compiler-rt/test/builtins/Unit/ctzsi2_test.c

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_ctzsi2
   3 //===-- ctzsi2_test.c - Test __ctzsi2 -------------------------------------===//
   4 //
   5 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   6 // See https://llvm.org/LICENSE.txt for license information.
   7 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   8 //
   9 //===----------------------------------------------------------------------===//
  10 //
  11 // This file tests __ctzsi2 for the compiler_rt library.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #include "int_lib.h"
  16 #include <stdio.h>
  17
  18 // Returns: the number of trailing 0-bits
  19
  20 // Precondition: a != 0
  21
  22 COMPILER_RT_ABI si_int __ctzsi2(si_int a);
  23
  24 int test__ctzsi2(si_int a, si_int expected)
  25 {
  26     si_int x = __ctzsi2(a);
  27     if (x != expected)
  28         printf("error in __ctzsi2(0x%X) = %d, expected %d\n", a, x, expected);
  29     return x != expected;
  30 }
  31
  32 char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
  33 char assumption_2[sizeof(si_int)*CHAR_BIT == 32] = {0};
  34
  35 int main()
  36 {
  37 //     if (test__ctzsi2(0x00000000, 32))  // undefined
  38 //         return 1;
  39     if (test__ctzsi2(0x00000001, 0))
  40         return 1;
  41     if (test__ctzsi2(0x00000002, 1))
  42         return 1;
  43     if (test__ctzsi2(0x00000003, 0))
  44         return 1;
  45     if (test__ctzsi2(0x00000004, 2))
  46         return 1;
  47     if (test__ctzsi2(0x00000005, 0))
  48         return 1;
  49     if (test__ctzsi2(0x00000006, 1))
  50         return 1;
  51     if (test__ctzsi2(0x00000007, 0))
  52         return 1;
  53     if (test__ctzsi2(0x00000008, 3))
  54         return 1;
  55     if (test__ctzsi2(0x00000009, 0))
  56         return 1;
  57     if (test__ctzsi2(0x0000000A, 1))
  58         return 1;
  59     if (test__ctzsi2(0x0000000B, 0))
  60         return 1;
  61     if (test__ctzsi2(0x0000000C, 2))
  62         return 1;
  63     if (test__ctzsi2(0x0000000D, 0))
  64         return 1;
  65     if (test__ctzsi2(0x0000000E, 1))
  66         return 1;
  67     if (test__ctzsi2(0x0000000F, 0))
  68         return 1;
  69     if (test__ctzsi2(0x00000010, 4))
  70         return 1;
  71     if (test__ctzsi2(0x00000012, 1))
  72         return 1;
  73     if (test__ctzsi2(0x00000013, 0))
  74         return 1;
  75     if (test__ctzsi2(0x00000014, 2))
  76         return 1;
  77     if (test__ctzsi2(0x00000015, 0))
  78         return 1;
  79     if (test__ctzsi2(0x00000016, 1))
  80         return 1;
  81     if (test__ctzsi2(0x00000017, 0))
  82         return 1;
  83     if (test__ctzsi2(0x00000018, 3))
  84         return 1;
  85     if (test__ctzsi2(0x00000019, 0))
  86         return 1;
  87     if (test__ctzsi2(0x0000001A, 1))
  88         return 1;
  89     if (test__ctzsi2(0x0000001B, 0))
  90         return 1;
  91     if (test__ctzsi2(0x0000001C, 2))
  92         return 1;
  93     if (test__ctzsi2(0x0000001D, 0))
  94         return 1;
  95     if (test__ctzsi2(0x0000001E, 1))
  96         return 1;
  97     if (test__ctzsi2(0x0000001F, 0))
  98         return 1;
  99     if (test__ctzsi2(0x00000020, 5))
 100         return 1;
 101     if (test__ctzsi2(0x00000022, 1))
 102         return 1;
 103     if (test__ctzsi2(0x00000023, 0))
 104         return 1;
 105     if (test__ctzsi2(0x00000024, 2))
 106         return 1;
 107     if (test__ctzsi2(0x00000025, 0))
 108         return 1;
 109     if (test__ctzsi2(0x00000026, 1))
 110         return 1;
 111     if (test__ctzsi2(0x00000027, 0))
 112         return 1;
 113     if (test__ctzsi2(0x00000028, 3))
