EVP_PKEY_gettable_params
const OSSL_PARAM *EVP_PKEY_gettable_params(const EVP_PKEY *pkey);
if (!TEST_ptr(gettable = EVP_PKEY_gettable_params(pkeyparam))
if (!TEST_ptr(gettable = EVP_PKEY_gettable_params(pk))
EVP_PKEY_gettable_params(pkey),