v

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module time
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// days_from_unix_epoch - return the number of days since the Unix epoch 1970-01-01.
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// A detailed description of the algorithm here is in:
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// http://howardhinnant.github.io/date_algorithms.html
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// Note that function will return negative values for days before 1970-01-01.
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pub fn days_from_unix_epoch(year int, month int, day int) int {
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	y := if month <= 2 { year - 1 } else { year }
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	era := y / 400
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	year_of_the_era := y - era * 400 // [0, 399]
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	day_of_year := (153 * (month + (if month > 2 { -3 } else { 9 })) + 2) / 5 + day - 1 // [0, 365]
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	day_of_the_era := year_of_the_era * 365 + year_of_the_era / 4 - year_of_the_era / 100 +
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		day_of_year // [0, 146096]
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	return era * 146097 + day_of_the_era - 719468
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}
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// days_from_unix_epoch - return the number of days since the Unix epoch 1970-01-01.
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// A detailed description of the algorithm here is in:
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// http://howardhinnant.github.io/date_algorithms.html
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// Note that method will return negative values for days before 1970-01-01.
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@[inline]
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pub fn (t Time) days_from_unix_epoch() int {
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	return days_from_unix_epoch(t.year, t.month, t.day)
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}
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// date_from_days_after_unix_epoch - convert number of `days` after the unix epoch 1970-01-01, to a Time.
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// Only the year, month and day of the returned Time will be set, everything else will be 0.
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pub fn date_from_days_after_unix_epoch(days int) Time {
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	year, month, day := calculate_date_from_day_offset(i64(days))
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	return Time{
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		year:  year
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		month: month
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		day:   day
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	}
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}
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