 114         return 1;
 115     if (test__ctzsi2(0x00000029, 0))
 116         return 1;
 117     if (test__ctzsi2(0x0000002A, 1))
 118         return 1;
 119     if (test__ctzsi2(0x0000002B, 0))
 120         return 1;
 121     if (test__ctzsi2(0x0000002C, 2))
 122         return 1;
 123     if (test__ctzsi2(0x0000002D, 0))
 124         return 1;
 125     if (test__ctzsi2(0x0000002E, 1))
 126         return 1;
 127     if (test__ctzsi2(0x0000002F, 0))
 128         return 1;
 129     if (test__ctzsi2(0x00000030, 4))
 130         return 1;
 131     if (test__ctzsi2(0x00000032, 1))
 132         return 1;
 133     if (test__ctzsi2(0x00000033, 0))
 134         return 1;
 135     if (test__ctzsi2(0x00000034, 2))
 136         return 1;
 137     if (test__ctzsi2(0x00000035, 0))
 138         return 1;
 139     if (test__ctzsi2(0x00000036, 1))
 140         return 1;
 141     if (test__ctzsi2(0x00000037, 0))
 142         return 1;
 143     if (test__ctzsi2(0x00000038, 3))
 144         return 1;
 145     if (test__ctzsi2(0x00000039, 0))
 146         return 1;
 147     if (test__ctzsi2(0x0000003A, 1))
 148         return 1;
 149     if (test__ctzsi2(0x0000003B, 0))
 150         return 1;
 151     if (test__ctzsi2(0x0000003C, 2))
 152         return 1;
 153     if (test__ctzsi2(0x0000003D, 0))
 154         return 1;
 155     if (test__ctzsi2(0x0000003E, 1))
 156         return 1;
 157     if (test__ctzsi2(0x0000003F, 0))
 158         return 1;
 159     if (test__ctzsi2(0x00000040, 6))
 160         return 1;
 161     if (test__ctzsi2(0x00000042, 1))
 162         return 1;
 163     if (test__ctzsi2(0x00000043, 0))
 164         return 1;
 165     if (test__ctzsi2(0x00000044, 2))
 166         return 1;
 167     if (test__ctzsi2(0x00000045, 0))
 168         return 1;
 169     if (test__ctzsi2(0x00000046, 1))
 170         return 1;
 171     if (test__ctzsi2(0x00000047, 0))
 172         return 1;
 173     if (test__ctzsi2(0x00000048, 3))
 174         return 1;
 175     if (test__ctzsi2(0x00000049, 0))
 176         return 1;
 177     if (test__ctzsi2(0x0000004A, 1))
 178         return 1;
 179     if (test__ctzsi2(0x0000004B, 0))
 180         return 1;
 181     if (test__ctzsi2(0x0000004C, 2))
 182         return 1;
 183     if (test__ctzsi2(0x0000004D, 0))
 184         return 1;
 185     if (test__ctzsi2(0x0000004E, 1))
 186         return 1;
 187     if (test__ctzsi2(0x0000004F, 0))
 188         return 1;
 189     if (test__ctzsi2(0x00000050, 4))
 190         return 1;
 191     if (test__ctzsi2(0x00000052, 1))
 192         return 1;
 193     if (test__ctzsi2(0x00000053, 0))
 194         return 1;
 195     if (test__ctzsi2(0x00000054, 2))
 196         return 1;
 197     if (test__ctzsi2(0x00000055, 0))
 198         return 1;
 199     if (test__ctzsi2(0x00000056, 1))
 200         return 1;
 201     if (test__ctzsi2(0x00000057, 0))
 202         return 1;
 203     if (test__ctzsi2(0x00000058, 3))
 204         return 1;
 205     if (test__ctzsi2(0x00000059, 0))
 206         return 1;
 207     if (test__ctzsi2(0x0000005A, 1))
 208         return 1;
 209     if (test__ctzsi2(0x0000005B, 0))
 210         return 1;
 211     if (test__ctzsi2(0x0000005C, 2))
 212         return 1;
 213     if (test__ctzsi2(0x0000005D, 0))
 214         return 1;
 215     if (test__ctzsi2(0x0000005E, 1))
 216         return 1;
 217     if (test__ctzsi2(0x0000005F, 0))
 218         return 1;
 219     if (test__ctzsi2(0x00000060, 5))
 220         return 1;
 221     if (test__ctzsi2(0x00000062, 1))
 222         return 1;
 223     if (test__ctzsi2(0x00000063, 0))
 224         return 1;
 225     if (test__ctzsi2(0x00000064, 2))
 226         return 1;
