Function libsodium_sys::crypto_stream_chacha20_ietf_xor_ic

pub unsafe extern "C" fn crypto_stream_chacha20_ietf_xor_ic(
    c: *mut c_uchar, 
    m: *const c_uchar, 
    mlen: c_ulonglong, 
    n: *const c_uchar, 
    ic: u32, 
    k: *const c_uchar
) -> c_int