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git.saurik.com Git - apple/network_cmds.git/blob - ecnprobe/gmt2local.c
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22 #include <sys/types.h>
26 #ifdef TIME_WITH_SYS_TIME
30 #ifdef HAVE_OS_PROTO_H
34 #include "gmt2local.h"
37 * Returns the difference between gmt and local time in seconds.
38 * Use gmtime() and localtime() to keep things simple.
44 register struct tm
*gmt
, *loc
;
52 dt
= (loc
->tm_hour
- gmt
->tm_hour
) * 60 * 60 +
53 (loc
->tm_min
- gmt
->tm_min
) * 60;
56 * If the year or julian day is different, we span 00:00 GMT
57 * and must add or subtract a day. Check the year first to
58 * avoid problems when the julian day wraps.
60 dir
= loc
->tm_year
- gmt
->tm_year
;
62 dir
= loc
->tm_yday
- gmt
->tm_yday
;
63 dt
+= dir
* 24 * 60 * 60;