Add some more comments to time conversion

diff --git a/libraries/liblutil/utils.c b/libraries/liblutil/utils.c
index 16221d330c0bf2549d4ce4585a21a5f60b0112a2..1ede99f41e0341434807d35830fd8a0959d063d7 100644 (file)
--- a/libraries/liblutil/utils.c
+++ b/libraries/liblutil/utils.c
@@ -173,12 +173,15 @@ int lutil_tm2time( struct lutil_tm *tm, struct lutil_timet *tt )
        /* add in days in this month */ 
        tt->tt_sec += (tm->tm_mday - 1); 
 
+       /* this function can handle a range of about 17408 years... */
        /* 86400 seconds in a day, divided by 128 = 675 */
        tt->tt_sec *= 675;
+
+       /* move high 7 bits into tt_gsec */
        tt->tt_gsec = tt->tt_sec >> 25;
        tt->tt_sec -= tt->tt_gsec << 25;
 
-       /* convert to hours */ 
+       /* get hours */ 
        sec = tm->tm_hour; 
 
        /* convert to minutes */ 
@@ -189,6 +192,7 @@ int lutil_tm2time( struct lutil_tm *tm, struct lutil_timet *tt )
        sec *= 60L; 
        sec += tm->tm_sec; 
        
+       /* add remaining seconds */
        tt->tt_sec <<= 7;
        tt->tt_sec += sec;