diff --git a/README.md b/README.md
index 06cf5f2..4c9c090 100644
--- a/README.md
+++ b/README.md
@@ -13,6 +13,7 @@ A JavaScript library for arbitrary-precision decimal and non-decimal arithmetic.
   - Replicates the `toExponential`, `toFixed`, `toPrecision` and `toString` methods of JavaScript's Number type
   - Includes a `toFraction` and a correctly-rounded `squareRoot` method
   - No dependencies
+  - ECMAScript 3 compliant
   - Comprehensive [documentation](http://mikemcl.github.io/bignumber.js/) and test set 
 
 If an even smaller and simpler library is required see [big.js](https://github.com/MikeMcl/big.js/).   
@@ -212,6 +213,9 @@ See LICENCE.
 
 ## Change Log
 
+####1.5.0
+* 13/11/2014 Added `toJSON` and `decimalPlaces` methods.
+
 ####1.4.1
 * 08/06/2014 Amend README.
 
diff --git a/bignumber.js b/bignumber.js
index 0044607..c317e06 100644
--- a/bignumber.js
+++ b/bignumber.js
@@ -1,10 +1,10 @@
-/*! bignumber.js v1.4.1 https://github.com/MikeMcl/bignumber.js/LICENCE */
+/*! bignumber.js v1.5.0 https://github.com/MikeMcl/bignumber.js/LICENCE */
 
 ;(function ( global ) {
     'use strict';
 
     /*
-      bignumber.js v1.4.1
+      bignumber.js v1.5.0
       A JavaScript library for arbitrary-precision arithmetic.
       https://github.com/MikeMcl/bignumber.js
       Copyright (c) 2012 Michael Mclaughlin <M8ch88l@gmail.com>
diff --git a/bignumber.min.js b/bignumber.min.js
index 0cb8118..b1bf131 100644
--- a/bignumber.min.js
+++ b/bignumber.min.js
@@ -1,2 +1,2 @@
-/*! bignumber.js v1.4.1 https://github.com/MikeMcl/bignumber.js/LICENCE */
-(function(n){"use strict";function t(n,i){var c,l,a,b,w,p,s=this;if(!(s instanceof t))return new t(n,i);if(n instanceof t)if(u=0,i!==c)n+="";else{s.s=n.s;s.e=n.e;s.c=(n=n.c)?n.slice():n;return}if(typeof n!="string"&&(n=(a=typeof n=="number"||Object.prototype.toString.call(n)=="[object Number]")&&n===0&&1/n<0?"-0":n+""),p=n,i===c&&g.test(n))s.s=n.charAt(0)=="-"?(n=n.slice(1),-1):1;else{if(i==10)return k(n,e,r);if(n=rt.call(n).replace(/^\+(?!-)/,""),s.s=n.charAt(0)=="-"?(n=n.replace(/^-(?!-)/,""),-1):1,i!=null?i!=(i|0)&&y||(o=!(i>=2&&i<65))?(f(i,2),w=g.test(n)):(b="["+d.slice(0,i=i|0)+"]+",n=n.replace(/\.$/,"").replace(/^\./,"0."),(w=new RegExp("^"+b+"(?:\\."+b+")?$",i<37?"i":"").test(n))?(a&&(n.replace(/^0\.0*|\./,"").length>15&&f(p,0),a=!a),n=tt(n,10,i,s.s)):n!="Infinity"&&n!="NaN"&&(f(p,1,i),n="NaN")):w=g.test(n),!w){s.c=s.e=null;n!="Infinity"&&(n!="NaN"&&f(p,3),s.s=null);u=0;return}}for((c=n.indexOf("."))>-1&&(n=n.replace(".","")),(l=n.search(/e/i))>0?(c<0&&(c=l),c+=+n.slice(l+1),n=n.substring(0,l)):c<0&&(c=n.length),l=0;n.charAt(l)=="0";l++);if(i=n.length,a&&i>15&&n.slice(l).length>15&&f(p,0),u=0,(c-=l+1)>h)s.c=s.e=null;else if(l==i||c<v)s.c=[s.e=0];else{for(;n.charAt(--i)=="0";);for(s.e=c,s.c=[],c=0;l<=i;s.c[c++]=+n.charAt(l++));}}function f(n,t,i,r,f,e){if(y){var c,s=["new BigNumber","cmp","div","eq","gt","gte","lt","lte","minus","mod","plus","times","toFr"][u?u<0?