1 //<script type="text/javascript">
3 //+ based on.. Jonas Raoni Soares Silva
4 //@ http://jsfromhell.com/classes/bignumber [rev. #4]
8 BigNumber = function(n, precision, roundType){
10 if(n instanceof BigNumber){
11 for(i in {precision: 0, roundType: 0, _s: 0, _f: 0}) o[i] = n[i];
16 o.precision = isNaN(precision = Math.abs(precision)) ? BigNumber.defaultPrecision : precision;
17 o.roundType = isNaN(r = Math.abs(roundType)) ? BigNumber.defaultRoundType : roundType;
19 o._s = (n += "").charAt(0) == "-";
20 o._f = ((n = n.replace(/[^\d.]/g, "").split(".", 2))[0] = n[0].replace(/^0+/, "") || "0").length;
21 for(i = (n = o._d = (n.join("") || "0").split("")).length; i; n[--i] = +n[i]);
28 with({$: BigNumber, o: BigNumber.prototype}){
29 BigNumber.ROUND_HALF_EVEN = (BigNumber.ROUND_HALF_DOWN = (BigNumber.ROUND_HALF_UP = (BigNumber.ROUND_FLOOR = (BigNumber.ROUND_CEIL = (BigNumber.ROUND_DOWN = (BigNumber.ROUND_UP = 0) + 1) + 1) + 1) + 1) + 1) + 1;
30 BigNumber.defaultPrecision = 40;
31 BigNumber.defaultRoundType = BigNumber.ROUND_HALF_UP;
34 BigNumber.prototype = {
36 if(this._s != (n = new BigNumber(n))._s)
37 return n._s ^= 1, this.subtract(n);
38 var o = new BigNumber(this), a = o._d, b = n._d, la = o._f,
39 lb = n._f, n = Math.max(la, lb), i, r;
40 la != lb && ((lb = la - lb) > 0 ? o._zeroes(b, lb, 1) : o._zeroes(a, -lb, 1));
41 i = (la = a.length) == (lb = b.length) ? a.length : ((lb = la - lb) > 0 ? o._zeroes(b, lb) : o._zeroes(a, -lb)).length;
42 for(r = 0; i; r = (a[--i] = a[i] + b[i] + r) / 10 >>> 0, a[i] %= 10);
43 return r && ++n && a.unshift(r), o._f = n, o.round();
45 o.subtract = function(n){
46 if(this._s != (n = new BigNumber(n))._s)
47 return n._s ^= 1, this.add(n);
48 var o = new BigNumber(this), c = o.abs().compare(n.abs()) + 1, a = c ? o : n, b = c ? n : o, la = a._f, lb = b._f, d = la, i, j;
49 a = a._d, b = b._d, la != lb && ((lb = la - lb) > 0 ? o._zeroes(b, lb, 1) : o._zeroes(a, -lb, 1));
50 for(i = (la = a.length) == (lb = b.length) ? a.length : ((lb = la - lb) > 0 ? o._zeroes(b, lb) : o._zeroes(a, -lb)).length; i;){
52 for(j = i; j && !a[--j]; a[j] = 9);
57 return c || (o._s ^= 1), o._f = d, o._d = b, o.round();
59 o.multiply = function(n){
60 var o = new BigNumber(this), r = o._d.length >= (n = new BigNumber(n))._d.length, a = (r ? o : n)._d,
61 b = (r ? n : o)._d, la = a.length, lb = b.length, x = new BigNumber, i, j, s;
62 for(i = lb; i; r && s.unshift(r), x.set(x.add(new BigNumber(s.join("")))))
63 for(s = (new Array(lb - --i)).join("0").split(""), r = 0, j = la; j; r += a[--j] * b[i], s.unshift(r % 10), r = (r / 10) >>> 0);
64 return o._s = o._s != n._s, o._f = ((r = la + lb - o._f - n._f) >= (j = (o._d = x._d).length) ? this._zeroes(o._d, r - j + 1, 1).length : j) - r, o.round();
66 o.divide = function(n){
67 if((n = new BigNumber(n)) == "0")
68 throw new Error("Division by 0");
71 var o = new BigNumber(this), a = o._d, b = n._d, la = a.length - o._f,
72 lb = b.length - n._f, r = new BigNumber, i = 0, j, s, l, f = 1, c = 0, e = 0;
