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

   1 //===-- udivti3_test.c - Test __udivti3 -----------------------------------===//
   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 __udivti3 for the compiler_rt library.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "int_lib.h"
  15 #include <stdio.h>
  16
  17 #ifdef CRT_HAS_128BIT
  18
  19 // Returns: a / b
  20
  21 COMPILER_RT_ABI tu_int __udivti3(tu_int a, tu_int b);
  22
  23 int test__udivti3(tu_int a, tu_int b, tu_int expected_q)
  24 {
  25     tu_int q = __udivti3(a, b);
  26     if (q != expected_q)
  27     {
  28         utwords at;
  29         at.all = a;
  30         utwords bt;
  31         bt.all = b;
  32         utwords qt;
  33         qt.all = q;
  34         utwords expected_qt;
  35         expected_qt.all = expected_q;
  36         printf("error in __udivti3: 0x%llX%.16llX / 0x%llX%.16llX = "
  37                "0x%llX%.16llX, expected 0x%llX%.16llX\n",
  38                at.s.high, at.s.low, bt.s.high, bt.s.low, qt.s.high, qt.s.low,
  39                expected_qt.s.high, expected_qt.s.low);
  40     }
  41     return q != expected_q;
  42 }
  43
  44 #endif
  45
  46 int main()
  47 {
  48 #ifdef CRT_HAS_128BIT
  49     if (test__udivti3(0, 1, 0))
  50         return 1;
  51     if (test__udivti3(2, 1, 2))
  52         return 1;
  53     if (test__udivti3(make_tu(0x8000000000000000uLL, 0), 1,
  54                       make_tu(0x8000000000000000uLL, 0)))
  55         return 1;
  56     if (test__udivti3(make_tu(0x8000000000000000uLL, 0), 2,
  57                       make_tu(0x4000000000000000uLL, 0)))
  58         return 1;
  59     if (test__udivti3(make_tu(0xFFFFFFFFFFFFFFFFuLL, 0xFFFFFFFFFFFFFFFFuLL), 2,
  60                       make_tu(0x7FFFFFFFFFFFFFFFuLL, 0xFFFFFFFFFFFFFFFFuLL)))
  61         return 1;
  62
  63 #else
  64     printf("skipped\n");
  65 #endif
  66     return 0;
  67 }