-u:u:1/u<0?1:0]+"()",h=o?" out of range":" not a"+(f?" non-zero":"n")+" integer";h=([s+" number type has more than 15 significant digits",s+" not a base "+i+" number",s+" base"+h,s+" not a number"][t]||i+"() "+t+(e?" not a boolean or binary digit":h+(r?" or not ["+(o?" negative, positive":" integer, integer")+" ]":"")))+": "+n;o=u=0;c=new Error(h);c.name="BigNumber Error";throw c;}}function tt(n,i,r,u){function h(n,t){var u,e=0,s=n.length,o,f=[0];for(t=t||r;e<s;e++){for(o=f.length,u=0;u<o;f[u]*=t,u++);for(f[0]+=d.indexOf(n.charAt(e)),u=0;u<f.length;u++)f[u]>i-1&&(f[u+1]==null&&(f[u+1]=0),f[u+1]+=f[u]/i^0,f[u]%=i)}return f.reverse()}function o(n){for(var t=0,r=n.length,i="";t<r;i+=d.charAt(n[t++]));return i}var e,c,l,f,s,a;if(r<37&&(n=n.toLowerCase()),(e=n.indexOf("."))>-1)if(e=n.length-e-1,c=h(new t(r).pow(e).toF(),10),f=n.split("."),l=h(f[1]),f=h(f[0]),a=it(l,c,l.length-c.length,u,i,f[f.length-1]&1),s=a.c,e=a.e){for(;++e;s.unshift(0));n=o(f)+"."+o(s)}else s[0]?f[e=f.length-1]<i-1?(++f[e],n=o(f)):n=new t(o(f),i).plus(p).toS(i):n=o(f);else n=o(h(n));return n}function it(n,i,r,u,f,o){var y,d,k,w,a,rt=i.slice(),g=y=i.length,ut=n.length,s=n.slice(0,y),c=s.length,l=new t(p),nt=l.c=[],tt=0,it=e+(l.e=r)+1;for(l.s=u,u=it<0?0:it;c++<y;s.push(0));rt.unshift(0);do{for(k=0;k<f;k++){if(y!=(c=s.length))w=y>c?1:-1;else for(a=-1,w=0;++a<y;)if(i[a]!=s[a]){w=i[a]>s[a]?1:-1;break}if(w<0){for(d=c==y?i:rt;c;){if(s[--c]<d[c]){for(a=c;a&&!s[--a];s[a]=f-1);--s[a];s[c]+=f}s[c]-=d[c]}for(;!s[0];s.shift());}else break}nt[tt++]=w?k:++k;s[0]&&w?s[c]=n[g]||0:s=[n[g]]}while((g++<ut||s[0]!=null)&&u--);return nt[0]||tt==1||(--l.e,nt.shift()),tt>it&&b(l,e,f,o,s[0]!=null),l.e>h?l.c=l.e=null:l.e<v&&(l.c=[l.e=0]),l}function w(n,i,r){var u=i-(n=new t(n)).e,f=n.c;if(!f)return n.toS();for(f.length>++i&&b(n,u,10),u=f[0]==0?u+1:r?i:n.e+u+1;f.length<u;f.push(0));return u=n.e,r==1||r==2&&(--i<u||u<=c)?(n.s<0&&f[0]?"-":"")+(f.length>1?(f.splice(1,0,"."),f.join("")):f[0])+(u<0?"e":"e+")+u:n.toS()}function b(n,t,i,u,f){var e=n.c,s=n.s<0,c=i/2,o=n.e+t+1,h=e[o],l=f||o<0||e[o+1]!=null;if(f=r<4?(h!=null||l)&&(r==0||r==2&&!s||r==3&&s):h>c||h==c&&(r==4||l||r==6&&(e[o-1]&1||!t&&u)||r==7&&!s||r==8&&s),o<1||!e[0])return e.length=0,e.push(0),f?(e[0]=1,n.e=-t):n.e=0,n;if(e.length=o--,f)for(--i;++e[o]>i;)e[o]=0,o--||(++n.e,e.unshift(1));for(o=e.length;!e[--o];e.pop());return n}function k(n,i,u){var f=r;return r=u,n=new t(n),n.c&&b(n,i,10),r=f,n}var s=1e9,nt=1e6,e=20,r=4,c=-7,a=21,v=-s,h=s,y=!0,l=parseInt,i=t.prototype,d="0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ$_",o,u=0,g=/^-?(\d+(\.\d*)?|\.\d+)(e[+-]?\d+)?$/i,rt=String.prototype.trim||function(){return this.replace(/^\s+|\s+$/g,"")},p=t(1);t.ROUND_UP=0;t.ROUND_DOWN=1;t.ROUND_CEIL=2;t.ROUND_FLOOR=3;t.ROUND_HALF_UP=4;t.ROUND_HALF_DOWN=5;t.ROUND_HALF_EVEN=6;t.ROUND_HALF_CEIL=7;t.ROUND_HALF_FLOOR=8;t.config=function(){var n,t,g=0,p={},d=arguments,k=d[0],w="config",i=function(n,t,i){return!((o=n<t||n>i)||l(n)!=n&&n!==0)},b=k&&typeof k=="object"?function(){if(k.hasOwnProperty(t))return(n=k[t])!=null}:function(){if(d.length>g)return(n=d[g++])!=null};return b(t="DECIMAL_PLACES")&&(i(n,0,s)?e=n|0:f(n,t,w)),p[t]=e,b(t="ROUNDING_MODE")&&(i(n,0,8)?r=n|0:f(n,t,w)),p[t]=r,b(t="EXPONENTIAL_AT")&&(i(n,-s,s)?c=-(a=~~(n<0?-n:+n)):!o&&n&&i(n[0],-s,0)&&i(n[1],0,s)?(c=~~n[0],a=~~n[1]):f(n,t,w,1)),p[t]=[c,a],b(t="RANGE")&&(i(n,-s,s)&&~~n?v=-(h=~~(n<0?-n:+n)):!o&&n&&i(n[0],-s,-1)&&i(n[1],1,s)?