Created
March 17, 2018 22:42
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calculates first 800 digits of pi
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#include <stdio.h> | |
int main() { | |
int r[2800 + 1]; | |
int i, k; | |
int b, d; | |
int c = 0; | |
for (i = 0; i < 2800; i++) { | |
r[i] = 2000; | |
} | |
for (k = 2800; k > 0; k -= 14) { | |
d = 0; | |
i = k; | |
for (;;) { | |
d += r[i] * 10000; | |
b = 2 * i - 1; | |
r[i] = d % b; | |
d /= b; | |
i--; | |
if (i == 0) break; | |
d *= i; | |
} | |
printf("%.4d", c + d / 10000); | |
c = d % 10000; | |
} | |
return 0; | |
} |
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