mono/mini/basic-float.cs

   1 using System;
   2 using System.Reflection;
   3
   4 /*
   5  * Regression tests for the mono JIT.
   6  *
   7  * Each test needs to be of the form:
   8  *
   9  * static int test_<result>_<name> ();
  10  *
  11  * where <result> is an integer (the value that needs to be returned by
  12  * the method to make it pass.
  13  * <name> is a user-displayed name used to identify the test.
  14  *
  15  * The tests can be driven in two ways:
  16  * *) running the program directly: Main() uses reflection to find and invoke
  17  *      the test methods (this is useful mostly to check that the tests are correct)
  18  * *) with the --regression switch of the jit (this is the preferred way since
  19  *      all the tests will be run with optimizations on and off)
  20  *
  21  * The reflection logic could be moved to a .dll since we need at least another
  22  * regression test file written in IL code to have better control on how
  23  * the IL code looks.
  24  */
  25
  26 class Tests {
  27
  28         static int Main () {
  29                 return TestDriver.RunTests (typeof (Tests));
  30         }
  31
  32         static int test_0_beq () {
  33                 double a = 2.0;
  34                 if (a != 2.0)
  35                         return 1;
  36                 return 0;
  37         }
  38
  39         static int test_0_bne_un () {
  40                 double a = 2.0;
  41                 if (a == 1.0)
  42                         return 1;
  43                 return 0;
  44         }
  45
  46         static int test_0_conv_r8 () {
  47                 double a = 2;
  48                 if (a != 2.0)
  49                         return 1;
  50                 return 0;
  51         }
  52
  53         static int test_0_conv_i () {
  54                 double a = 2.0;
  55                 int i = (int)a;
  56                 if (i != 2)
  57                         return 1;
  58                 uint ui = (uint)a;
  59                 if (ui != 2)
  60                         return 2;
  61                 short s = (short)a;
  62                 if (s != 2)
  63                         return 3;
  64                 ushort us = (ushort)a;
  65                 if (us != 2)
  66                         return 4;
  67                 byte b = (byte)a;
  68                 if (b != 2)
  69                         return 5;
  70                 sbyte sb = (sbyte)a;
  71                 if (sb != 2)
  72                         return 6;
  73                 return 0;
  74         }
  75
  76         static int test_5_conv_r4 () {
  77                 int i = 5;
  78                 float f = (float)i;
  79                 return (int)f;
  80         }
  81
  82         static int test_5_double_conv_r4 () {
  83                 double d = 5.0;
  84                 float f = (float)d;
  85                 return (int)f;
  86         }
  87
  88         static int test_5_float_conv_r8 () {
  89                 float f = 5.0F;
  90                 double d = (double)f;
  91                 return (int)d;
  92         }
  93
  94         static int test_5_conv_r8 () {
  95                 int i = 5;
  96                 double f = (double)i;
  97                 return (int)f;
  98         }
  99
 100         static int test_5_add () {
 101                 double a = 2.0;
 102                 double b = 3.0;
 103                 return (int)(a + b);
 104         }
 105
 106         static int test_5_sub () {
 107                 double a = 8.0;
 108                 double b = 3.0;
 109                 return (int)(a - b);
 110         }
 111
 112         static int test_24_mul () {
 113                 double a = 8.0;
 114                 double b = 3.0;
 115                 return (int)(a * b);
 116         }
 117
 118         static int test_4_div () {
 119                 double a = 8.0;
 120                 double b = 2.0;
 121                 return (int)(a / b);
 122         }
 123
 124         static int test_2_rem () {
 125                 double a = 8.0;
 126                 double b = 3.0;
 127                 return (int)(a % b);
 128         }
 129
 130         static int test_2_neg () {
 131                 double a = -2.0;
 132                 return (int)(-a);
 133         }
 134
 135         static int test_46_float_add_spill () {
 136                 // we overflow the FP stack
 137                 double a = 1;
 138                 double b = 2;
 139                 double c = 3;
 140                 double d = 4;
 141                 double e = 5;
 142                 double f = 6;
 143                 double g = 7;
 144                 double h = 8;
 145                 double i = 9;
 146
 147                 return (int)(1.0 + (a + (b + (c + (d + (e + (f + (g + (h + i)))))))));
 148         }
 149
 150         static int test_4_float_sub_spill () {
 151                 // we overflow the FP stack
 152                 double a = 1;
 153                 double b = 2;
 154                 double c = 3;
 155                 double d = 4;
 156                 double e = 5;
 157                 double f = 6;
 158                 double g = 7;
 159                 double h = 8;
 160                 double i = 9;
 161
 162                 return -(int)(1.0 - (a - (b - (c - (d - (e - (f - (g - (h - i)))))))));
 163                 ////// -(int)(1.0 - (1 - (2 - (3 - (4 - (5 - (6 - (7 - (8 - 9)))))))));
 164         }
 165
 166         static int test_362880_float_mul_spill () {
 167                 // we overflow the FP stack
 168                 double a = 1;
 169                 double b = 2;
 170                 double c = 3;
 171                 double d = 4;