(v=~~n[0],h=~~n[1]):f(n,t,w,1,1)),p[t]=[v,h],b(t="ERRORS")&&(n===!!n||n===1||n===0?l=(o=u=0,y=!!n)?parseInt:parseFloat:f(n,t,w,0,0,1)),p[t]=y,p};i.abs=i.absoluteValue=function(){var n=new t(this);return n.s<0&&(n.s=1),n};i.ceil=function(){return k(this,0,2)};i.comparedTo=i.cmp=function(n,i){var f,l=this,e=l.c,o=(u=-u,n=new t(n,i)).c,r=l.s,c=n.s,s=l.e,h=n.e;if(!r||!c)return null;if(f=e&&!e[0],i=o&&!o[0],f||i)return f?i?0:-c:r;if(r!=c)return r;if(f=r<0,i=s==h,!e||!o)return i?0:!e^f?1:-1;if(!i)return s>h^f?1:-1;for(r=-1,c=(s=e.length)<(h=o.length)?s:h;++r<c;)if(e[r]!=o[r])return e[r]>o[r]^f?1:-1;return s==h?0:s>h^f?1:-1};i.dividedBy=i.div=function(n,i){var r=this.c,o=this.e,s=this.s,f=(u=2,n=new t(n,i)).c,h=n.e,c=n.s,e=s==c?1:-1;return!o&&(!r||!r[0])||!h&&(!f||!f[0])?new t(!s||!c||(r?f&&r[0]==f[0]:!f)?NaN:r&&r[0]==0||!f?e*0:e/0):it(r,f,o-h,e,10)};i.equals=i.eq=function(n,t){return u=3,this.cmp(n,t)===0};i.floor=function(){return k(this,0,3)};i.greaterThan=i.gt=function(n,t){return u=4,this.cmp(n,t)>0};i.greaterThanOrEqualTo=i.gte=function(n,t){return u=5,(t=this.cmp(n,t))==1||t===0};i.isFinite=i.isF=function(){return!!this.c};i.isNaN=function(){return!this.s};i.isNegative=i.isNeg=function(){return this.s<0};i.isZero=i.isZ=function(){return!!this.c&&this.c[0]==0};i.lessThan=i.lt=function(n,t){return u=6,this.cmp(n,t)<0};i.lessThanOrEqualTo=i.lte=function(n,t){return u=7,(t=this.cmp(n,t))==-1||t===0};i.minus=function(n,i){var h,l,a,y,c=this,o=c.s;if(i=(u=8,n=new t(n,i)).s,!o||!i)return new t(NaN);if(o!=i)return n.s=-i,c.plus(n);var f=c.c,p=c.e,e=n.c,s=n.e;if(!p||!s){if(!f||!e)return f?(n.s=-i,n):new t(e?c:NaN);if(!f[0]||!e[0])return e[0]?(n.s=-i,n):new t(f[0]?c:r==3?-0:0)}if(f=f.slice(),o=p-s){for(h=(y=o<0)?(o=-o,f):(s=p,e),h.reverse(),i=o;i--;h.push(0));h.reverse()}else for(a=((y=f.length<e.length)?f:e).length,o=i=0;i<a;i++)if(f[i]!=e[i]){y=f[i]<e[i];break}if(y&&(h=f,f=e,e=h,n.s=-n.s),(i=-((a=f.length)-e.length))>0)for(;i--;f[a++]=0);for(i=e.length;i>o;){if(f[--i]<e[i]){for(l=i;l&&!f[--l];f[l]=9);--f[l];f[i]+=10}f[i]-=e[i]}for(;f[--a]==0;f.pop());for(;f[0]==0;f.shift(),--s);return(s<v||!f[0])&&(f[0]||(n.s=r==3?-1:1),f=[s=0]),n.c=f,n.e=s,n};i.modulo=i.mod=function(n,i){var f=this,h=f.c,c=(u=9,n=new t(n,i)).c,o=f.s,s=n.s;return(i=!o||!s||c&&!c[0],i||h&&!h[0])?new t(i?NaN:f):(f.s=n.s=1,i=n.cmp(f)==1,f.s=o,n.s=s,i?new t(f):(o=e,s=r,e=0,r=1,f=f.div(n),e=o,r=s,this.minus(f.times(n))))};i.negated=i.neg=function(){var n=new t(this);return n.s=-n.s||null,n};i.plus=function(n,i){var o,c=this,f=c.s;if(i=(u=10,n=new t(n,i)).s,!f||!i)return new t(NaN);if(f!=i)return n.s=-i,c.minus(n);var l=c.e,r=c.c,s=n.e,e=n.c;if(!l||!s){if(!r||!e)return new t(f/0);if(!r[0]||!e[0])return e[0]?n:new t(r[0]?c:f*0)}if(r=r.slice(),f=l-s){for(o=f>0?(s=l,e):(f=-f,r),o.reverse();f--;o.push(0));o.reverse()}for(r.length-e.length<0&&(o=e,e=r,r=o),f=e.length,i=0;f;i=(r[--f]=r[f]+e[f]+i)/10^0,r[f]%=10);for(i&&(r.unshift(i),++s>h&&(r=s=null)),f=r.length;r[--f]==0;r.pop());return n.c=r,n.e=s,n};i.toPower=i.pow=function(n){var i=n*0==0?n|0:n,r=new t(this),u=new t(p);if(((o=n<-nt||n>nt)&&(i=n/0)||l(n)!=n&&n!==0&&!(i=NaN))&&!f(n,"exponent","pow")||!i)return new t(Math.pow(r.toS(),i));for(i=i<0?