EC_KEY_decoded_from_explicit_params
val = EC_KEY_decoded_from_explicit_params(EVP_PKEY_get0_EC_KEY(pkey));
OSSL_DEPRECATEDIN_3_0 int EC_KEY_decoded_from_explicit_params(const EC_KEY *key);
int explicitparams = EC_KEY_decoded_from_explicit_params(eck);
|| !TEST_int_eq(EC_KEY_decoded_from_explicit_params(key), -1)
|| !TEST_int_eq(EC_KEY_decoded_from_explicit_params(key), 0))
|| !TEST_int_eq(EC_KEY_decoded_from_explicit_params(key), 1))