+/* time-conf.c */
+
+/**
+ * A user type for parsing of time intervals in configuration files.
+ * It is specified as fractional seconds and internally converted to
+ * a <<basics:type_timestamp_t,`timestamp_t`>>. When conversion of
+ * a non-zero value yields zero, an error is raised.
+ **/
+extern struct cf_user_type timestamp_type;
+