Function libsodium_sys::crypto_box_curve25519xsalsa20poly1305_beforenm

pub unsafe extern fn crypto_box_curve25519xsalsa20poly1305_beforenm(k: *mut [u8; 32],
                                                                    pk: *const [u8; 32],
                                                                    sk: *const [u8; 32])
                                                                    -> c_int