int json_real_set(json_t *real, double value);
+/* equality */
+
+int json_equal(json_t *value1, json_t *value2);
+
+
+/* copying */
+
+json_t *json_copy(json_t *value);
+json_t *json_deep_copy(json_t *value);
+
+
/* loading, printing */
#define JSON_ERROR_TEXT_LENGTH 160