 227     if (test__ctzsi2(0x00000065, 0))
 228         return 1;
 229     if (test__ctzsi2(0x00000066, 1))
 230         return 1;
 231     if (test__ctzsi2(0x00000067, 0))
 232         return 1;
 233     if (test__ctzsi2(0x00000068, 3))
 234         return 1;
 235     if (test__ctzsi2(0x00000069, 0))
 236         return 1;
 237     if (test__ctzsi2(0x0000006A, 1))
 238         return 1;
 239     if (test__ctzsi2(0x0000006B, 0))
 240         return 1;
 241     if (test__ctzsi2(0x0000006C, 2))
 242         return 1;
 243     if (test__ctzsi2(0x0000006D, 0))
 244         return 1;
 245     if (test__ctzsi2(0x0000006E, 1))
 246         return 1;
 247     if (test__ctzsi2(0x0000006F, 0))
 248         return 1;
 249     if (test__ctzsi2(0x00000070, 4))
 250         return 1;
 251     if (test__ctzsi2(0x00000072, 1))
 252         return 1;
 253     if (test__ctzsi2(0x00000073, 0))
 254         return 1;
 255     if (test__ctzsi2(0x00000074, 2))
 256         return 1;
 257     if (test__ctzsi2(0x00000075, 0))
 258         return 1;
 259     if (test__ctzsi2(0x00000076, 1))
 260         return 1;
 261     if (test__ctzsi2(0x00000077, 0))
 262         return 1;
 263     if (test__ctzsi2(0x00000078, 3))
 264         return 1;
 265     if (test__ctzsi2(0x00000079, 0))
 266         return 1;
 267     if (test__ctzsi2(0x0000007A, 1))
 268         return 1;
 269     if (test__ctzsi2(0x0000007B, 0))
 270         return 1;
 271     if (test__ctzsi2(0x0000007C, 2))
 272         return 1;
 273     if (test__ctzsi2(0x0000007D, 0))
 274         return 1;
 275     if (test__ctzsi2(0x0000007E, 1))
 276         return 1;
 277     if (test__ctzsi2(0x0000007F, 0))
 278         return 1;
 279     if (test__ctzsi2(0x00000080, 7))
 280         return 1;
 281     if (test__ctzsi2(0x00000082, 1))
 282         return 1;
 283     if (test__ctzsi2(0x00000083, 0))
 284         return 1;
 285     if (test__ctzsi2(0x00000084, 2))
 286         return 1;
 287     if (test__ctzsi2(0x00000085, 0))
 288         return 1;
 289     if (test__ctzsi2(0x00000086, 1))
 290         return 1;
 291     if (test__ctzsi2(0x00000087, 0))
 292         return 1;
 293     if (test__ctzsi2(0x00000088, 3))
 294         return 1;
 295     if (test__ctzsi2(0x00000089, 0))
 296         return 1;
 297     if (test__ctzsi2(0x0000008A, 1))
 298         return 1;
 299     if (test__ctzsi2(0x0000008B, 0))
 300         return 1;
 301     if (test__ctzsi2(0x0000008C, 2))
 302         return 1;
 303     if (test__ctzsi2(0x0000008D, 0))
 304         return 1;
 305     if (test__ctzsi2(0x0000008E, 1))
 306         return 1;
 307     if (test__ctzsi2(0x0000008F, 0))
 308         return 1;
 309     if (test__ctzsi2(0x00000090, 4))
 310         return 1;
 311     if (test__ctzsi2(0x00000092, 1))
 312         return 1;
 313     if (test__ctzsi2(0x00000093, 0))
 314         return 1;
 315     if (test__ctzsi2(0x00000094, 2))
 316         return 1;
 317     if (test__ctzsi2(0x00000095, 0))
 318         return 1;
 319     if (test__ctzsi2(0x00000096, 1))
 320         return 1;
 321     if (test__ctzsi2(0x00000097, 0))
 322         return 1;
 323     if (test__ctzsi2(0x00000098, 3))
 324         return 1;
 325     if (test__ctzsi2(0x00000099, 0))
 326         return 1;
 327     if (test__ctzsi2(0x0000009A, 1))
 328         return 1;
 329     if (test__ctzsi2(0x0000009B, 0))
 330         return 1;
 331     if (test__ctzsi2(0x0000009C, 2))
 332         return 1;
 333     if (test__ctzsi2(0x0000009D, 0))
 334         return 1;
 335     if (test__ctzsi2(0x0000009E, 1))
 336         return 1;
 337     if (test__ctzsi2(0x0000009F, 0))
 338         return 1;
 339     if (test__ctzsi2(0x000000A0, 5))
 340         return 1;
