Function libsodium::crypto_aead_chacha20poly1305_decrypt

pub unsafe extern "C" fn crypto_aead_chacha20poly1305_decrypt(
    m: *mut c_uchar, 
    mlen: *mut c_ulonglong, 
    nsec: *mut c_uchar, 
    c: *const c_uchar, 
    clen: c_ulonglong, 
    ad: *const c_uchar, 
    adlen: c_ulonglong, 
    npub: *const c_uchar, 
    k: *const c_uchar
) -> c_int