-memcached_return memcached_result_set_value(memcached_result_st *ptr, char *value, size_t length);
-void memcached_result_set_flags(A,B) (A)->flags= B
-void memcached_result_set_expiration(A) (A)->expiration
+LIBMEMCACHED_API
+memcached_return memcached_result_set_value(memcached_result_st *ptr, const char *value, size_t length);
+#define memcached_result_set_flags(A,B) (A)->flags=(B)
+#define memcached_result_set_expiration(A,B) (A)->expiration=(B)