 341     if (test__ctzsi2(0x000000A2, 1))
 342         return 1;
 343     if (test__ctzsi2(0x000000A3, 0))
 344         return 1;
 345     if (test__ctzsi2(0x000000A4, 2))
 346         return 1;
 347     if (test__ctzsi2(0x000000A5, 0))
 348         return 1;
 349     if (test__ctzsi2(0x000000A6, 1))
 350         return 1;
 351     if (test__ctzsi2(0x000000A7, 0))
 352         return 1;
 353     if (test__ctzsi2(0x000000A8, 3))
 354         return 1;
 355     if (test__ctzsi2(0x000000A9, 0))
 356         return 1;
 357     if (test__ctzsi2(0x000000AA, 1))
 358         return 1;
 359     if (test__ctzsi2(0x000000AB, 0))
 360         return 1;
 361     if (test__ctzsi2(0x000000AC, 2))
 362         return 1;
 363     if (test__ctzsi2(0x000000AD, 0))
 364         return 1;
 365     if (test__ctzsi2(0x000000AE, 1))
 366         return 1;
 367     if (test__ctzsi2(0x000000AF, 0))
 368         return 1;
 369     if (test__ctzsi2(0x000000B0, 4))
 370         return 1;
 371     if (test__ctzsi2(0x000000B2, 1))
 372         return 1;
 373     if (test__ctzsi2(0x000000B3, 0))
 374         return 1;
 375     if (test__ctzsi2(0x000000B4, 2))
 376         return 1;
 377     if (test__ctzsi2(0x000000B5, 0))
 378         return 1;
 379     if (test__ctzsi2(0x000000B6, 1))
 380         return 1;
 381     if (test__ctzsi2(0x000000B7, 0))
 382         return 1;
 383     if (test__ctzsi2(0x000000B8, 3))
 384         return 1;
 385     if (test__ctzsi2(0x000000B9, 0))
 386         return 1;
 387     if (test__ctzsi2(0x000000BA, 1))
 388         return 1;
 389     if (test__ctzsi2(0x000000BB, 0))
 390         return 1;
 391     if (test__ctzsi2(0x000000BC, 2))
 392         return 1;
 393     if (test__ctzsi2(0x000000BD, 0))
 394         return 1;
 395     if (test__ctzsi2(0x000000BE, 1))
 396         return 1;
 397     if (test__ctzsi2(0x000000BF, 0))
 398         return 1;
 399     if (test__ctzsi2(0x000000C0, 6))
 400         return 1;
 401     if (test__ctzsi2(0x000000C2, 1))
 402         return 1;
 403     if (test__ctzsi2(0x000000C3, 0))
 404         return 1;
 405     if (test__ctzsi2(0x000000C4, 2))
 406         return 1;
 407     if (test__ctzsi2(0x000000C5, 0))
 408         return 1;
 409     if (test__ctzsi2(0x000000C6, 1))
 410         return 1;
 411     if (test__ctzsi2(0x000000C7, 0))
 412         return 1;
 413     if (test__ctzsi2(0x000000C8, 3))
 414         return 1;
 415     if (test__ctzsi2(0x000000C9, 0))
 416         return 1;
 417     if (test__ctzsi2(0x000000CA, 1))
 418         return 1;
 419     if (test__ctzsi2(0x000000CB, 0))
 420         return 1;
 421     if (test__ctzsi2(0x000000CC, 2))
 422         return 1;
 423     if (test__ctzsi2(0x000000CD, 0))
 424         return 1;
 425     if (test__ctzsi2(0x000000CE, 1))
 426         return 1;
 427     if (test__ctzsi2(0x000000CF, 0))
 428         return 1;
 429     if (test__ctzsi2(0x000000D0, 4))
 430         return 1;
 431     if (test__ctzsi2(0x000000D2, 1))
 432         return 1;
 433     if (test__ctzsi2(0x000000D3, 0))
 434         return 1;
 435     if (test__ctzsi2(0x000000D4, 2))
 436         return 1;
 437     if (test__ctzsi2(0x000000D5, 0))
 438         return 1;
 439     if (test__ctzsi2(0x000000D6, 1))
 440         return 1;
 441     if (test__ctzsi2(0x000000D7, 0))
 442         return 1;
 443     if (test__ctzsi2(0x000000D8, 3))
 444         return 1;
 445     if (test__ctzsi2(0x000000D9, 0))
 446         return 1;
 447     if (test__ctzsi2(0x000000DA, 1))
 448         return 1;
 449     if (test__ctzsi2(0x000000DB, 0))
 450         return 1;
 451     if (test__ctzsi2(0x000000DC, 2))
 452         return 1;
 453     if (test__ctzsi2(0x000000DD, 0))
 454         return 1;
