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caltime(3) Library Functions Manual caltime(3) NAME caltime_tai - convert calendar dates and times SYNTAX #include <caltime.h> #include <tai.h> void caltime_tai(&ct,&t); void caltime_utc(&ct,&t,&weekday,&yearday); struct caltime ct; struct tai t; int *weekday; int *yearday; DESCRIPTION caltime_tai reads a date, time, and UTC offset from ct. It puts the corresponding TAI64 label into t. caltime_utc reads a TAI64 label from t. It puts the corresponding date and time into ct, with UTC offset 0. caltime_utc fills in weekday and yearday the same way as caldate_from- mjd. LIMITATIONS The sequence of TAI64 labels has been determined for the next few hun- dred billion years. The same is not true, however, for calendar dates and times. New leap seconds are added every year or two, as discussed in leapsecs(3); and the Gregorian calendar will change in a few thou- sand years, as discussed in caldate_mjd(3). This means that cal- time_tai and caltime_utc are not useful for dates far in the future. SEE ALSO caldate_mjd(3), caltime(3), tai(3), leapsecs(3) caltime(3)
NAME | SYNTAX | DESCRIPTION | LIMITATIONS | SEE ALSO
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