Function breez_sdk_core::bitcoin::util::key::secp256k1::ffi::recovery::secp256k1_ecdsa_recoverable_signature_serialize_compact
pub unsafe extern "C" fn secp256k1_ecdsa_recoverable_signature_serialize_compact(
cx: *const Context,
output64: *mut u8,
recid: *mut i32,
sig: *const RecoverableSignature,
) -> i32