-i:i;;){if(i&1&&(u=u.times(r)),i>>=1,!i)break;r=r.times(r)}return n<0?p.div(u):u};i.round=function(n,t){return n=n==null||((o=n<0||n>s)||l(n)!=n)&&!f(n,"decimal places","round")?0:n|0,t=t==null||((o=t<0||t>8)||l(t)!=t&&t!==0)&&!f(t,"mode","round")?r:t|0,k(this,n,t)};i.squareRoot=i.sqrt=function(){var o,u,c,s,h=this,n=h.c,i=h.s,f=h.e,l=e,a=r,v=new t("0.5");if(i!==1||!n||!n[0])return new t(!i||i<0&&(!n||n[0])?NaN:n?h:1/0);for(i=Math.sqrt(h.toS()),r=1,i==0||i==1/0?(o=n.join(""),o.length+f&1||(o+="0"),u=new t(Math.sqrt(o)+""),u.c||(u.c=[1]),u.e=((f+1)/2|0)-(f<0||f&1)):u=new t(o=i.toString()),c=u.e,i=c+(e+=4),i<3&&(i=0),f=i;;)if(s=u,u=v.times(s.plus(h.div(s))),s.c.slice(0,i).join("")===u.c.slice(0,i).join(""))if(n=u.c,i=i-(o&&u.e<c),n[i]==9&&n[i-1]==9&&n[i-2]==9&&(n[i-3]==9||o&&n[i-3]==4)){if(o&&n[i-3]==9&&(s=u.round(l,0),s.times(s).eq(h)))return r=a,e=l,s;e+=4;i+=4;o=""}else{if(!n[f]&&!n[f-1]&&!n[f-2]&&(!n[f-3]||n[f-3]==5)&&(n.length>f-2&&(n.length=f-2),!u.times(u).eq(h))){while(n.length<f-3)n.push(0);n[f-3]++}return r=a,b(u,e=l,10),u}};i.times=function(n,i){var f,l=this,e=l.c,o=(u=11,n=new t(n,i)).c,s=l.e,r=n.e,c=l.s;if(n.s=c==(i=n.s)?1:-1,!s&&(!e||!e[0])||!r&&(!o||!o[0]))return new t(!c||!i||e&&!e[0]&&!o||o&&!o[0]&&!e?NaN:!e||!o?n.s/0:n.s*0);for(n.e=s+r,(c=e.length)<(i=o.length)&&(f=e,e=o,o=f,r=c,c=i,i=r),r=c+i,f=[];r--;f.push(0));for(s=i-1;s>-1;s--){for(i=0,r=c+s;r>s;i=f[r]+o[s]*e[r-s-1]+i,f[r--]=i%10|0,i=i/10|0);i&&(f[r]=(f[r]+i)%10)}for(i&&++n.e,f[0]||f.shift(),r=f.length;!f[--r];f.pop());return n.c=n.e>h?n.e=null:n.e<v?[n.e=0]:f,n};i.toExponential=i.toE=function(n){return w(this,(n==null||((o=n<0||n>s)||l(n)!=n&&n!==0)&&!f(n,"decimal places","toE"))&&this.c?this.c.length-1:n|0,1)};i.toFixed=i.toF=function(n){var u,t,r,i=this;return n==null||((o=n<0||n>s)||l(n)!=n&&n!==0)&&!f(n,"decimal places","toF")||(r=i.e+(n|0)),u=c,n=a,c=-(a=1/0),r==t?t=i.toS():(t=w(i,r),i.s<0&&i.c&&(i.c[0]?t.indexOf("-")<0&&(t="-"+t):t=t.replace(/^-/,""))),c=u,a=n,t};i.toFraction=i.toFr=function(n){var k,nt,c,l,i,s,d,a=l=new t(p),v=c=new t("0"),w=this,g=w.c,tt=h,it=e,rt=r,b=new t(p);if(!g)return w.toS();for(d=b.e=g.length-w.e-1,(n==null||(!(u=12,s=new t(n)).s||(o=s.cmp(a)<0||!s.c)||y&&s.e<s.c.length-1)&&!f(n,"max denominator","toFr")||(n=s).cmp(b)>0)&&(n=d>0?b:a),h=1/0,s=new t(g.join("")),e=0,r=1;;){if(k=s.div(b),i=l.plus(k.times(v)),i.cmp(n)==1)break;l=v;v=i;a=c.plus(k.times(i=a));c=i;b=s.minus(k.times(i=b));s=i}return i=n.minus(l).div(v),c=c.plus(i.times(a)),l=l.plus(i.times(v)),c.s=a.s=w.s,e=d*2,r=rt,nt=a.div(v).minus(w).abs().cmp(c.div(l).minus(w).abs())<1?[a.toS(),v.toS()]:[c.toS(),l.toS()],h=tt,e=it,nt};i.toPrecision=i.toP=function(n){return n==null||((o=n<1||n>s)||l(n)!=n)&&!f(n,"precision","toP")?this.toS():w(this,--n|0,2)};i.toString=i.toS=function(n){var u,t,e,r=this,i=r.e;if(i===null)t=r.s?"Infinity":"NaN";else{if(n===u&&(i<=c||i>=a))return w(r,r.c.length-1,1);if(t=r.c.join(""),i<0){for(;++i;t="0"+t);t="0."+t}else if(e=t.length,i>0)if(++i>e)for(i-=e;i--;t+="0");else i<e&&(t=t.slice(0,i)+"."+t.slice(i));else if(u=t.charAt(0),e>1)t=u+"."+t.slice(1);else if(u=="0")return u;if(n!=null)if((o=!(n>=2&&n<65))||n!=(n|0)&&y)f(n,"base","toS");else if(t=tt(t,n|0,10,r.s),t=="0")return t}return r.s<0?"-"+t:t};i.toNumber=i.toN=function(){var n=this;return+n||(n.s?0*n.s:NaN)};i.valueOf=function(){return this.toS()};typeof module!="undefined"&&module.exports?module.exports=t:typeof define=="function"&&define.amd?define(function(){return t}):n.BigNumber=t})(this)
