+/**
+ * modest_conf_get_float:
+ * @self: a ModestConf instance
+ * @key: the key of the value to retrieve
+ * @err: a GError ptr, or NULL to ignore.
+ *
+ * get an integer from the configuration system
+ *
+ * Returns: an double with the value for the key, or -1 in case of
+ * error (of course, -1 can also be returned in non-error cases).
+ * @err gives details in case of error
+ */
+gdouble modest_conf_get_float (ModestConf* self, const gchar* key, GError **err);