Function alsa_sys::snd_tlv_convert_from_dB

pub unsafe extern "C" fn snd_tlv_convert_from_dB(
    tlv: *mut c_uint, 
    rangemin: c_long, 
    rangemax: c_long, 
    db_gain: c_long, 
    value: *mut c_long, 
    xdir: c_int
) -> c_int