switch to vuepress

1 files changed, 636 insertions, 0 deletions

diff --git a/node_modules/math-expression-evaluator/dist/browser/math-expression-evaluator.js b/node_modules/math-expression-evaluator/dist/browser/math-expression-evaluator.js
new file mode 100755
index 00000000..74d8e672
--- /dev/null
+++ b/node_modules/math-expression-evaluator/dist/browser/math-expression-evaluator.js
@@ -0,0 +1,636 @@
+/** math-expression-evaluator version 1.2.17
+ Dated:2017-04-28 */
+
+(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.mexp = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
+var Mexp=require('./postfix_evaluator.js');

+Mexp.prototype.formulaEval = function () {

+	"use strict";

+	var stack=[],pop1,pop2,pop3;

+	var disp=[];

+	var temp='';

+	var arr=this.value;

+	for(var i=0;i<arr.length;i++){

+		if(arr[i].type===1||arr[i].type===3){

+			disp.push({value:arr[i].type===3?arr[i].show:arr[i].value,type:1});

+		}

+		else if(arr[i].type===13){

+			disp.push({value:arr[i].show,type:1});

+		}

+		else if(arr[i].type===0){

+			disp[disp.length-1]={value:arr[i].show+(arr[i].show!="-"?"(":"")+disp[disp.length-1].value+(arr[i].show!="-"?")":""),type:0};

+		}

+		else if(arr[i].type===7){

+			disp[disp.length-1]={value:(disp[disp.length-1].type!=1?"(":"")+disp[disp.length-1].value+(disp[disp.length-1].type!=1?")":"")+arr[i].show,type:7};

+		}

+		else if(arr[i].type===10){

+			pop1=disp.pop();

+			pop2=disp.pop();

+			if(arr[i].show==='P'||arr[i].show==='C')disp.push({value:"<sup>"+pop2.value+"</sup>"+arr[i].show+"<sub>"+pop1.value+"</sub>",type:10});

+			else disp.push({value:(pop2.type!=1?"(":"")+pop2.value+(pop2.type!=1?")":"")+"<sup>"+pop1.value+"</sup>",type:1});

+		}

+		else if(arr[i].type===2||arr[i].type===9){

+			pop1=disp.pop();

+			pop2=disp.pop();

+			disp.push({value:(pop2.type!=1?"(":"")+pop2.value+(pop2.type!=1?")":"")+arr[i].show+(pop1.type!=1?"(":"")+pop1.value+(pop1.type!=1?")":""),type:arr[i].type});

+		}

+		else if(arr[i].type===12){

+			pop1=disp.pop();

+			pop2=disp.pop();

+			pop3=disp.pop();

+			disp.push({value:arr[i].show+"("+pop3.value+","+pop2.value+","+pop1.value+")",type:12});

+		}

+	}

+	return disp[0].value;

+};

+module.exports=Mexp;
+},{"./postfix_evaluator.js":5}],2:[function(require,module,exports){
+var Mexp=require('./math_function.js');

+	function inc(arr,val){

+		for(var i=0;i<arr.length;i++)

+			arr[i]+=val;

+		return arr;

+	}

+	var token=['sin','cos','tan','pi','(',')','P','C',

+		  'asin','acos','atan','7','8','9','int',

+		  'cosh','acosh','ln','^','root','4','5','6','/','!',

+		  'tanh','atanh','Mod','1','2','3','*',

+		  'sinh','asinh','e','log','0','.','+','-',',','Sigma','n','Pi','pow'];

+	var show=['sin','cos','tan','&pi;','(',')','P','C',

+		'asin','acos','atan','7','8','9','Int',

+		'cosh','acosh',' ln','^','root','4','5','6','&divide;','!',

+		'tanh','atanh',' Mod ','1','2','3','&times;',

+		'sinh','asinh','e',' log','0','.','+','-',',','&Sigma;','n','&Pi;','pow'];

+	var eva=[Mexp.math.sin,Mexp.math.cos,Mexp.math.tan,'PI','(',')',Mexp.math.P,Mexp.math.C,

