 222 /* corresponds to "rename" in Ada, "with" in Pascal */ 223 224 structassign (*Ptr_Val_Par->Ptr_Comp, *Ptr_Glob); 225 Ptr_Val_Par->variant.var_1.Int_Comp = 5; 226 Next_Record->variant.var_1.Int_Comp 227 = Ptr_Val_Par->variant.var_1.Int_Comp; 228 Next_Record->Ptr_Comp = Ptr_Val_Par->Ptr_Comp; 229 Proc_3 (&Next_Record->Ptr_Comp); 230 /* Ptr_Val_Par->Ptr_Comp->Ptr_Comp 231 == Ptr_Glob->Ptr_Comp */ 232 if (Next_Record->Discr == Ident_1) 233 /* then, executed */ 234 { 235 Next_Record->variant.var_1.Int_Comp = 6; 236 Proc_6 (Ptr_Val_Par->variant.var_1.Enum_Comp, 237 &Next_Record->variant.var_1.Enum_Comp); 238 Next_Record->Ptr_Comp = Ptr_Glob->Ptr_Comp; 239 Proc_7 (Next_Record->variant.var_1.Int_Comp, 10, 240 &Next_Record->variant.var_1.Int_Comp); 241 } 242 else /* not executed */ 243 structassign (*Ptr_Val_Par, *Ptr_Val_Par->Ptr_Comp); 244 return 0; } /* Proc_1 */ 245 246 247 Proc_2 (Int_Par_Ref) 248 /******************/ 249 /* executed once */ 250 /* *Int_Par_Ref == 1, becomes 4 */ 251 252 One_Fifty *Int_Par_Ref; 253 { 254 One_Fifty Int_Loc; 255 Enumeration Enum_Loc; 256 257 Int_Loc = *Int_Par_Ref + 10; 258 do /* executed once */ 259 if (Ch_1_Glob == 'A') 260 /* then, executed */ 261 { 262 Int_Loc -= 1; 263 *Int_Par_Ref = Int_Loc - Int_Glob; 264 Enum_Loc = Ident_1; 265 } /* if */ 266 while (Enum_Loc != Ident_1); /* true */ 267 return 0; } /* Proc_2 */ 268 269 270 Proc_3 (Ptr_Ref_Par) 271 /******************/ 272 /* executed once */ 273 /* Ptr_Ref_Par becomes Ptr_Glob */ 274 275 Rec_Pointer *Ptr_Ref_Par; 276 277 { 278 if (Ptr_Glob != Null) 279 /* then, executed */ 280 *Ptr_Ref_Par = Ptr_Glob->Ptr_Comp; 281 Proc_7 (10, Int_Glob, &Ptr_Glob->variant.var_1.Int_Comp); 282 return 0; } /* Proc_3 */ 283 284 285 Proc_4 () /* without parameters */ 286 /*******/ 287 /* executed once */ 288 { 289 Boolean Bool_Loc; 290 291 Bool_Loc = Ch_1_Glob == 'A'; 292 Bool_Glob = Bool_Loc | Bool_Glob; 293 Ch_2_Glob = 'B'; 294 return 0; } /* Proc_4 */ 295 296 297 Proc_5 () /* without parameters */ 298 /*******/ 299 /* executed once */ 300 { 301 Ch_1_Glob = 'A'; 302 Bool_Glob = false; 303 return 0; } /* Proc_5 */ 304 305 306 /* Procedure for the assignment of structures, */ 307 /* if the C compiler doesn't support this feature */ 308 #ifdef NOSTRUCTASSIGN 309 memcpy (d, s, l) 310 register char *d; 311 register char *s; 312 register int l; 313 { 314 while (l--) *d++ = *s++; 315 } 316 #endif 317 318 319