\ No newline at end of file
+/*! bignumber.js v1.5.0 https://github.com/MikeMcl/bignumber.js/LICENCE */
+(function(n){"use strict";function i(n,t){var c,l,a,b,w,p,s=this;if(!(s instanceof i))return new i(n,t);if(n instanceof i)if(u=0,t!==c)n+="";else{s.s=n.s;s.e=n.e;s.c=(n=n.c)?n.slice():n;return}if(typeof n!="string"&&(n=(a=typeof n=="number"||Object.prototype.toString.call(n)=="[object Number]")&&n===0&&1/n<0?"-0":n+""),p=n,t===c&&g.test(n))s.s=n.charAt(0)=="-"?(n=n.slice(1),-1):1;else{if(t==10)return k(n,e,r);if(n=rt.call(n).replace(/^\+(?!-)/,""),s.s=n.charAt(0)=="-"?(n=n.replace(/^-(?!-)/,""),-1):1,t!=null?t!=(t|0)&&y||(o=!(t>=2&&t<65))?(f(t,2),w=g.test(n)):(b="["+d.slice(0,t=t|0)+"]+",n=n.replace(/\.$/,"").replace(/^\./,"0."),(w=new RegExp("^"+b+"(?:\\."+b+")?$",t<37?"i":"").test(n))?(a&&(n.replace(/^0\.0*|\./,"").length>15&&f(p,0),a=!a),n=tt(n,10,t,s.s)):n!="Infinity"&&n!="NaN"&&(f(p,1,t),n="NaN")):w=g.test(n),!w){s.c=s.e=null;n!="Infinity"&&(n!="NaN"&&f(p,3),s.s=null);u=0;return}}for((c=n.indexOf("."))>-1&&(n=n.replace(".","")),(l=n.search(/e/i))>0?(c<0&&(c=l),c+=+n.slice(l+1),n=n.substring(0,l)):c<0&&(c=n.length),l=0;n.charAt(l)=="0";l++);if(t=n.length,a&&t>15&&n.slice(l).length>15&&f(p,0),u=0,(c-=l+1)>h)s.c=s.e=null;else if(l==t||c<v)s.c=[s.e=0];else{for(;n.charAt(--t)=="0";);for(s.e=c,s.c=[],c=0;l<=t;s.c[c++]=+n.charAt(l++));}}function f(n,t,i,r,f,e){if(y){var c,s=["new BigNumber","cmp","div","eq","gt","gte","lt","lte","minus","mod","plus","times","toFr"][u?u<0?-u:u:1/u<0?1:0]+"()",h=o?" out of range":" not a"+(f?" non-zero":"n")+" integer";h=([s+" number type has more than 15 significant digits",s+" not a base "+i+" number",s+" base"+h,s+" not a number"][t]||i+"() "+t+(e?" not a boolean or binary digit":h+(r?" or not ["+(o?" negative, positive":" integer, integer")+" ]":"")))+": "+n;o=u=0;c=new Error(h);c.name="BigNumber Error";throw c;}}function tt(n,t,r,u){function h(n,i){var u,e=0,s=n.length,o,f=[0];for(i=i||r;e<s;e++){for(o=f.length,u=0;u<o;f[u]*=i,u++);for(f[0]+=d.indexOf(n.charAt(e)),u=0;u<f.length;u++)f[u]>t-1&&(f[u+1]==null&&(f[u+1]=0),f[u+1]+=f[u]/t^0,f[u]%=t)}return f.reverse()}function o(n){for(var t=0,r=n.length,i="";t<r;i+=d.charAt(n[t++]));return i}var e,c,l,f,s,a;if(r<37&&(n=n.toLowerCase()),(e=n.indexOf("."))>-1)if(e=n.length-e-1,c=h(new i(r).pow(e).toF(),10),f=n.split("."),l=h(f[1]),f=h(f[0]),a=it(l,c,l.length-c.length,u,t,f[f.length-1]&1),s=a.c,e=a.e){for(;++e;s.unshift(0));n=o(f)+"."+o(s)}else s[0]?f[e=f.length-1]<t-1?(++f[e],n=o(f)):n=new i(o(f),t).plus(p).toS(t):n=o(f);else n=o(h(n));return n}function it(n,t,r,u,f,o){var y,d,k,w,a,rt=t.slice(),g=y=t.length,ut=n.length,s=n.slice(0,y),c=s.length,l=new i(p),nt=l.c=[],tt=0,it=e+(l.e=r)+1;for(l.s=u,u=it<0?0:it;c++<y;s.push(0));rt.unshift(0);do{for(k=0;k<f;k++){if(y!=(c=s.length))w=y>c?1:-1;else for(a=-1,w=0;++a<y;)if(t[a]!