secp256k1_sys

Function secp256k1_keypair_xonly_pub

Source 
pub unsafe extern "C" fn secp256k1_keypair_xonly_pub(
    cx: *const Context,
    pubkey: *mut XOnlyPublicKey,
    pk_parity: *mut c_int,
    keypair: *const Keypair,
) -> c_int
Available on non-secp256k1_fuzz only.