Function libsodium_ffi::crypto_sign_edwards25519sha512batch_open

pub unsafe extern "C" fn crypto_sign_edwards25519sha512batch_open(
    m: *mut c_uchar, 
    mlen_p: *mut c_ulonglong, 
    sm: *const c_uchar, 
    smlen: c_ulonglong, 
    pk: *const c_uchar
) -> c_int