js/src/devtools/jint/sunspider/access-nsieve.js

changeset 0
6474c204b198
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/js/src/devtools/jint/sunspider/access-nsieve.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,48 @@
     1.4 +// The Great Computer Language Shootout
     1.5 +// http://shootout.alioth.debian.org/
     1.6 +//
     1.7 +// modified by Isaac Gouy
     1.8 +
     1.9 +function pad(number,width){
    1.10 +   var s = number.toString();
    1.11 +   var prefixWidth = width - s.length;
    1.12 +   if (prefixWidth>0){
    1.13 +      /* BEGIN LOOP */
    1.14 +      for (var i=1; i<=prefixWidth; i++) s = " " + s;
    1.15 +      /* END LOOP */
    1.16 +   }
    1.17 +   return s;
    1.18 +}
    1.19 +
    1.20 +function nsieve(m, isPrime){
    1.21 +   var i, k, count;
    1.22 +
    1.23 +   /* BEGIN LOOP */
    1.24 +   for (i=2; i<=m; i++) { isPrime[i] = true; }
    1.25 +   /* END LOOP */
    1.26 +   count = 0;
    1.27 +
    1.28 +   /* BEGIN LOOP */
    1.29 +   for (i=2; i<=m; i++){
    1.30 +      if (isPrime[i]) {
    1.31 +	 /* BEGIN LOOP */
    1.32 +         for (k=i+i; k<=m; k+=i) isPrime[k] = false;
    1.33 +	 /* END LOOP */
    1.34 +         count++;
    1.35 +      }
    1.36 +   }
    1.37 +   /* END LOOP */
    1.38 +   return count;
    1.39 +}
    1.40 +
    1.41 +function sieve() {
    1.42 +    /* BEGIN LOOP */
    1.43 +    for (var i = 1; i <= 3; i++ ) {
    1.44 +        var m = (1<<i)*10000;
    1.45 +        var flags = Array(m+1);
    1.46 +        nsieve(m, flags);
    1.47 +    }
    1.48 +    /* END LOOP */
    1.49 +}
    1.50 +
    1.51 +sieve();

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