sys/external/bsd/compiler_rt/dist/test/Unit/ffsti2_test.c

   1 //===-- ffsti2_test.c - Test __ffsti2 -------------------------------------===//
   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 __ffsti2 for the compiler_rt library.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #if __x86_64
  15
  16 #include "int_lib.h"
  17 #include <stdio.h>
  18
  19 // Returns: the index of the least significant 1-bit in a, or
  20 // the value zero if a is zero. The least significant bit is index one.
  21
  22 si_int __ffsti2(ti_int a);
  23
  24 int test__ffsti2(ti_int a, si_int expected)
  25 {
  26     si_int x = __ffsti2(a);
  27     if (x != expected)
  28     {
  29         twords at;
  30         at.all = a;
  31         printf("error in __ffsti2(0x%llX%.16llX) = %d, expected %d\n",
  32                at.s.high, at.s.low, x, expected);
  33     }
  34     return x != expected;
  35 }
  36
  37 char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0};
  38
  39 #endif
  40
  41 int main()
  42 {
  43 #if __x86_64
  44     if (test__ffsti2(0x00000000, 0))
  45         return 1;
  46     if (test__ffsti2(0x00000001, 1))
  47         return 1;
  48     if (test__ffsti2(0x00000002, 2))
  49         return 1;
  50     if (test__ffsti2(0x00000003, 1))
  51         return 1;
  52     if (test__ffsti2(0x00000004, 3))
  53         return 1;
  54     if (test__ffsti2(0x00000005, 1))
  55         return 1;
  56     if (test__ffsti2(0x0000000A, 2))
  57         return 1;
  58     if (test__ffsti2(0x10000000, 29))
  59         return 1;
  60     if (test__ffsti2(0x20000000, 30))
  61         return 1;
  62     if (test__ffsti2(0x60000000, 30))
  63         return 1;
  64     if (test__ffsti2(0x80000000uLL, 32))
  65         return 1;
  66     if (test__ffsti2(0x0000050000000000uLL, 41))
  67         return 1;
  68     if (test__ffsti2(0x0200080000000000uLL, 44))
  69         return 1;
  70     if (test__ffsti2(0x7200000000000000uLL, 58))
  71         return 1;
  72     if (test__ffsti2(0x8000000000000000uLL, 64))
  73         return 1;
  74     if (test__ffsti2(make_ti(0x8000000800000000uLL, 0), 100))
  75         return 1;
  76     if (test__ffsti2(make_ti(0x8000000000000000uLL, 0), 128))
  77         return 1;
  78
  79 #else
  80     printf("skipped\n");
  81 #endif
  82    return 0;
  83 }