Method updatef

src/fl/math/time_alpha.h:43–45

        return static_cast<u16>(update8(now) << 8) + 0xFF;
    }
    virtual float updatef(u32 now) FL_NOEXCEPT {
        return static_cast<float>(update16(now)) / 65535.0f;
    }
    virtual bool isActive(u32 now) const FL_NOEXCEPT = 0;
};