diff options
Diffstat (limited to 'contrib/ntp/libntp/calyearstart.c')
-rw-r--r-- | contrib/ntp/libntp/calyearstart.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/contrib/ntp/libntp/calyearstart.c b/contrib/ntp/libntp/calyearstart.c new file mode 100644 index 0000000..0f7ca4f --- /dev/null +++ b/contrib/ntp/libntp/calyearstart.c @@ -0,0 +1,22 @@ +/* + * calyearstart - determine the NTP time at midnight of January 1 in + * the year of the given date. + */ +#include <sys/types.h> + +#include "ntp_types.h" +#include "ntp_calendar.h" +#include "ntp_stdlib.h" + +u_long +calyearstart(u_long ntp_time) +{ + struct calendar jt; + + caljulian(ntp_time,&jt); + jt.yearday = 1; + jt.monthday = 1; + jt.month = 1; + jt.hour = jt.minute = jt.second = 0; + return caltontp(&jt); +} |