diff -r 8255f1a371d7 -r 7898ba56c7cf lib/iec_std_lib.h
--- a/lib/iec_std_lib.h	Fri Mar 08 11:38:26 2013 +0900
+++ b/lib/iec_std_lib.h	Mon Mar 11 12:54:25 2013 +0100
@@ -604,7 +604,7 @@
                  broken_down_time.tm_min,
                  broken_down_time.tm_sec);
     }else{
-        res.len = snprintf((char*)&res.body, STR_MAX_LEN, "TOD#%2.2d:%2.2d:%09.6g",
+        res.len = snprintf((char*)&res.body, STR_MAX_LEN, "TOD#%2.2d:%2.2d:%09.6f",
                  broken_down_time.tm_hour,
                  broken_down_time.tm_min,
                  (LREAL)broken_down_time.tm_sec + (LREAL)IN.tv_nsec / 1e9);
@@ -626,7 +626,7 @@
                  broken_down_time.tm_min,
                  broken_down_time.tm_sec);
     }else{
-        res.len = snprintf((char*)&res.body, STR_MAX_LEN, "DT#%d-%2.2d-%2.2d-%2.2d:%2.2d:%09.6g",
+        res.len = snprintf((char*)&res.body, STR_MAX_LEN, "DT#%d-%2.2d-%2.2d-%2.2d:%2.2d:%09.6f",
                  broken_down_time.tm_year,
                  broken_down_time.tm_mon,
                  broken_down_time.tm_day,