+		Mexp.math.asin,Mexp.math.acos,Mexp.math.atan,'7','8','9',Math.floor,

+		Mexp.math.cosh,Mexp.math.acosh,Math.log,Math.pow,Math.sqrt,'4','5','6',Mexp.math.div,Mexp.math.fact,

+		Mexp.math.tanh,Mexp.math.atanh,Mexp.math.mod,'1','2','3',Mexp.math.mul,

+		Mexp.math.sinh,Mexp.math.asinh,'E',Mexp.math.log,'0','.',Mexp.math.add,Mexp.math.sub,',',Mexp.math.sigma,'n',Mexp.math.Pi,Math.pow];

+	var preced={0:11,1:0,2:3,3:0,4:0,5:0,6:0,7:11,8:11,9:1,10:10,11:0,12:11,13:0};

+	var type=[0,0,0,3,4,5,10,10,

+		0,0,0,1,1,1,0,

+		0,0,0,10,0,1,1,1,2,7,

+		0,0,2,1,1,1,2,

+		0,0,3,0,1,6,9,9,11,12,13,12,8];

+	 /*

+	0 : function with syntax function_name(Maths_exp)

+	1 : numbers

+	2 : binary operators like * / Mod left associate and same precedence

+	3 : Math constant values like e,pi,Cruncher ans

+	4 : opening bracket

+	5 : closing bracket

+	6 : decimal

+	7 : function with syntax (Math_exp)function_name

+	8: function with syntax function_name(Math_exp1,Math_exp2)

+	9 : binary operator like +,-

+	10: binary operator like P C or ^

+	11: ,

+	12: function with , seperated three parameters

+	13: variable of Sigma function

+	 */

+	var type0={0:true,1:true,3:true,4:true,6:true,8:true,9:true,12:true,13:true},//type2:true,type4:true,type9:true,type11:true,type21:true,type22

+	type1={0:true,1:true,2:true,3:true,4:true,5:true,6:true,7:true,8:true,9:true,10:true,11:true,12:true,13:true},//type3:true,type5:true,type7:true,type23

+	type_1={0:true,3:true,4:true,8:true,12:true,13:true},

+	empty={},

+	type_3={0:true,1:true,3:true,4:true,6:true,8:true,12:true,13:true},//type_5:true,type_7:true,type_23

+	type6={1:true},

+	newAr=[[],

+			["1","2","3","7","8","9","4","5","6","+","-","*","/","(",")","^","!","P","C","e","0",".",",","n"],

+			["pi","ln","Pi"],

+			["sin","cos","tan","Del","int","Mod","log","pow"],

+			["asin","acos","atan","cosh","root","tanh","sinh"],

+			["acosh","atanh","asinh","Sigma"]];

+	function match(str1,str2,i,x){

+		for(var f=0;f<x;f++){

+			if (str1[i+f]!==str2[f])

+				return false;

+		}

+		return true;

+	}

+	Mexp.addToken=function(tokens){

+		for(i=0;i<tokens.length;i++){

+			x=tokens[i].token.length;

+			var temp=-1;

+

+			//newAr is a specially designed data structure in which 1D array at location one of 2d array has all string with length 1 2 with 2 and so on

+

+			if (x<newAr.length)	//match to check if token is really huge and not existing

+								//if not checked it will break in next line as undefined index

+				for(y=0;y<newAr[x].length;y++){

+					if (tokens[i].token===newAr[x][y]){

+						temp=token.indexOf(newAr[x][y]);

+						break;

+					}

+				}

+			if (temp===-1) {

+				token.push(tokens[i].token);

+				type.push(tokens[i].type);

+				if(newAr.length<=tokens[i].token.length)

+					newAr[tokens[i].token.length]=[];

+				newAr[tokens[i].token.length].push(tokens[i].token);

+				eva.push(tokens[i].value);

+				show.push(tokens[i].show);

+			}

+			else {

+				token[temp]=tokens[i].token;

+				type[temp]=tokens[i].type;

