1// RUN: %clang_builtins %s %librt -o %t && %run %t
2// REQUIRES: int128
3//===-- umodti3_test.c - Test __umodti3 -----------------------------------===//
4//
5// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
6// See https://llvm.org/LICENSE.txt for license information.
7// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
8//
9//===----------------------------------------------------------------------===//
10//
11// This file tests __umodti3 for the compiler_rt library.
12//
13//===----------------------------------------------------------------------===//
14
15#include "int_lib.h"
16#include <stdio.h>
17
18#ifdef CRT_HAS_128BIT
19
20// Returns: a % b
21
22COMPILER_RT_ABI tu_int __umodti3(tu_int a, tu_int b);
23
24int test__umodti3(tu_int a, tu_int b, tu_int expected_r)
25{
26    tu_int r = __umodti3(a, b);
27    if (r != expected_r)
28    {
29        utwords at;
30        at.all = a;
31        utwords bt;
32        bt.all = b;
33        utwords rt;
34        rt.all = r;
35        utwords expected_rt;
36        expected_rt.all = expected_r;
37        printf("error in __umodti3: 0x%llX%.16llX %% 0x%llX%.16llX = "
38               "0x%llX%.16llX, expected 0x%llX%.16llX\n",
39               at.s.high, at.s.low, bt.s.high, bt.s.low, rt.s.high, rt.s.low,
40               expected_rt.s.high, expected_rt.s.low);
41    }
42    return r != expected_r;
43}
44
45#endif
46
47int main()
48{
49#ifdef CRT_HAS_128BIT
50    if (test__umodti3(0, 1, 0))
51        return 1;
52    if (test__umodti3(2, 1, 0))
53        return 1;
54    if (test__umodti3(make_tu(0x8000000000000000uLL, 0), 1, 0x0uLL))
55        return 1;
56    if (test__umodti3(make_tu(0x8000000000000000uLL, 0), 2, 0x0uLL))
57        return 1;
58    if (test__umodti3(make_tu(0xFFFFFFFFFFFFFFFFuLL, 0xFFFFFFFFFFFFFFFFuLL),
59                      2, 0x1uLL))
60        return 1;
61
62#else
63    printf("skipped\n");
64#endif
65    return 0;
66}
67