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master
libraries/AP_Common/time.cpp
43 строки
984 B
Peter Barker
AP_Common: move implemenation of ap_mktime (NFC)
27 июн 2023, 04:25
27 июн 2023, 04:25
e659667
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#include "time.h" /* mktime replacement from Samba */ time_t ap_mktime(const struct tm *t) { time_t epoch = 0; int n; int mon [] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }, y, m, i; const unsigned MINUTE = 60; const unsigned HOUR = 60*MINUTE; const unsigned DAY = 24*HOUR; const unsigned YEAR = 365*DAY; if (t->tm_year < 70) { return (time_t)-1; } n = t->tm_year + 1900 - 1; epoch = (t->tm_year - 70) * YEAR + ((n / 4 - n / 100 + n / 400) - (1969 / 4 - 1969 / 100 + 1969 / 400)) * DAY; y = t->tm_year + 1900; m = 0; for (i = 0; i < t->tm_mon; i++) { epoch += mon [m] * DAY; if (m == 1 && y % 4 == 0 && (y % 100 != 0 || y % 400 == 0)) { epoch += DAY; } if (++m > 11) { m = 0; y++; } } epoch += (t->tm_mday - 1) * DAY; epoch += t->tm_hour * HOUR + t->tm_min * MINUTE + t->tm_sec; return epoch; }