compiler-rt/test/builtins/Unit/umodti3_test.c

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_umodti3
   3 // REQUIRES: int128
   4
   5 #include "int_lib.h"
   6 #include <stdio.h>
   7
   8 #ifdef CRT_HAS_128BIT
   9
  10 // Returns: a % b
  11
  12 COMPILER_RT_ABI tu_int __umodti3(tu_int a, tu_int b);
  13
  14 int test__umodti3(tu_int a, tu_int b, tu_int expected_r)
  15 {
  16     tu_int r = __umodti3(a, b);
  17     if (r != expected_r)
  18     {
  19         utwords at;
  20         at.all = a;
  21         utwords bt;
  22         bt.all = b;
  23         utwords rt;
  24         rt.all = r;
  25         utwords expected_rt;
  26         expected_rt.all = expected_r;
  27         printf("error in __umodti3: 0x%llX%.16llX %% 0x%llX%.16llX = "
  28                "0x%llX%.16llX, expected 0x%llX%.16llX\n",
  29                at.s.high, at.s.low, bt.s.high, bt.s.low, rt.s.high, rt.s.low,
  30                expected_rt.s.high, expected_rt.s.low);
  31     }
  32     return r != expected_r;
  33 }
  34
  35 #endif
  36
  37 int main()
  38 {
  39 #ifdef CRT_HAS_128BIT
  40     if (test__umodti3(0, 1, 0))
  41         return 1;
  42     if (test__umodti3(2, 1, 0))
  43         return 1;
  44     if (test__umodti3(make_tu(0x8000000000000000uLL, 0), 1, 0x0uLL))
  45         return 1;
  46     if (test__umodti3(make_tu(0x8000000000000000uLL, 0), 2, 0x0uLL))
  47         return 1;
  48     if (test__umodti3(make_tu(0xFFFFFFFFFFFFFFFFuLL, 0xFFFFFFFFFFFFFFFFuLL),
  49                       2, 0x1uLL))
  50         return 1;
  51
  52 #else
  53     printf("skipped\n");
  54 #endif
  55     return 0;
  56 }