+				eva[temp]=tokens[i].value;

+				show[temp]=tokens[i].show;

+			}

+		}

+	};

+	Mexp.lex=function(inp,tokens){

+		'use strict';

+		var str=[{type:4,value:"(",show:"(",pre:0}];

+		var ptc=[];	//Parenthesis to close at the beginning is after one token

+		var inpStr=inp;

+		var key;

+        var pcounter=0;

+		var allowed=type0;

+		var bracToClose=0;

+		var asterick=empty;

+		var prevKey='';

+		var i,x,y;

+		if(typeof tokens!=="undefined")

+			Mexp.addToken(tokens);

+		var obj={};

+		for(i=0;i<inpStr.length;i++){

+			if (inpStr[i]==' ') {

+				continue;

+			}

+			key='';

+			sec:for(x=(inpStr.length-i>(newAr.length-2)?newAr.length-1:inpStr.length-i);x>0;x--){

+				for(y=0;y<newAr[x].length;y++){

+					if (match(inpStr,newAr[x][y],i,x)){

+						key=newAr[x][y];

+						break sec;

+					}

+				}

+			}

+			i+=key.length-1;

+			if(key===''){

+				throw(new Mexp.exception("Can't understand after "+inpStr.slice(i)));

+			}

+			var index=token.indexOf(key);

+			var cToken=key;

+			var cType=type[index];

+			var cEv=eva[index];

+			var cPre=preced[cType];

+			var	cShow=show[index];

+			var pre=str[str.length-1];

+			for(j=ptc.length;j--;){	//loop over ptc

+				if(ptc[j]===0){

+					if([0,2,3,5,9,11,12,13].indexOf(cType)!==-1){

+						if(allowed[cType]!==true){

+							throw(new Mexp.exception(key+" is not allowed after "+prevKey));

+						}

+						str.push({value:")",type:5,pre:0,show:")"});

+						allowed=type1;

+						asterick=type_3;

+						inc(ptc,-1).pop();

+					}

+				}

+			}

+			if(allowed[cType]!==true){

+				throw(new Mexp.exception(key+" is not allowed after "+prevKey));

+			}

+			if(asterick[cType]===true){

+				cType=2;

+				cEv=Mexp.math.mul;

+				cShow="&times;";

+				cPre=3;

+				i=i-key.length;

+		 	}

+			obj={value:cEv,type:cType,pre:cPre,show:cShow};

+			if(cType===0){

+				allowed=type0;

+				asterick=empty;

+				inc(ptc,2).push(2);

+				str.push(obj);

+				str.push({value:"(",type:4,pre:0,show:"("});

+			}

+			else if(cType===1){

+				if(pre.type===1){

+					pre.value+=cEv;

+					inc(ptc,1);

+				}

+				else {

+					str.push(obj);

+				}

+				allowed=type1;

+				asterick=type_1;

+			}

+			else if(cType===2){

+				allowed=type0;

+				asterick=empty;

+				inc(ptc,2);

+				str.push(obj);

+			}

+			else if(cType===3){//constant

+				str.push(obj);

+				allowed=type1;

+				asterick=type_3;

+			}

+			else if(cType===4){

+                pcounter+=ptc.length;

+                ptc=[];

+				bracToClose++;

+				allowed=type0;

+				asterick=empty;

+				str.push(obj);

+			}

+			else if(cType===5){

+				if(!bracToClose){

+					throw(new Mexp.exception("Closing parenthesis are more than opening one, wait What!!!"));

+				}

+                while(pcounter--){	//loop over ptc

+    						str.push({value:")",type:5,pre:0,show:")"});

+    			}

+                pcounter=0;

+				bracToClose--;

+				allowed=type1;

+				asterick=type_3;

+				str.push(obj);

+			}

+			else if(cType===6){

+				if(pre.hasDec){

+					throw(new Mexp.exception("Two decimals are not allowed in one number"));

+				}

+				if(pre.type!==1){

+					pre={value:0,type:1,pre:0};	//pre needs to be changed as it will the last value now to be safe in later code

