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FG
1// prime.js\r
2\r
3// Pure Ecmascript version of low level helper\r
4function primeCheckEcmascript(val, limit) {\r
5 for (var i = 2; i <= limit; i++) {\r
6 if ((val % i) == 0) { return false; }\r
7 }\r
8 return true;\r
9}\r
10\r
11// Select available helper at load time\r
12var primeCheckHelper = (this.primeCheckNative || primeCheckEcmascript);\r
13\r
14// Check 'val' for primality\r
15function primeCheck(val) {\r
16 if (val == 1 || val == 2) { return true; }\r
17 var limit = Math.ceil(Math.sqrt(val));\r
18 while (limit * limit < val) { limit += 1; }\r
19 return primeCheckHelper(val, limit);\r
20}\r
21\r
22function primeTest() {\r
23 var res = [];\r
24\r
25 print('Have native helper: ' + (primeCheckHelper !== primeCheckEcmascript) + '\n');\r
26 for (var i = 2; i <= 1000; i++) {\r
27 if (primeCheck(i)) { res.push(i); }\r
28 } \r
29 print(res.join(' '));\r
30}\r
31\r
32print = this.send || conn.write\r
33\r
34print('HTTP/1.0 200 OK\r\nContent-Type: text/plain\r\n\r\n');\r
35\r
36primeTest();\r