reference, declarationdefinition
definition → references, declarations, derived classes, virtual overrides
reference to multiple definitions → definitions
unreferenced
    1
    2
    3
    4
    5
    6
    7
    8
    9
   10
   11
   12
   13
   14
   15
   16
   17
   18
   19
   20
   21
   22
   23
   24
   25
   26
   27
   28
   29
   30
   31
   32
   33
   34
   35
   36
   37
   38
   39
   40
   41
   42
   43
   44
   45
   46
   47
   48
   49
   50
   51
   52
   53
   54
   55
   56
   57
   58
   59
   60
   61
   62
   63
   64
   65
   66
   67
// RUN: %clang_builtins %s %librt -o %t && %run %t
// REQUIRES: librt_has_umodti3
// REQUIRES: int128
//===-- umodti3_test.c - Test __umodti3 -----------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file tests __umodti3 for the compiler_rt library.
//
//===----------------------------------------------------------------------===//

#include "int_lib.h"
#include <stdio.h>

#ifdef CRT_HAS_128BIT

// Returns: a % b

COMPILER_RT_ABI tu_int __umodti3(tu_int a, tu_int b);

int test__umodti3(tu_int a, tu_int b, tu_int expected_r)
{
    tu_int r = __umodti3(a, b);
    if (r != expected_r)
    {
        utwords at;
        at.all = a;
        utwords bt;
        bt.all = b;
        utwords rt;
        rt.all = r;
        utwords expected_rt;
        expected_rt.all = expected_r;
        printf("error in __umodti3: 0x%llX%.16llX %% 0x%llX%.16llX = "
               "0x%llX%.16llX, expected 0x%llX%.16llX\n",
               at.s.high, at.s.low, bt.s.high, bt.s.low, rt.s.high, rt.s.low,
               expected_rt.s.high, expected_rt.s.low);
    }
    return r != expected_r;
}

#endif

int main()
{
#ifdef CRT_HAS_128BIT
    if (test__umodti3(0, 1, 0))
        return 1;
    if (test__umodti3(2, 1, 0))
        return 1;
    if (test__umodti3(make_tu(0x8000000000000000uLL, 0), 1, 0x0uLL))
        return 1;
    if (test__umodti3(make_tu(0x8000000000000000uLL, 0), 2, 0x0uLL))
        return 1;
    if (test__umodti3(make_tu(0xFFFFFFFFFFFFFFFFuLL, 0xFFFFFFFFFFFFFFFFuLL),
                      2, 0x1uLL))
        return 1;

#else
    printf("skipped\n");
#endif
    return 0;
}