Method normalize

extern/json/json.hpp:16968–16979

! @brief normalize x such that the significand is >= 2^(q-1) @pre x.f != 0 */

    @pre x.f != 0
    */
    static diyfp normalize(diyfp x) noexcept
    {
        JSON_ASSERT(x.f != 0);

        while ((x.f >> 63u) == 0)
        {
            x.f <<= 1u;
            x.e--;
        }

        return x;
    }

    /*!
    @brief normalize x such that the result has the exponent E