compiler-rt/test/builtins/Unit/modti3_test.c

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_modti3
   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 __modti3(ti_int a, ti_int b);
  13
  14 int test__modti3(ti_int a, ti_int b, ti_int expected)
  15 {
  16     ti_int x = __modti3(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 __modti3: 0x%.16llX%.16llX %% 0x%.16llX%.16llX = "
  28                "0x%.16llX%.16llX, expected 0x%.16llX%.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__modti3(0, 1, 0))
  43         return 1;
  44     if (test__modti3(0, -1, 0))
  45         return 1;
  46
  47     if (test__modti3(5, 3, 2))
  48         return 1;
  49     if (test__modti3(5, -3, 2))
  50         return 1;
  51     if (test__modti3(-5, 3, -2))
  52         return 1;
  53     if (test__modti3(-5, -3, -2))
  54         return 1;
  55
  56     if (test__modti3(0x8000000000000000ULL, 1, 0x0LL))
  57         return 1;
  58     if (test__modti3(0x8000000000000000ULL, -1, 0x0LL))
  59         return 1;
  60     if (test__modti3(0x8000000000000000ULL, 2, 0x0LL))
  61         return 1;
  62     if (test__modti3(0x8000000000000000ULL, -2, 0x0LL))
  63         return 1;
  64     if (test__modti3(0x8000000000000000ULL, 3, 2))
  65         return 1;
  66     if (test__modti3(0x8000000000000000ULL, -3, 2))
  67         return 1;
  68
  69     if (test__modti3(make_ti(0x8000000000000000LL, 0), 1, 0x0LL))
  70         return 1;
  71     if (test__modti3(make_ti(0x8000000000000000LL, 0), -1, 0x0LL))
  72         return 1;
  73     if (test__modti3(make_ti(0x8000000000000000LL, 0), 2, 0x0LL))
  74         return 1;
  75     if (test__modti3(make_ti(0x8000000000000000LL, 0), -2, 0x0LL))
  76         return 1;
  77     if (test__modti3(make_ti(0x8000000000000000LL, 0), 3, -2))
  78         return 1;
  79     if (test__modti3(make_ti(0x8000000000000000LL, 0), -3, -2))
  80         return 1;
  81
  82 #else
  83     printf("skipped\n");
  84 #endif
  85     return 0;
  86 }