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  * public 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 /* A comparison made to same variable. */
  27 #pragma warning disable 1718
  28
  29 class Tests {
  30
  31         public static int Main () {
  32                 return TestDriver.RunTests (typeof (Tests));
  33         }
  34
  35         public static int test_0_beq () {
  36                 double a = 2.0;
  37                 if (a != 2.0)
  38                         return 1;
  39                 return 0;
  40         }
  41
  42         public static int test_0_bne_un () {
  43                 double a = 2.0;
  44                 if (a == 1.0)
  45                         return 1;
  46                 return 0;
  47         }
  48
  49         public static int test_0_conv_r8 () {
  50                 double a = 2;
  51                 if (a != 2.0)
  52                         return 1;
  53                 return 0;
  54         }
  55
  56         public static int test_0_conv_i () {
  57                 double a = 2.0;
  58                 int i = (int)a;
  59                 if (i != 2)
  60                         return 1;
  61                 uint ui = (uint)a;
  62                 if (ui != 2)
  63                         return 2;
  64                 short s = (short)a;
  65                 if (s != 2)
  66                         return 3;
  67                 ushort us = (ushort)a;
  68                 if (us != 2)
  69                         return 4;
  70                 byte b = (byte)a;
  71                 if (b != 2)
  72                         return 5;
  73                 sbyte sb = (sbyte)a;
  74                 if (sb != 2)
  75                         return 6;
  76                 return 0;
  77         }
  78
  79         public static int test_5_conv_r4 () {
  80                 int i = 5;
  81                 float f = (float)i;
  82                 return (int)f;
  83         }
  84
  85         public static int test_0_conv_r4_m1 () {
  86                 int i = -1;
  87                 float f = (float)i;
  88                 return (int)f + 1;
  89         }
  90
  91         public static int test_5_double_conv_r4 () {
  92                 double d = 5.0;
  93                 float f = (float)d;
  94                 return (int)f;
  95         }
  96
  97         public static int test_5_float_conv_r8 () {
  98                 float f = 5.0F;
  99                 double d = (double)f;
 100                 return (int)d;
 101         }
 102
 103         public static int test_5_conv_r8 () {
 104                 int i = 5;
 105                 double f = (double)i;
 106                 return (int)f;
 107         }
 108
 109         public static int test_5_add () {
 110                 double a = 2.0;
 111                 double b = 3.0;
 112                 return (int)(a + b);
 113         }
 114
 115         public static int test_5_sub () {
 116                 double a = 8.0;
 117                 double b = 3.0;
 118                 return (int)(a - b);
 119         }
 120
 121         public static int test_24_mul () {
 122                 double a = 8.0;
 123                 double b = 3.0;
 124                 return (int)(a * b);
 125         }
 126
 127         public static int test_4_div () {
 128                 double a = 8.0;
 129                 double b = 2.0;
 130                 return (int)(a / b);
 131         }
 132
 133         public static int test_2_rem () {
 134                 double a = 8.0;
 135                 double b = 3.0;
 136                 return (int)(a % b);
 137         }
 138
 139         public static int test_2_neg () {
 140                 double a = -2.0;
 141                 return (int)(-a);
 142         }
 143
 144         public static int test_46_float_add_spill () {
 145                 // we overflow the FP stack
 146                 double a = 1;
 147                 double b = 2;
 148                 double c = 3;
 149                 double d = 4;
 150                 double e = 5;
 151                 double f = 6;
 152                 double g = 7;
 153                 double h = 8;
 154                 double i = 9;
 155
 156                 return (int)(1.0 + (a + (b + (c + (d + (e + (f + (g + (h + i)))))))));
 157         }
 158
 159         public static int test_4_float_sub_spill () {
 160                 // we overflow the FP stack
 161                 double a = 1;
 162                 double b = 2;
 163                 double c = 3;
 164                 double d = 4;
 165                 double e = 5;
 166                 double f = 6;
 167                 double g = 7;
 168                 double h = 8;
 169                 double i = 9;
 170
 171                 return -(int)(1.0 - (a - (b - (c - (d - (e - (f - (g - (h - i)))))))));
 172                 ////// -(int)(1.0 - (1 - (2 - (3 - (4 - (5 - (6 - (7 - (8 - 9)))))))));
 173         }
 174
 175         public static int test_362880_float_mul_spill () {
 176                 // we overflow the FP stack
 177                 double a = 1;
 178                 double b = 2;
 179                 double c = 3;
 180                 double d = 4;
 181                 double e = 5;
 182                 double f = 6;
 183                 double g = 7;
 184                 double h = 8;
 185                 double i = 9;
 186
 187                 return (int)(1.0 * (a * (b * (c * (d * (e * (f * (g * (h * i)))))))));
 188         }
 189
 190         public static int test_4_long_cast () {
 191                 long a = 1000;
 192                 double d = (double)a;
 193                 long b = (long)d;
 194                 if (b != 1000)
 195                         return 0;
 196                 a = -1;
 197                 d = (double)a;
 198                 b = (long)d;
 199                 if (b != -1)
 200                         return 1;
 201                 return 4;
 202         }
 203
 204         public static int test_4_ulong_cast () {
 205                 ulong a = 1000;
 206                 double d = (double)a;
 207                 ulong b = (ulong)d;
 208                 if (b != 1000)
 209                         return 0;
 210                 return 4;
 211         }
 212
 213         public static int test_4_single_long_cast () {
