shared = exp_shared_p;
    if (max_s == (1 << n)) {
        exp_shared += 1;
    }

    let scalar = 1.0 / exp2(f32(exp_shared - b - n));
    let red_s = u32(red_c * scalar + 0.5);
    let green_s = u32(green_c * scalar + 0.5);
    let blue_s = u32(blue_c * scalar + 0.5);

    const mask_9 = 0x1ffu;
    let result = (u32(exp_shared) << 27u) |
        ((blue_s & mask_9) << 18u) |
        ((green_s & mask_9) << 9u) |
        (red_s & mask_9);

    return result;
}