=s[a]){w=t[a]>s[a]?1:-1;break}if(w<0){for(d=c==y?t:rt;c;){if(s[--c]<d[c]){for(a=c;a&&!s[--a];s[a]=f-1);--s[a];s[c]+=f}s[c]-=d[c]}for(;!s[0];s.shift());}else break}nt[tt++]=w?k:++k;s[0]&&w?s[c]=n[g]||0:s=[n[g]]}while((g++<ut||s[0]!=null)&&u--);return nt[0]||tt==1||(--l.e,nt.shift()),tt>it&&b(l,e,f,o,s[0]!=null),l.e>h?l.c=l.e=null:l.e<v&&(l.c=[l.e=0]),l}function w(n,t,r){var u=t-(n=new i(n)).e,f=n.c;if(!f)return n.toS();for(f.length>++t&&b(n,u,10),u=f[0]==0?u+1:r?t:n.e+u+1;f.length<u;f.push(0));return u=n.e,r==1||r==2&&(--t<u||u<=c)?(n.s<0&&f[0]?"-":"")+(f.length>1?(f.splice(1,0,"."),f.join("")):f[0])+(u<0?"e":"e+")+u:n.toS()}function b(n,t,i,u,f){var e=n.c,s=n.s<0,c=i/2,o=n.e+t+1,h=e[o],l=f||o<0||e[o+1]!=null;if(f=r<4?(h!=null||l)&&(r==0||r==2&&!s||r==3&&s):h>c||h==c&&(r==4||l||r==6&&(e[o-1]&1||!t&&u)||r==7&&!s||r==8&&s),o<1||!e[0])return e.length=0,e.push(0),f?(e[0]=1,n.e=-t):n.e=0,n;if(e.length=o--,f)for(--i;++e[o]>i;)e[o]=0,o--||(++n.e,e.unshift(1));for(o=e.length;!e[--o];e.pop());return n}function k(n,t,u){var f=r;return r=u,n=new i(n),n.c&&b(n,t,10),r=f,n}var s=1e9,nt=1e6,e=20,r=4,c=-7,a=21,v=-s,h=s,y=!0,l=parseInt,t=i.prototype,d="0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ$_",o,u=0,g=/^-?(\d+(\.\d*)?|\.\d+)(e[+-]?\d+)?$/i,rt=String.prototype.trim||function(){return this.replace(/^\s+|\s+$/g,"")},p=i(1);i.ROUND_UP=0;i.ROUND_DOWN=1;i.ROUND_CEIL=2;i.ROUND_FLOOR=3;i.ROUND_HALF_UP=4;i.ROUND_HALF_DOWN=5;i.ROUND_HALF_EVEN=6;i.ROUND_HALF_CEIL=7;i.ROUND_HALF_FLOOR=8;i.config=function(){var n,t,g=0,p={},d=arguments,k=d[0],w="config",i=function(n,t,i){return!((o=n<t||n>i)||l(n)!=n&&n!==0)},b=k&&typeof k=="object"?function(){if(k.hasOwnProperty(t))return(n=k[t])!=null}:function(){if(d.length>g)return(n=d[g++])!=null};return b(t="DECIMAL_PLACES")&&(i(n,0,s)?e=n|0:f(n,t,w)),p[t]=e,b(t="ROUNDING_MODE")&&(i(n,0,8)?r=n|0:f(n,t,w)),p[t]=r,b(t="EXPONENTIAL_AT")&&(i(n,-s,s)?c=-(a=~~(n<0?-n:+n)):!o&&n&&i(n[0],-s,0)&&i(n[1],0,s)?(c=~~n[0],a=~~n[1]):f(n,t,w,1)),p[t]=[c,a],b(t="RANGE")&&(i(n,-s,s)&&~~n?v=-(h=~~(n<0?-n:+n)):!o&&n&&i(n[0],-s,-1)&&i(n[1],1,s)?(v=~~n[0],h=~~n[1]):f(n,t,w,1,1)),p[t]=[v,h],b(t="ERRORS")&&(n===!!n||n===1||n===0?l=(o=u=0,y=!!n)?parseInt:parseFloat:f(n,t,w,0,0,1)),p[t]=y,p};t.abs=t.absoluteValue=function(){var n=new i(this);return n.s<0&&(n.s=1),n};t.ceil=function(){return k(this,0,2)};t.comparedTo=t.cmp=function(n,t){var f,l=this,e=l.c,o=(u=-u,n=new i(n,t)).c,r=l.s,c=n.s,s=l.e,h=n.e;if(!r||!c)return null;if(f=e&&!e[0],t=o&&!o[0],f||t)return f?t?0:-c:r;if(r!=c)return r;if(f=r<0,t=s==h,!e||!o)return t?0:!e^f?1:-1;if(!t)return s>h^f?1:-1;for(r=-1,c=(s=e.length)<(h=o.length)?s:h;++r<c;)if(e[r]!=o[r])return e[r]>o[r]^f?1:-1;return s==h?0:s>h^f?1:-1};t.decimalPlaces=t.dp=function(){var n;return this.c?(n=this.c.length-this.e-1,n<0?0:n):null};t.dividedBy=t.div=function(n,t){var r=this.c,o=this.e,s=this.s,f=(u=2,n=new i(n,t)).c,h=n.e,c=n.s,e=s==c?1:-1;return!o&&(!r||!r[0])||!h&&(!f||!f[0])?new i(!s||!c||(r?f&&r[0]==f[0]:!f)?NaN:r&&r[0]==0||!f?e*0:e/0):it(r,f,o-h,e,10)};t.equals=t.eq=function(n,t){return u=3,this.cmp(n,t)===0};t.floor=function(){return k(this,0,3)};t.greaterThan=t.gt=function(n,t){return u=4,this.cmp(n,t)>0};t.greaterThanOrEqualTo=t.gte=function(n,t){return u=5,(t=this.cmp(n,t))==1||t===0};t.isFinite=t.isF=function(){return!!this.c};t.isNaN=function(){return!this.s};t.isNegative=t.isNeg=function(){return this.s<0};t.isZero=t.isZ=function(){return!!this.c&&this.c[0]==0};t.lessThan=t.lt=function(n,t){return u=6,this.cmp(n,t)<0};t.lessThanOrEqualTo=t.lte=function(n,t){return u=7,(t=this.cmp(n,t))==-1||t===0};t.minus=function(n,t){var h,l,a,y,c=this,o=c.s;if(t=(u=8,n=new i(n,t)).s,!o||!t)return new i(NaN);if(o!