art_blend_luminosity_cmyk_16(int n_chan, uint16_t *gs_restrict dst, const uint16_t *gs_restrict backdrop,
                             const uint16_t *gs_restrict src)
{
    int i;

    /* Treat CMY the same as RGB. */
    art_blend_luminosity_rgb_16(3, dst, backdrop, src);
    for (i = 3; i < n_chan; i++)
        dst[i] = src[i];
}
art_blend_luminosity_cmyk_16(int n_chan, uint16_t *gs_restrict dst, const uint16_t *gs_restrict backdrop,
                             const uint16_t *gs_restrict src)
{
    int i;

     
    art_blend_luminosity_rgb_16(3, dst, backdrop, src);
    for (i = 3; i < n_chan; i++)
        dst[i] = src[i];
}