73 r._s = o._s != n._s, r.precision = Math.max(o.precision, n.precision),
74 r._f = +r._d.pop(), la != lb && o._zeroes(la > lb ? b : a, Math.abs(la - lb));
75 n._f = b.length, b = n, b._s = false, b = b.round();
76 for(n = new BigNumber; a[0] == "0"; a.shift());
79 for(l = c = 0, n == "0" && (n._d = [], n._f = 0); i < a.length && n.compare(b) == -1; ++i){
80 (l = i + 1 == a.length, (!f && ++c > 1 || (e = l && n == "0" && a[i] == "0")))
81 && (r._f == r._d.length && ++r._f, r._d.push(0));
82 (a[i] == "0" && n == "0") || (n._d.push(a[i]), ++n._f);
85 if((l && n.compare(b) == -1 && (r._f == r._d.length && ++r._f, 1)) || (l = 0))
86 while(r._d.push(0), n._d.push(0), ++n._f, n.compare(b) == -1);
88 if(f = 0, n.compare(b) == -1 && !(l = 0))
89 while(l ? r._d.push(0) : l = 1, n._d.push(0), ++n._f, n.compare(b) == -1);
90 for(s = new BigNumber, j = 0; n.compare(y = s.add(b)) + 1 && ++j; s.set(y));
91 n.set(n.subtract(s)), !l && r._f == r._d.length && ++r._f, r._d.push(j);
93 while((i < a.length || n != "0") && (r._d.length - r._f) <= r.precision);
97 return this.subtract(this.divide(n).intPart().multiply(n));
100 var o = new BigNumber(this), i;
101 if((n = (new BigNumber(n)).intPart()) == 0) return o.set(1);
102 for(i = Math.abs(n); --i; o.set(o.multiply(this)));
103 return n < 0 ? o.set((new BigNumber(1)).divide(o)) : o;
106 return this.constructor(n), this;
108 o.compare = function(n){
109 var a = this, la = this._f, b = new BigNumber(n), lb = b._f, r = [-1, 1], i, l;
111 return a._s ? -1 : 1;
113 return r[(la > lb) ^ a._s];
114 for(la = (a = a._d).length, lb = (b = b._d).length, i = -1, l = Math.min(la, lb); ++i < l;)
116 return r[(a[i] > b[i]) ^ a._s];
117 return la != lb ? r[(la > lb) ^ a._s] : 0;
119 o.negate = function(){
120 var n = new BigNumber(this); return n._s ^= 1, n;
123 var n = new BigNumber(this); return n._s = 0, n;
125 o.intPart = function(){
126 return new BigNumber((this._s ? "-" : "") + (this._d.slice(0, this._f).join("") || "0"));
128 o.valueOf = o.toString = function(){
130 return (o._s ? "-" : "") + (o._d.slice(0, o._f).join("") || "0") + (o._f != o._d.length ? "." + o._d.slice(o._f).join("") : "");
132 o._zeroes = function(n, l, t){
133 var s = ["push", "unshift"][t || 0];
134 for(++l; --l; n[s](0));
137 o.round = function(){
138 if("_rounding" in this) return this;
139 var BigNumber = BigNumber, r = this.roundType, b = this._d, d, p, n, x;
140 for(this._rounding = true; this._f > 1 && !b[0]; --this._f, b.shift());
141 for(d = this._f, p = this.precision + d, n = b[p]; b.length > d && !b[b.length -1]; b.pop());
142 x = (this._s ? "-" : "") + (p - d ? "0." + this._zeroes([], p - d - 1).join("") : "") + 1;
144 n && (r == BigNumber.DOWN ? false : r == BigNumber.UP ? true : r == BigNumber.CEIL ? !this._s
145 : r == BigNumber.FLOOR ? this._s : r == BigNumber.HALF_UP ? n >= 5 : r == BigNumber.HALF_DOWN ? n > 5
146 : r == BigNumber.HALF_EVEN ? n >= 5 && b[p - 1] & 1 : false) && this.add(x);
147 b.splice(p, b.length - p);
149 return delete this._rounding, this;