 172                 double e = 5;
 173                 double f = 6;
 174                 double g = 7;
 175                 double h = 8;
 176                 double i = 9;
 177
 178                 return (int)(1.0 * (a * (b * (c * (d * (e * (f * (g * (h * i)))))))));
 179         }
 180
 181         static int test_4_long_cast () {
 182                 long a = 1000;
 183                 double d = (double)a;
 184                 long b = (long)d;
 185                 if (b != 1000)
 186                         return 0;
 187                 a = -1;
 188                 d = (double)a;
 189                 b = (long)d;
 190                 if (b != -1)
 191                         return 1;
 192                 return 4;
 193         }
 194
 195         static int test_4_single_long_cast () {
 196                 long a = 1000;
 197                 float d = (float)a;
 198                 long b = (long)d;
 199                 if (b != 1000)
 200                         return 0;
 201                 a = -1;
 202                 d = (float)a;
 203                 b = (long)d;
 204                 if (b != -1)
 205                         return 1;
 206                 return 4;
 207         }
 208
 209         public static int test_0_rounding () {
 210                 long ticks = 631502475130080000L;
 211                 long ticksperday = 864000000000L;
 212
 213                 double days = (double) ticks / ticksperday;
 214
 215                 if ((int)days != 730905)
 216                         return 1;
 217
 218                 return 0;
 219         }
 220
 221         /* FIXME: This only works on little-endian machines */
 222         /*
 223         static unsafe int test_2_negative_zero () {
 224                 int result = 0;
 225                 double d = -0.0;
 226                 float f = -0.0f;
 227
 228                 byte *ptr = (byte*)&d;
 229                 if (ptr [7] == 0)
 230                         return result;
 231                 result ++;
 232
 233                 ptr = (byte*)&f;
 234                 if (ptr [3] == 0)
 235                         return result;
 236                 result ++;
 237
 238                 return result;
 239         }
 240         */
 241
 242         static int test_16_float_cmp () {
 243                 double a = 2.0;
 244                 double b = 1.0;
 245                 int result = 0;
 246                 bool val;
 247
 248                 val = a == a;
 249                 if (!val)
 250                         return result;
 251                 result++;
 252
 253                 val = (a != a);
 254                 if (val)
 255                         return result;
 256                 result++;
 257
 258                 val = a < a;
 259                 if (val)
 260                         return result;
 261                 result++;
 262
 263                 val = a > a;
 264                 if (val)
 265                         return result;
 266                 result++;
 267
 268                 val = a <= a;
 269                 if (!val)
 270                         return result;
 271                 result++;
 272
 273                 val = a >= a;
 274                 if (!val)
 275                         return result;
 276                 result++;
 277
 278                 val = b == a;
 279                 if (val)
 280                         return result;
 281                 result++;
 282
 283                 val = b < a;
 284                 if (!val)
 285                         return result;
 286                 result++;
 287
 288                 val = b > a;
 289                 if (val)
 290                         return result;
 291                 result++;
 292
 293                 val = b <= a;
 294                 if (!val)
 295                         return result;
 296                 result++;
 297
 298                 val = b >= a;
 299                 if (val)
 300                         return result;
 301                 result++;
 302
 303                 val = a == b;
 304                 if (val)
 305                         return result;
 306                 result++;
 307
 308                 val = a < b;
 309                 if (val)
 310                         return result;
 311                 result++;
 312
 313                 val = a > b;
 314                 if (!val)
 315                         return result;
 316                 result++;
 317
 318                 val = a <= b;
 319                 if (val)
 320                         return result;
 321                 result++;
 322
 323                 val = a >= b;
 324                 if (!val)
 325                         return result;
 326                 result++;
 327
 328                 return result;
 329         }
 330
 331         static int test_15_float_cmp_un () {
 332                 double a = Double.NaN;
 333                 double b = 1.0;
 334                 int result = 0;
 335                 bool val;
 336
 337                 val = a == a;
 338                 if (val)
 339                         return result;
 340                 result++;
 341
 342                 val = a < a;
 343                 if (val)
 344                         return result;
 345                 result++;
 346
 347                 val = a > a;
 348                 if (val)
 349                         return result;
 350                 result++;
 351
 352                 val = a <= a;
 353                 if (val)
 354                         return result;
 355                 result++;
 356
 357                 val = a >= a;
 358                 if (val)
 359                         return result;
 360                 result++;
