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 //===-- udivti3_test.c - Test __udivti3 -----------------------------------===//
   5 //
   6 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   7 // See https://llvm.org/LICENSE.txt for license information.
   8 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   9 //
  10 //===----------------------------------------------------------------------===//
  11 //
  12 // This file tests __udivti3 for the compiler_rt library.
  13 //
  14 //===----------------------------------------------------------------------===//
  15
  16 #include "int_lib.h"
  17 #include <stdio.h>
  18
  19 #ifdef CRT_HAS_128BIT
  20
  21 // Returns: a / b
  22
  23 COMPILER_RT_ABI tu_int __udivti3(tu_int a, tu_int b);
  24
  25 int test__udivti3(tu_int a, tu_int b, tu_int expected_q)
  26 {
  27     tu_int q = __udivti3(a, b);
  28     if (q != expected_q)
  29     {
  30         utwords at;
  31         at.all = a;
  32         utwords bt;
  33         bt.all = b;
  34         utwords qt;
  35         qt.all = q;
  36         utwords expected_qt;
  37         expected_qt.all = expected_q;
  38         printf("error in __udivti3: 0x%llX%.16llX / 0x%llX%.16llX = "
  39                "0x%llX%.16llX, expected 0x%llX%.16llX\n",
  40                at.s.high, at.s.low, bt.s.high, bt.s.low, qt.s.high, qt.s.low,
  41                expected_qt.s.high, expected_qt.s.low);
  42     }
  43     return q != expected_q;
  44 }
  45
  46 #endif
  47
  48 int main()
  49 {
  50 #ifdef CRT_HAS_128BIT
  51     if (test__udivti3(0, 1, 0))
  52         return 1;
  53     if (test__udivti3(2, 1, 2))
  54         return 1;
  55     if (test__udivti3(make_tu(0x8000000000000000uLL, 0), 1,
  56                       make_tu(0x8000000000000000uLL, 0)))
  57         return 1;
  58     if (test__udivti3(make_tu(0x8000000000000000uLL, 0), 2,
  59                       make_tu(0x4000000000000000uLL, 0)))
  60         return 1;
  61     if (test__udivti3(make_tu(0xFFFFFFFFFFFFFFFFuLL, 0xFFFFFFFFFFFFFFFFuLL), 2,
  62                       make_tu(0x7FFFFFFFFFFFFFFFuLL, 0xFFFFFFFFFFFFFFFFuLL)))
  63         return 1;
  64
  65 #else
  66     printf("skipped\n");
  67 #endif
  68     return 0;
  69 }