mirror of https://github.com/ArduPilot/ardupilot
45 lines
984 B
C++
45 lines
984 B
C++
#include "time.h"
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/*
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mktime replacement from Samba
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*/
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time_t ap_mktime(const struct tm *t)
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{
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time_t epoch = 0;
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int n;
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int mon [] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }, y, m, i;
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const unsigned MINUTE = 60;
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const unsigned HOUR = 60*MINUTE;
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const unsigned DAY = 24*HOUR;
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const unsigned YEAR = 365*DAY;
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if (t->tm_year < 70) {
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return (time_t)-1;
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}
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n = t->tm_year + 1900 - 1;
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epoch = (t->tm_year - 70) * YEAR +
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((n / 4 - n / 100 + n / 400) - (1969 / 4 - 1969 / 100 + 1969 / 400)) * DAY;
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y = t->tm_year + 1900;
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m = 0;
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for (i = 0; i < t->tm_mon; i++) {
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epoch += mon [m] * DAY;
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if (m == 1 && y % 4 == 0 && (y % 100 != 0 || y % 400 == 0)) {
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epoch += DAY;
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}
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if (++m > 11) {
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m = 0;
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y++;
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}
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}
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epoch += (t->tm_mday - 1) * DAY;
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epoch += t->tm_hour * HOUR + t->tm_min * MINUTE + t->tm_sec;
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return epoch;
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}
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