aparler/RosettaCodeData
1
0
Fork 0
Code Issues 12 Pull requests 3 Projects Releases Packages Wiki Activity Actions

June 2018 Update

Browse source
This commit is contained in:
Ingy döt Net 2018-06-22 20:57:24 +00:00
parent ba8067c3b7
commit 22f33d4004
5278 changed files with 84726 additions and 14379 deletions
Download patch file Download diff file Expand all files Collapse all files

25
Task/Pi/JavaScript/pi-1.js Normal file
View file

@ -0,0 +1,25 @@
var BigInteger = require('jsbn').BigInteger;
var bi = function(n, b) { return new BigInteger(n.toString(), b ? b : 10); };
function calcPi() {
var q=bi(1), r=bi(0), t=bi(1), k=bi(1), n=bi(3), l=bi(3);
var one=bi(1), two=bi(2), three=bi(3), four=bi(4), seven=bi(7), ten=bi(10);
while (true) {
if (q.multiply(four).add(r).subtract(t).compareTo(n.multiply(t)) < 0) {
process.stdout.write(n.toString());
nr = (r.subtract(n.multiply(t))).multiply(ten);
n = (q.multiply(three).add(r)).multiply(ten).divide(t).subtract(n.multiply(ten));
q = q.multiply(ten);
r = nr;
} else {
nr = q.shiftLeft(1).add(r).multiply(l);
nn = q.multiply(k).multiply(seven).add(two).add(r.multiply(l)).divide(t.multiply(l));
q = q.multiply(k);
t = t.multiply(l);
l = l.add(two);
k = k.add(one);
n = nn;
r = nr;
}
}
}
calcPi();