=t)return n.s=-t,c.plus(n);var f=c.c,p=c.e,e=n.c,s=n.e;if(!p||!s){if(!f||!e)return f?(n.s=-t,n):new i(e?c:NaN);if(!f[0]||!e[0])return e[0]?(n.s=-t,n):new i(f[0]?c:r==3?-0:0)}if(f=f.slice(),o=p-s){for(h=(y=o<0)?(o=-o,f):(s=p,e),h.reverse(),t=o;t--;h.push(0));h.reverse()}else for(a=((y=f.length<e.length)?f:e).length,o=t=0;t<a;t++)if(f[t]!=e[t]){y=f[t]<e[t];break}if(y&&(h=f,f=e,e=h,n.s=-n.s),(t=-((a=f.length)-e.length))>0)for(;t--;f[a++]=0);for(t=e.length;t>o;){if(f[--t]<e[t]){for(l=t;l&&!f[--l];f[l]=9);--f[l];f[t]+=10}f[t]-=e[t]}for(;f[--a]==0;f.pop());for(;f[0]==0;f.shift(),--s);return(s<v||!f[0])&&(f[0]||(n.s=r==3?-1:1),f=[s=0]),n.c=f,n.e=s,n};t.modulo=t.mod=function(n,t){var f=this,h=f.c,c=(u=9,n=new i(n,t)).c,o=f.s,s=n.s;return(t=!o||!s||c&&!c[0],t||h&&!h[0])?new i(t?NaN:f):(f.s=n.s=1,t=n.cmp(f)==1,f.s=o,n.s=s,t?new i(f):(o=e,s=r,e=0,r=1,f=f.div(n),e=o,r=s,this.minus(f.times(n))))};t.negated=t.neg=function(){var n=new i(this);return n.s=-n.s||null,n};t.plus=function(n,t){var o,c=this,f=c.s;if(t=(u=10,n=new i(n,t)).s,!f||!t)return new i(NaN);if(f!=t)return n.s=-t,c.minus(n);var l=c.e,r=c.c,s=n.e,e=n.c;if(!l||!s){if(!r||!e)return new i(f/0);if(!r[0]||!e[0])return e[0]?n:new i(r[0]?c:f*0)}if(r=r.slice(),f=l-s){for(o=f>0?(s=l,e):(f=-f,r),o.reverse();f--;o.push(0));o.reverse()}for(r.length-e.length<0&&(o=e,e=r,r=o),f=e.length,t=0;f;t=(r[--f]=r[f]+e[f]+t)/10^0,r[f]%=10);for(t&&(r.unshift(t),++s>h&&(r=s=null)),f=r.length;r[--f]==0;r.pop());return n.c=r,n.e=s,n};t.toPower=t.pow=function(n){var t=n*0==0?n|0:n,r=new i(this),u=new i(p);if(((o=n<-nt||n>nt)&&(t=n/0)||l(n)!=n&&n!==0&&!(t=NaN))&&!f(n,"exponent","pow")||!t)return new i(Math.pow(r.toS(),t));for(t=t<0?-t:t;;){if(t&1&&(u=u.times(r)),t>>=1,!t)break;r=r.times(r)}return n<0?p.div(u):u};t.round=function(n,t){return n=n==null||((o=n<0||n>s)||l(n)!=n)&&!f(n,"decimal places","round")?0:n|0,t=t==null||((o=t<0||t>8)||l(t)!=t&&t!==0)&&!f(t,"mode","round")?r:t|0,k(this,n,t)};t.squareRoot=t.sqrt=function(){var o,u,c,s,h=this,n=h.c,t=h.s,f=h.e,l=e,a=r,v=new i("0.5");if(t!==1||!n||!n[0])return new i(!t||t<0&&(!n||n[0])?NaN:n?h:1/0);for(t=Math.sqrt(h.toS()),r=1,t==0||t==1/0?(o=n.join(""),o.length+f&1||(o+="0"),u=new i(Math.sqrt(o)+""),u.c||(u.c=[1]),u.e=((f+1)/2|0)-(f<0||f&1)):u=new i(o=t.toString()),c=u.e,t=c+(e+=4),t<3&&(t=0),f=t;;)if(s=u,u=v.times(s.plus(h.div(s))),s.c.slice(0,t).join("")===u.c.slice(0,t).join(""))if(n=u.c,t=t-(o&&u.e<c),n[t]==9&&n[t-1]==9&&n[t-2]==9&&(n[t-3]==9||o&&n[t-3]==4)){if(o&&n[t-3]==9&&(s=u.round(l,0),s.times(s).eq(h)))return r=a,e=l,s;e+=4;t+=4;o=""}else{if(!n[f]&&!n[f-1]&&!n[f-2]&&(!n[f-3]||n[f-3]==5)&&(n.length>f-2&&(n.length=f-2),!u.times(u).eq(h))){while(n.length<f-3)n.push(0);n[f-3]++}return r=a,b(u,e=l,10),u}};t.times=function(n,t){var f,l=this,e=l.c,o=(u=11,n=new i(n,t)).c,s=l.e,r=n.e,c=l.s;if(n.s=c==(t=n.s)?1:-1,!s&&(!e||!e[0])||!r&&(!o||!o[0]))return new i(!c||!t||e&&!e[0]&&!o||o&&!o[0]&&!e?NaN:!e||!o?n.s/0:n.s*0);for(n.e=s+r,(c=e.length)<(t=o.length)&&(f=e,e=o,o=f,r=c,c=t,t=r),r=c+t,f=[];r--;f.push(0));for(s=t-1;s>-1;s--){for(t=0,r=c+s;r>s;t=f[r]+o[s]*e[r-s-1]+t,f[r--]=t%10|0,t=t/10|0);t&&(f[r]=(f[r]+t)%10)}for(t&&++n.e,f[0]||f.shift(),r=f.length;!f[--r];f.pop());return n.c=n.e>h?n.e=null:n.e<v?