+/* Attribute of a function whose result depends only on the arguments
+ (not pointers!) and which has no side effects. */
+#ifndef _UC_ATTRIBUTE_CONST
+# if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95)
+# define _UC_ATTRIBUTE_CONST __attribute__ ((__const__))
+# else
+# define _UC_ATTRIBUTE_CONST
+# endif
+#endif
+
+/* Attribute of a function whose result depends only on the arguments
+ (possibly pointers) and global memory, and which has no side effects. */
+#ifndef _UC_ATTRIBUTE_PURE
+# if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96)
+# define _UC_ATTRIBUTE_PURE __attribute__ ((__pure__))
+# else
+# define _UC_ATTRIBUTE_PURE
+# endif
+#endif
+