 361
 362                 val = b == a;
 363                 if (val)
 364                         return result;
 365                 result++;
 366
 367                 val = b < a;
 368                 if (val)
 369                         return result;
 370                 result++;
 371
 372                 val = b > a;
 373                 if (val)
 374                         return result;
 375                 result++;
 376
 377                 val = b <= a;
 378                 if (val)
 379                         return result;
 380                 result++;
 381
 382                 val = b >= a;
 383                 if (val)
 384                         return result;
 385                 result++;
 386
 387                 val = a == b;
 388                 if (val)
 389                         return result;
 390                 result++;
 391
 392                 val = a < b;
 393                 if (val)
 394                         return result;
 395                 result++;
 396
 397                 val = a > b;
 398                 if (val)
 399                         return result;
 400                 result++;
 401
 402                 val = a <= b;
 403                 if (val)
 404                         return result;
 405                 result++;
 406
 407                 val = a >= b;
 408                 if (val)
 409                         return result;
 410                 result++;
 411
 412                 return result;
 413         }
 414
 415         static int test_15_float_branch () {
 416                 double a = 2.0;
 417                 double b = 1.0;
 418                 int result = 0;
 419
 420                 if (!(a == a))
 421                         return result;
 422                 result++;
 423
 424                 if (a < a)
 425                         return result;
 426                 result++;
 427
 428                 if (a > a)
 429                         return result;
 430                 result++;
 431
 432                 if (!(a <= a))
 433                         return result;
 434                 result++;
 435
 436                 if (!(a >= a))
 437                         return result;
 438                 result++;
 439
 440                 if (b == a)
 441                         return result;
 442                 result++;
 443
 444                 if (!(b < a))
 445                         return result;
 446                 result++;
 447
 448                 if (b > a)
 449                         return result;
 450                 result++;
 451
 452                 if (!(b <= a))
 453                         return result;
 454                 result++;
 455
 456                 if (b >= a)
 457                         return result;
 458                 result++;
 459
 460                 if (a == b)
 461                         return result;
 462                 result++;
 463
 464                 if (a < b)
 465                         return result;
 466                 result++;
 467
 468                 if (!(a > b))
 469                         return result;
 470                 result++;
 471
 472                 if (a <= b)
 473                         return result;
 474                 result++;
 475
 476                 if (!(a >= b))
 477                         return result;
 478                 result++;
 479
 480                 return result;
 481         }
 482
 483         static int test_15_float_branch_un () {
 484                 double a = Double.NaN;
 485                 double b = 1.0;
 486                 int result = 0;
 487
 488                 if (a == a)
 489                         return result;
 490                 result++;
 491
 492                 if (a < a)
 493                         return result;
 494                 result++;
 495
 496                 if (a > a)
 497                         return result;
 498                 result++;
 499
 500                 if (a <= a)
 501                         return result;
 502                 result++;
 503
 504                 if (a >= a)
 505                         return result;
 506                 result++;
 507
 508                 if (b == a)
 509                         return result;
 510                 result++;
 511
 512                 if (b < a)
 513                         return result;
 514                 result++;
 515
 516                 if (b > a)
 517                         return result;
 518                 result++;
 519
 520                 if (b <= a)
 521                         return result;
 522                 result++;
 523
 524                 if (b >= a)
 525                         return result;
 526                 result++;
 527
 528                 if (a == b)
 529                         return result;
 530                 result++;
 531
 532                 if (a < b)
 533                         return result;
 534                 result++;
 535
 536                 if (a > b)
 537                         return result;
 538                 result++;
 539
 540                 if (a <= b)
 541                         return result;
 542                 result++;
 543
 544                 if (a >= b)
 545                         return result;
 546                 result++;
 547
 548                 return result;
 549         }
 550
 551         static int test_0_float_precision () {
 552                 float f1 = 3.40282346638528859E+38f;
 553                 float f2 = 3.40282346638528859E+38f;
 554                 float PositiveInfinity =  1.0f / 0.0f;
 555                 float f = f1 + f2;
 556
 557                 return f == PositiveInfinity ? 0 : 1;
 558         }
 559 }
 560