count_active_channels()

int fl::colorimetric_detail::count_active_channels ( float s_r, float s_g, float s_b )

inline

Definition at line 130 of file rgbw_colorimetric.h.

                                                                               {
    // 1 / 65535 — matches the 16-bit verifier precision used in the
    // reference math model; anything below this is below noise floor.
    constexpr float kTopoEps = 1.0f / 65535.0f;
    int n = 0;
    if (s_r > kTopoEps) ++n;
    if (s_g > kTopoEps) ++n;
    if (s_b > kTopoEps) ++n;
    return n;
}

References fl::FL_NO_EXCEPT.