Function quant_coarse_energy 

pub fn quant_coarse_energy(
    m: &CeltMode,
    start: usize,
    end: usize,
    e_bands: &[f32],
    old_e_bands: &mut [f32],
    budget: u32,
    error: &mut [f32],
    enc: &mut RangeCoder,
    channels: usize,
    lm: usize,
    force_intra: bool,
    nb_available_bytes: usize,
)