compiler-rt/test/builtins/Unit/divti3_test.c

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_divti3
   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 ti_int __divti3(ti_int a, ti_int b);
  13
  14 int test__divti3(ti_int a, ti_int b, ti_int expected)
  15 {
  16     ti_int x = __divti3(a, b);
  17     if (x != expected)
  18     {
  19         twords at;
  20         at.all = a;
  21         twords bt;
  22         bt.all = b;
  23         twords xt;
  24         xt.all = x;
  25         twords expectedt;
  26         expectedt.all = expected;
  27         printf("error in __divti3: 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, xt.s.high, xt.s.low,
  30                expectedt.s.high, expectedt.s.low);
  31     }
  32     return x != expected;
  33 }
  34
  35 char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0};
  36
  37 #endif
  38
  39 int main()
  40 {
  41 #ifdef CRT_HAS_128BIT
  42     if (test__divti3(0, 1, 0))
  43         return 1;
  44     if (test__divti3(0, -1, 0))
  45         return 1;
  46
  47     if (test__divti3(2, 1, 2))
  48         return 1;
  49     if (test__divti3(2, -1, -2))
  50         return 1;
  51     if (test__divti3(-2, 1, -2))
  52         return 1;
  53     if (test__divti3(-2, -1, 2))
  54         return 1;
  55
  56     if (test__divti3(make_ti(0x8000000000000000LL, 0), 1, make_ti(0x8000000000000000LL, 0)))
  57         return 1;
  58     if (test__divti3(make_ti(0x8000000000000000LL, 0), -1, make_ti(0x8000000000000000LL, 0)))
  59         return 1;
  60     if (test__divti3(make_ti(0x8000000000000000LL, 0), -2, make_ti(0x4000000000000000LL, 0)))
  61         return 1;
  62     if (test__divti3(make_ti(0x8000000000000000LL, 0), 2, make_ti(0xC000000000000000LL, 0)))
  63         return 1;
  64
  65 #else
  66     printf("skipped\n");
  67 #endif
  68     return 0;
  69 }