 214                 long a = 1000;
 215                 float d = (float)a;
 216                 long b = (long)d;
 217                 if (b != 1000)
 218                         return 0;
 219                 a = -1;
 220                 d = (float)a;
 221                 b = (long)d;
 222                 if (b != -1)
 223                         return 1;
 224                 return 4;
 225         }
 226
 227         public static int test_0_lconv_to_r8 () {
 228                 long a = 150;
 229                 double b = (double) a;
 230
 231                 if (b != 150.0)
 232                         return 1;
 233                 return 0;
 234         }
 235
 236         public static int test_0_lconv_to_r4 () {
 237                 long a = 3000;
 238                 float b = (float) a;
 239
 240                 if (b != 3000.0F)
 241                         return 1;
 242                 return 0;
 243         }
 244
 245         static void doit (double value, out long m) {
 246                 m = (long) value;
 247         }
 248
 249         public static int test_0_ftol_clobber () {
 250                 long m;
 251                 doit (1.3, out m);
 252                 if (m != 1)
 253                         return 2;
 254                 return 0;
 255         }
 256
 257         public static int test_0_rounding () {
 258                 long ticks = 631502475130080000L;
 259                 long ticksperday = 864000000000L;
 260
 261                 double days = (double) ticks / ticksperday;
 262
 263                 if ((int)days != 730905)
 264                         return 1;
 265
 266                 return 0;
 267         }
 268
 269         /* FIXME: This only works on little-endian machines */
 270         /*
 271         static unsafe int test_2_negative_zero () {
 272                 int result = 0;
 273                 double d = -0.0;
 274                 float f = -0.0f;
 275
 276                 byte *ptr = (byte*)&d;
 277                 if (ptr [7] == 0)
 278                         return result;
 279                 result ++;
 280
 281                 ptr = (byte*)&f;
 282                 if (ptr [3] == 0)
 283                         return result;
 284                 result ++;
 285
 286                 return result;
 287         }
 288         */
 289
 290         public static int test_16_float_cmp () {
 291                 double a = 2.0;
 292                 double b = 1.0;
 293                 int result = 0;
 294                 bool val;
 295
 296                 val = a == a;
 297                 if (!val)
 298                         return result;
 299                 result++;
 300
 301                 val = (a != a);
 302                 if (val)
 303                         return result;
 304                 result++;
 305
 306                 val = a < a;
 307                 if (val)
 308                         return result;
 309                 result++;
 310
 311                 val = a > a;
 312                 if (val)
 313                         return result;
 314                 result++;
 315
 316                 val = a <= a;
 317                 if (!val)
 318                         return result;
 319                 result++;
 320
 321                 val = a >= a;
 322                 if (!val)
 323                         return result;
 324                 result++;
 325
 326                 val = b == a;
 327                 if (val)
 328                         return result;
 329                 result++;
 330
 331                 val = b < a;
 332                 if (!val)
 333                         return result;
 334                 result++;
 335
 336                 val = b > a;
 337                 if (val)
 338                         return result;
 339                 result++;
 340
 341                 val = b <= a;
 342                 if (!val)
 343                         return result;
 344                 result++;
 345
 346                 val = b >= a;
 347                 if (val)
 348                         return result;
 349                 result++;
 350
 351                 val = a == b;
 352                 if (val)
 353                         return result;
 354                 result++;
 355
 356                 val = a < b;
 357                 if (val)
 358                         return result;
 359                 result++;
 360
 361                 val = a > b;
 362                 if (!val)
 363                         return result;
 364                 result++;
 365
 366                 val = a <= b;
 367                 if (val)
 368                         return result;
 369                 result++;
 370
 371                 val = a >= b;
 372                 if (!val)
 373                         return result;
 374                 result++;
 375
 376                 return result;
 377         }
 378
 379         public static int test_15_float_cmp_un () {
 380                 double a = Double.NaN;
 381                 double b = 1.0;
 382                 int result = 0;
 383                 bool val;
 384
 385                 val = a == a;
 386                 if (val)
 387                         return result;
 388                 result++;
 389
 390                 val = a < a;
 391                 if (val)
 392                         return result;
 393                 result++;
 394
 395                 val = a > a;
 396                 if (val)
 397                         return result;
 398                 result++;
 399
 400                 val = a <= a;
 401                 if (val)
 402                         return result;
 403                 result++;
 404
 405                 val = a >= a;
 406                 if (val)
 407                         return result;
 408                 result++;
 409
 410                 val = b == a;
 411                 if (val)
 412                         return result;
 413                 result++;
 414
 415                 val = b < a;
 416                 if (val)
 417                         return result;
 418                 result++;
 419
 420                 val = b > a;
 421                 if (val)
 422                         return result;
 423                 result++;
 424
 425                 val = b <= a;
 426                 if (val)
