Mercurial > projects > ldc
view tests/mini/sieve.d @ 808:4ad1e7b10378
when building the runtime pass -fPIC for shared libs and -disable-invariants for gc
author | elrood |
---|---|
date | Sun, 30 Nov 2008 19:19:39 +0100 |
parents | 1bb99290e03a |
children |
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/* Eratosthenes Sieve prime number calculation. */ extern(C) int printf(char*, ...); bool flags[8191]; int main() { int i, prime, k, count, iter; printf("10 iterations\n"); for (iter = 1; iter <= 10; iter++) { count = 0; flags[] = true; for (i = 0; i < flags.length; i++) { if (flags[i]) { prime = i + i + 3; k = i + prime; while (k < flags.length) { flags[k] = false; k += prime; } count += 1; } } } printf("%d primes\n", count); return 0; }