[n.e=0]:f,n};t.toExponential=t.toE=function(n){return w(this,(n==null||((o=n<0||n>s)||l(n)!=n&&n!==0)&&!f(n,"decimal places","toE"))&&this.c?this.c.length-1:n|0,1)};t.toFixed=t.toF=function(n){var u,t,r,i=this;return n==null||((o=n<0||n>s)||l(n)!=n&&n!==0)&&!f(n,"decimal places","toF")||(r=i.e+(n|0)),u=c,n=a,c=-(a=1/0),r==t?t=i.toS():(t=w(i,r),i.s<0&&i.c&&(i.c[0]?t.indexOf("-")<0&&(t="-"+t):t=t.replace(/^-/,""))),c=u,a=n,t};t.toFraction=t.toFr=function(n){var k,nt,c,l,t,s,d,a=l=new i(p),v=c=new i("0"),w=this,g=w.c,tt=h,it=e,rt=r,b=new i(p);if(!g)return w.toS();for(d=b.e=g.length-w.e-1,(n==null||(!(u=12,s=new i(n)).s||(o=s.cmp(a)<0||!s.c)||y&&s.e<s.c.length-1)&&!f(n,"max denominator","toFr")||(n=s).cmp(b)>0)&&(n=d>0?b:a),h=1/0,s=new i(g.join("")),e=0,r=1;;){if(k=s.div(b),t=l.plus(k.times(v)),t.cmp(n)==1)break;l=v;v=t;a=c.plus(k.times(t=a));c=t;b=s.minus(k.times(t=b));s=t}return t=n.minus(l).div(v),c=c.plus(t.times(a)),l=l.plus(t.times(v)),c.s=a.s=w.s,e=d*2,r=rt,nt=a.div(v).minus(w).abs().cmp(c.div(l).minus(w).abs())<1?[a.toS(),v.toS()]:[c.toS(),l.toS()],h=tt,e=it,nt};t.toPrecision=t.toP=function(n){return n==null||((o=n<1||n>s)||l(n)!=n)&&!f(n,"precision","toP")?this.toS():w(this,--n|0,2)};t.toString=t.toS=function(n){var u,t,e,r=this,i=r.e;if(i===null)t=r.s?"Infinity":"NaN";else{if(n===u&&(i<=c||i>=a))return w(r,r.c.length-1,1);if(t=r.c.join(""),i<0){for(;++i;t="0"+t);t="0."+t}else if(e=t.length,i>0)if(++i>e)for(i-=e;i--;t+="0");else i<e&&(t=t.slice(0,i)+"."+t.slice(i));else if(u=t.charAt(0),e>1)t=u+"."+t.slice(1);else if(u=="0")return u;if(n!=null)if((o=!(n>=2&&n<65))||n!=(n|0)&&y)f(n,"base","toS");else if(t=tt(t,n|0,10,r.s),t=="0")return t}return r.s<0?"-"+t:t};t.toNumber=t.toN=function(){var n=this;return+n||(n.s?0*n.s:NaN)};t.valueOf=t.toJSON=function(){return this.toS()};typeof module!="undefined"&&module.exports?module.exports=i:typeof define=="function"&&define.amd?define(function(){return i}):n.BigNumber=i})(this)
\ No newline at end of file
diff --git a/package.json b/package.json
index 2d175cb..54dcd5d 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "bignumber.js",
   "description": "A library for arbitrary-precision decimal and non-decimal arithmetic",
-  "version": "1.4.1",
+  "version": "1.5.0",
   "keywords": [
     "arbitrary",
     "precision",
@@ -31,6 +31,6 @@
   "license": "MIT",
   "scripts": {
     "test": "node ./test/every-test.js",
-    "build": "uglifyjs bignumber.js -c -m -o bignumber.min.js --preamble '/* bignumber.js v1.4.1 https://github.com/MikeMcl/bignumber.js/LICENCE */'"
+    "build": "uglifyjs bignumber.js -c -m -o bignumber.min.js --preamble '/* bignumber.js v1.5.0 https://github.com/MikeMcl/bignumber.js/LICENCE */'"
   }
 }
\ No newline at end of file