 427                         return result;
 428                 result++;
 429
 430                 val = b >= a;
 431                 if (val)
 432                         return result;
 433                 result++;
 434
 435                 val = a == b;
 436                 if (val)
 437                         return result;
 438                 result++;
 439
 440                 val = a < b;
 441                 if (val)
 442                         return result;
 443                 result++;
 444
 445                 val = a > b;
 446                 if (val)
 447                         return result;
 448                 result++;
 449
 450                 val = a <= b;
 451                 if (val)
 452                         return result;
 453                 result++;
 454
 455                 val = a >= b;
 456                 if (val)
 457                         return result;
 458                 result++;
 459
 460                 return result;
 461         }
 462
 463         public static int test_15_float_branch () {
 464                 double a = 2.0;
 465                 double b = 1.0;
 466                 int result = 0;
 467
 468                 if (!(a == a))
 469                         return result;
 470                 result++;
 471
 472                 if (a < a)
 473                         return result;
 474                 result++;
 475
 476                 if (a > a)
 477                         return result;
 478                 result++;
 479
 480                 if (!(a <= a))
 481                         return result;
 482                 result++;
 483
 484                 if (!(a >= a))
 485                         return result;
 486                 result++;
 487
 488                 if (b == a)
 489                         return result;
 490                 result++;
 491
 492                 if (!(b < a))
 493                         return result;
 494                 result++;
 495
 496                 if (b > a)
 497                         return result;
 498                 result++;
 499
 500                 if (!(b <= a))
 501                         return result;
 502                 result++;
 503
 504                 if (b >= a)
 505                         return result;
 506                 result++;
 507
 508                 if (a == b)
 509                         return result;
 510                 result++;
 511
 512                 if (a < b)
 513                         return result;
 514                 result++;
 515
 516                 if (!(a > b))
 517                         return result;
 518                 result++;
 519
 520                 if (a <= b)
 521                         return result;
 522                 result++;
 523
 524                 if (!(a >= b))
 525                         return result;
 526                 result++;
 527
 528                 return result;
 529         }
 530
 531         public static int test_15_float_branch_un () {
 532                 double a = Double.NaN;
 533                 double b = 1.0;
 534                 int result = 0;
 535
 536                 if (a == a)
 537                         return result;
 538                 result++;
 539
 540                 if (a < a)
 541                         return result;
 542                 result++;
 543
 544                 if (a > a)
 545                         return result;
 546                 result++;
 547
 548                 if (a <= a)
 549                         return result;
 550                 result++;
 551
 552                 if (a >= a)
 553                         return result;
 554                 result++;
 555
 556                 if (b == a)
 557                         return result;
 558                 result++;
 559
 560                 if (b < a)
 561                         return result;
 562                 result++;
 563
 564                 if (b > a)
 565                         return result;
 566                 result++;
 567
 568                 if (b <= a)
 569                         return result;
 570                 result++;
 571
 572                 if (b >= a)
 573                         return result;
 574                 result++;
 575
 576                 if (a == b)
 577                         return result;
 578                 result++;
 579
 580                 if (a < b)
 581                         return result;
 582                 result++;
 583
 584                 if (a > b)
 585                         return result;
 586                 result++;
 587
 588                 if (a <= b)
 589                         return result;
 590                 result++;
 591
 592                 if (a >= b)
 593                         return result;
 594                 result++;
 595
 596                 return result;
 597         }
 598
 599         public static int test_0_float_precision () {
 600                 float f1 = 3.40282346638528859E+38f;
 601                 float f2 = 3.40282346638528859E+38f;
 602                 float PositiveInfinity =  1.0f / 0.0f;
 603                 float f = f1 + f2;
 604
 605                 return f == PositiveInfinity ? 0 : 1;
 606         }
 607
 608         /*
 609            Disabled until they can be fixed to run on amd64
 610
 611         static double VALUE = 0.19975845134874831D;
 612
 613         public static int test_0_float_conversion_reduces_double_precision () {
 614                 double d = (float)VALUE;
 615                 if (d != 0.19975845515727997d)
 616                         return 1;
 617
 618                 return 0;
 619         }
 620
 621
 622     public static int test_0_long_to_double_conversion ()
 623     {
 624                 long l = 9223372036854775807L;
 625                 long conv = (long)((double)l);
 626                 if (conv != -9223372036854775808L)
 627                         return 1;
 628
 629                 return 0;
 630     }
 631
 632         public static int INT_VAL = 0x13456799;
 633
 634         public static int test_0_int4_to_float_convertion ()
 635     {
 636                 double d = (double)(float)INT_VAL;
 637
 638                 if (d != 323315616)
 639                         return 1;
 640                 return 0;
 641         }
 642         */
 643 }
 644