Function secp256k1_zkp_sys::secp256k1_schnorrsig_verify

pub unsafe extern "C" fn secp256k1_schnorrsig_verify(
    cx: *const Context,
    sig64: *const u8,
    msg32: *const u8,
    msglen: usize,
    pubkey: *const XOnlyPublicKey
) -> i32