Nils O. Selåsdal
19 lines
322 B
C
19 lines
322 B
C
int
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uc_day_of_week(int day, int month, int year)
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{
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int cent;
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/* adjust months so February is the last one */
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month -= 2;
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if (month < 1) {
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month += 12;
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--year;
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}
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/* split by century */
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cent = year / 100;
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year %= 100;
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return ((26 * month - 2) / 10 + day + year
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+ year / 4 + cent / 4 + 5 * cent) % 7;
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}
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