compiler-rt/test/builtins/Unit/udivti3_test.c

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_udivti3
   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 __udivti3(tu_int a, tu_int b);
  13
  14 int test__udivti3(tu_int a, tu_int b, tu_int expected_q)
  15 {
  16     tu_int q = __udivti3(a, b);
  17     if (q != expected_q)
  18     {
  19         utwords at;
  20         at.all = a;
  21         utwords bt;
  22         bt.all = b;
  23         utwords qt;
  24         qt.all = q;
  25         utwords expected_qt;
  26         expected_qt.all = expected_q;
  27         printf("error in __udivti3: 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, qt.s.high, qt.s.low,
  30                expected_qt.s.high, expected_qt.s.low);
  31     }
  32     return q != expected_q;
  33 }
  34
  35 #endif
  36
  37 int main()
  38 {
  39 #ifdef CRT_HAS_128BIT
  40     if (test__udivti3(0, 1, 0))
  41         return 1;
  42     if (test__udivti3(2, 1, 2))
  43         return 1;
  44     if (test__udivti3(make_tu(0x8000000000000000uLL, 0), 1,
  45                       make_tu(0x8000000000000000uLL, 0)))
  46         return 1;
  47     if (test__udivti3(make_tu(0x8000000000000000uLL, 0), 2,
  48                       make_tu(0x4000000000000000uLL, 0)))
  49         return 1;
  50     if (test__udivti3(make_tu(0xFFFFFFFFFFFFFFFFuLL, 0xFFFFFFFFFFFFFFFFuLL), 2,
  51                       make_tu(0x7FFFFFFFFFFFFFFFuLL, 0xFFFFFFFFFFFFFFFFuLL)))
  52         return 1;
  53
  54 #else
  55     printf("skipped\n");
  56 #endif
  57     return 0;
  58 }