32 lines
710 B
C
32 lines
710 B
C
#include <stdbool.h>
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#include <stdint.h>
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#include <stddef.h>
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#include <sysdefs/time.h>
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bool time_isleap(uint32_t y) {
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return ((y % 4 == 0) && (y % 100 != 0) || (y % 400 == 0));
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}
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const uint16_t days_before_month[12] = { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 };
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timeunix_t time_tounix(Time *time) {
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uint64_t days = 0;
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for (uint32_t y = 1970; y < time->year; y++) {
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days += time_isleap(y) ? 366 : 365;
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}
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days += days_before_month[time->month - 1];
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if (time->month > 2 && time_isleap(time->year)) {
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days += 1;
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}
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days += time->day - 1;
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uint64_t secs = days * 86400;
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secs += time->hour * 3600;
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secs += time->minute * 60;
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secs += time->second;
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return secs;
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}
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