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- // The Great Computer Language Shootout
- // http://shootout.alioth.debian.org
- //
- // Contributed by Ian Osgood
- function pad(n,width) {
- var s = n.toString();
- while (s.length < width) s = ' ' + s;
- return s;
- }
- function primes(isPrime, n) {
- var i, count = 0, m = 10000<<n, size = m+31>>5;
- for (i=0; i<size; i++) isPrime[i] = 0xffffffff;
- for (i=2; i<m; i++)
- if (isPrime[i>>5] & 1<<(i&31)) {
- for (var j=i+i; j<m; j+=i)
- isPrime[j>>5] &= ~(1<<(j&31));
- count++;
- }
- }
- function sieve() {
- for (var i = 4; i <= 4; i++) {
- var isPrime = new Array((10000<<i)+31>>5);
- primes(isPrime, i);
- }
- return isPrime;
- }
- var result = sieve();
- var sum = 0;
- for (var i = 0; i < result.length; ++i)
- sum += result[i];
- var expected = -1286749544853;
- if (sum != expected)
- throw "ERROR: bad result: expected " + expected + " but got " + sum;
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