pub unsafe extern "C" fn secp256k1_rangeproof_verify( ctx: *const Context, min_value: &mut u64, max_value: &mut u64, commit: *const PedersenCommitment, proof: *const c_uchar, plen: size_t, extra_commit: *const c_uchar, extra_commit_len: size_t, gen: *const PublicKey) -> c_int