25 行
469 B
C
25 行
469 B
C
#include "tai.h"
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#include "caldate.h"
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void caldate_easter(struct caldate *cd)
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{
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long c;
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long t;
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long j;
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long n;
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long y;
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y = cd->year;
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c = (y / 100) + 1;
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t = 210 - (((c * 3) / 4) % 210);
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j = y % 19;
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n = 57 - ((14 + j * 11 + (c * 8 + 5) / 25 + t) % 30);
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if ((n == 56) && (j > 10)) --n;
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if (n == 57) --n;
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n -= ((((y % 28) * 5) / 4 + t + n + 2) % 7);
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if (n < 32) { cd->month = 3; cd->day = n; }
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else { cd->month = 4; cd->day = n - 31; }
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}
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