Function libsodium_sys::crypto_sign_ed25519_detached

pub unsafe extern "C" fn crypto_sign_ed25519_detached(
    sig: *mut c_uchar, 
    siglen_p: *mut c_ulonglong, 
    m: *const c_uchar, 
    mlen: c_ulonglong, 
    sk: *const c_uchar
) -> c_int