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SFL Version 2.11 |
#include "sfldate.h" void gmt_to_local (long gmt_date, long gmt_time, long *date, long *time)
Converts the specified GMT date and time to the local time. Returns the local date and time in two arguments. If the supplied value is out of range, returns 00:00 on 1 January, 1970 (19700101).
{ time_t time_value; struct tm *time_struct; /* Convert from GMT */ time_value = date to timer (gmt_date, gmt_time) - TIMEZONE; time_struct = safe localtime (&time_value); if (time_struct-> tm_isdst) { time_value += 3600; /* Adjust for daylight savings */ time_struct = localtime (&time_value); } time_struct-> tm_year += 1900; *date = MAKE_DATE (time_struct-> tm_year / 100, time_struct-> tm_year % 100, time_struct-> tm_mon + 1, time_struct-> tm_mday); *time = MAKE_TIME (time_struct-> tm_hour, time_struct-> tm_min, time_struct-> tm_sec, 0); }
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