 455     if (test__ctzsi2(0x000000DE, 1))
 456         return 1;
 457     if (test__ctzsi2(0x000000DF, 0))
 458         return 1;
 459     if (test__ctzsi2(0x000000E0, 5))
 460         return 1;
 461     if (test__ctzsi2(0x000000E2, 1))
 462         return 1;
 463     if (test__ctzsi2(0x000000E3, 0))
 464         return 1;
 465     if (test__ctzsi2(0x000000E4, 2))
 466         return 1;
 467     if (test__ctzsi2(0x000000E5, 0))
 468         return 1;
 469     if (test__ctzsi2(0x000000E6, 1))
 470         return 1;
 471     if (test__ctzsi2(0x000000E7, 0))
 472         return 1;
 473     if (test__ctzsi2(0x000000E8, 3))
 474         return 1;
 475     if (test__ctzsi2(0x000000E9, 0))
 476         return 1;
 477     if (test__ctzsi2(0x000000EA, 1))
 478         return 1;
 479     if (test__ctzsi2(0x000000EB, 0))
 480         return 1;
 481     if (test__ctzsi2(0x000000EC, 2))
 482         return 1;
 483     if (test__ctzsi2(0x000000ED, 0))
 484         return 1;
 485     if (test__ctzsi2(0x000000EE, 1))
 486         return 1;
 487     if (test__ctzsi2(0x000000EF, 0))
 488         return 1;
 489     if (test__ctzsi2(0x000000F0, 4))
 490         return 1;
 491     if (test__ctzsi2(0x000000F2, 1))
 492         return 1;
 493     if (test__ctzsi2(0x000000F3, 0))
 494         return 1;
 495     if (test__ctzsi2(0x000000F4, 2))
 496         return 1;
 497     if (test__ctzsi2(0x000000F5, 0))
 498         return 1;
 499     if (test__ctzsi2(0x000000F6, 1))
 500         return 1;
 501     if (test__ctzsi2(0x000000F7, 0))
 502         return 1;
 503     if (test__ctzsi2(0x000000F8, 3))
 504         return 1;
 505     if (test__ctzsi2(0x000000F9, 0))
 506         return 1;
 507     if (test__ctzsi2(0x000000FA, 1))
 508         return 1;
 509     if (test__ctzsi2(0x000000FB, 0))
 510         return 1;
 511     if (test__ctzsi2(0x000000FC, 2))
 512         return 1;
 513     if (test__ctzsi2(0x000000FD, 0))
 514         return 1;
 515     if (test__ctzsi2(0x000000FE, 1))
 516         return 1;
 517     if (test__ctzsi2(0x000000FF, 0))
 518         return 1;
 519
 520     if (test__ctzsi2(0x00000100, 8))
 521         return 1;
 522     if (test__ctzsi2(0x00000200, 9))
 523         return 1;
 524     if (test__ctzsi2(0x00000400, 10))
 525         return 1;
 526     if (test__ctzsi2(0x00000800, 11))
 527         return 1;
 528     if (test__ctzsi2(0x00001000, 12))
 529         return 1;
 530     if (test__ctzsi2(0x00002000, 13))
 531         return 1;
 532     if (test__ctzsi2(0x00004000, 14))
 533         return 1;
 534     if (test__ctzsi2(0x00008000, 15))
 535         return 1;
 536     if (test__ctzsi2(0x00010000, 16))
 537         return 1;
 538     if (test__ctzsi2(0x00020000, 17))
 539         return 1;
 540     if (test__ctzsi2(0x00040000, 18))
 541         return 1;
 542     if (test__ctzsi2(0x00080000, 19))
 543         return 1;
 544     if (test__ctzsi2(0x00100000, 20))
 545         return 1;
 546     if (test__ctzsi2(0x00200000, 21))
 547         return 1;
 548     if (test__ctzsi2(0x00400000, 22))
 549         return 1;
 550     if (test__ctzsi2(0x00800000, 23))
 551         return 1;
 552     if (test__ctzsi2(0x01000000, 24))
 553         return 1;
 554     if (test__ctzsi2(0x02000000, 25))
 555         return 1;
 556     if (test__ctzsi2(0x04000000, 26))
 557         return 1;
 558     if (test__ctzsi2(0x08000000, 27))
 559         return 1;
 560     if (test__ctzsi2(0x10000000, 28))
 561         return 1;
 562     if (test__ctzsi2(0x20000000, 29))
 563         return 1;
 564     if (test__ctzsi2(0x40000000, 30))
 565         return 1;
 566     if (test__ctzsi2(0x80000000, 31))
 567         return 1;
 568
 569    return 0;
 570 }