diff options
Diffstat (limited to 'third_party/webkit/PerformanceTests/SunSpider/sunspider-0.9.1/bitops-nsieve-bits.js')
-rw-r--r-- | third_party/webkit/PerformanceTests/SunSpider/sunspider-0.9.1/bitops-nsieve-bits.js | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/third_party/webkit/PerformanceTests/SunSpider/sunspider-0.9.1/bitops-nsieve-bits.js b/third_party/webkit/PerformanceTests/SunSpider/sunspider-0.9.1/bitops-nsieve-bits.js new file mode 100644 index 0000000000..150adf015c --- /dev/null +++ b/third_party/webkit/PerformanceTests/SunSpider/sunspider-0.9.1/bitops-nsieve-bits.js @@ -0,0 +1,32 @@ +// 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);
+ }
+}
+
+sieve();
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