实现Apache Doris的bitmap相关函数过程中遇到的问

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正如题目所言，最近笔者在尝试解决Doris的bitmap函数相关的一些issue，如bitmap_max函数、bitmap_andnot函数的实现。

一些值得关注的高光源码

//bitmap_value.h的Roaring64Map类的maximum()函数和minimum()函数
/**
     * Return the largest value (if not empty)
     *
     */
    uint64_t maximum() const {
        for (auto roaring_iter = roarings.crbegin(); roaring_iter != roarings.crend();
             ++roaring_iter) {
            if (!roaring_iter->second.isEmpty()) {
                return uniteBytes(roaring_iter->first, roaring_iter->second.maximum());
            }
        }
        // we put std::numeric_limits<>::max/min in parenthesis
        // to avoid a clash with the Windows.h header under Windows
        return (std::numeric_limits<uint64_t>::min)();
    }

    /**
     * Return the smallest value (if not empty)
     *
     */
    uint64_t minimum() const {
        for (auto roaring_iter = roarings.cbegin(); roaring_iter != roarings.cend();
             ++roaring_iter) {
            if (!roaring_iter->second.isEmpty()) {
                return uniteBytes(roaring_iter->first, roaring_iter->second.minimum());
            }
        }
        // we put std::numeric_limits<>::max/min in parenthesis
        // to avoid a clash with the Windows.h header under Windows
        return (std::numeric_limits<uint64_t>::max)();
    }

可以看到maximum函数和minimum函数的末尾为了 avoid a clash with the Windows.h header under Windows，选择了返回(std::numeric_limits<uint64_t>::min)()和(std::numeric_limits<uint64_t>::max)()，这么做的进一步解释：