Function secp256k1_sys::recovery::secp256k1_ecdsa_recover

pub unsafe extern "C" fn secp256k1_ecdsa_recover(
    cx: *const Context, 
    pk: *mut PublicKey, 
    sig: *const RecoverableSignature, 
    msg32: *const c_uchar
) -> c_int

Available on crate feature recovery only.