Function barnacl_sys::crypto_sign_edwards25519sha512batch

pub unsafe extern "C" fn crypto_sign_edwards25519sha512batch(
    sm: *mut u8, 
    smlen: *mut c_ulonglong, 
    m: *const u8, 
    mlen: c_ulonglong, 
    sk: *const [u8; 64]
) -> c_int