Function libsodium::crypto_sign_edwards25519sha512batch

pub unsafe extern "C" fn crypto_sign_edwards25519sha512batch(
    sm: *mut c_uchar, 
    smlen_p: *mut c_ulonglong, 
    m: *const c_uchar, 
    mlen: c_ulonglong, 
    sk: *const c_uchar
) -> c_int