sys/external/bsd/compiler_rt/dist/test/Unit/ctzdi2_test.c

   1 //===-- ctzdi2_test.c - Test __ctzdi2 -------------------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is dual licensed under the MIT and the University of Illinois Open
   6 // Source Licenses. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file tests __ctzdi2 for the compiler_rt library.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "int_lib.h"
  15 #include <stdio.h>
  16
  17 // Returns: the number of trailing 0-bits
  18
  19 // Precondition: a != 0
  20
  21 si_int __ctzdi2(di_int a);
  22
  23 int test__ctzdi2(di_int a, si_int expected)
  24 {
  25     si_int x = __ctzdi2(a);
  26     if (x != expected)
  27         printf("error in __ctzdi2(0x%llX) = %d, expected %d\n", a, x, expected);
  28     return x != expected;
  29 }
  30
  31 char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
  32
  33 int main()
  34 {
  35 //    if (test__ctzdi2(0x00000000, N))  // undefined
  36 //        return 1;
  37     if (test__ctzdi2(0x00000001, 0))
  38         return 1;
  39     if (test__ctzdi2(0x00000002, 1))
  40         return 1;
  41     if (test__ctzdi2(0x00000003, 0))
  42         return 1;
  43     if (test__ctzdi2(0x00000004, 2))
  44         return 1;
  45     if (test__ctzdi2(0x00000005, 0))
  46         return 1;
  47     if (test__ctzdi2(0x0000000A, 1))
  48         return 1;
  49     if (test__ctzdi2(0x10000000, 28))
  50         return 1;
  51     if (test__ctzdi2(0x20000000, 29))
  52         return 1;
  53     if (test__ctzdi2(0x60000000, 29))
  54         return 1;
  55     if (test__ctzdi2(0x80000000uLL, 31))
  56         return 1;
  57     if (test__ctzdi2(0x0000050000000000uLL, 40))
  58         return 1;
  59     if (test__ctzdi2(0x0200080000000000uLL, 43))
  60         return 1;
  61     if (test__ctzdi2(0x7200000000000000uLL, 57))
  62         return 1;
  63     if (test__ctzdi2(0x8000000000000000uLL, 63))
  64         return 1;
  65
  66    return 0;
  67 }