Function find_if_not

include/boost/parser/detail/text/algorithm.hpp:97–105

        a sentinel. */
    template<typename BidiIter, typename Sentinel, typename Pred>
    BidiIter find_if_not(BidiIter first, Sentinel last, Pred p)
    {
        while (first != last) {
            if (!p(*first))
                return first;
            ++first;
        }
        return first;
    }

    /** Analogue of `std::find()` that finds the last value in `[first, last)`
        equal to `x`. */