+					str.push(pre);

+					inc(ptc,-1);

+				}

+				allowed=type6;

+				inc(ptc,1);

+				asterick=empty;

+				pre.value+=cEv;

+				pre.hasDec=true;

+			}

+			else if(cType===7){

+				allowed=type1;

+				asterick=type_3;

+				inc(ptc,1);

+				str.push(obj);

+			}

+			if(cType===8){

+				allowed=type0;

+				asterick=empty;

+				inc(ptc,4).push(4);

+				str.push(obj);

+				str.push({value:"(",type:4,pre:0,show:"("});

+			}

+			else if(cType===9){

+				if(pre.type===9){

+					if(pre.value===Mexp.math.add){

+						pre.value=cEv;

+						pre.show=cShow;

+						inc(ptc,1);

+					}

+					else if(pre.value===Mexp.math.sub&&cShow==='-'){

+						pre.value=Mexp.math.add;

+						pre.show='+';

+						inc(ptc,1);

+					}

+				}

+				else if(pre.type!==5&&pre.type!==7&&pre.type!==1&&pre.type!==3&&pre.type!==13){//changesign only when negative is found

+					if(cToken==='-'){//do nothing for + token

+									//don't add with the above if statement as that will run the else statement of parent if on Ctoken +

+						allowed=type0;

+						asterick=empty;

+						inc(ptc,2).push(2);

+						str.push({value:Mexp.math.changeSign,type:0,pre:21,show:"-"});

+						str.push({value:"(",type:4,pre:0,show:"("});

+					}

+				}

+				else{

+					str.push(obj);

+					inc(ptc,2);

+				}

+				allowed=type0;

+				asterick=empty;

+			}

+			else if(cType===10){

+				allowed=type0;

+				asterick=empty;

+				inc(ptc,2);

+				str.push(obj);

+			}

+			else if(cType===11){

+				allowed=type0;

+				asterick=empty;

+				str.push(obj);

+			}

+			else if(cType===12){

+				allowed=type0;

+				asterick=empty;

+				inc(ptc,6).push(6);

+				str.push(obj);

+				str.push({value:"(",type:4,pre:0});

+			}

+			else if(cType===13){

+				allowed=type1;

+				asterick=type_3;

+				str.push(obj);

+			}

+			inc(ptc,-1);

+			prevKey=key;

+		}

+		for(var j=ptc.length;j--;){	//loop over ptc

+			if(ptc[j]===0){

+

+				str.push({value:")",show:")",type:5,pre:3});

+				inc(ptc,-1).pop();

+			}

+		}

+		if (allowed[5]!==true) {

+			throw(new Mexp.exception("complete the expression"));

+		}

+		while(bracToClose--)

+			str.push({value:")",show:")",type:5,pre:3});

+

+		str.push({type:5,value:")",show:")",pre:0});

+//        console.log(str);

+		return new Mexp(str);

+	};

+    module.exports=Mexp;

+
+},{"./math_function.js":3}],3:[function(require,module,exports){
+	var Mexp=function(parsed){

+		this.value=parsed;

+

+	};

+

+	Mexp.math={

+		isDegree:true, //mode of calculator

+		acos:function(x){

+			return (Mexp.math.isDegree?180/Math.PI*Math.acos(x):Math.acos(x));

+		},

+		add:function(a,b){

+			return a+b;

+		},

+		asin:function(x){

+			return (Mexp.math.isDegree?180/Math.PI*Math.asin(x):Math.asin(x));

+		},

+		atan:function(x){

+			return (Mexp.math.isDegree?180/Math.PI*Math.atan(x):Math.atan(x));

+		},

+		acosh:function(x){

+			return Math.log(x+Math.sqrt(x*x-1));

+		},

+		asinh:function(x){

+			return Math.log(x+Math.sqrt(x*x+1));

+		},

+		atanh:function(x){

+			return Math.log((1+x)/(1-x));

+		},

+		C:function(n,r){

+			var pro=1,other=n-r,choice=r;

+			if(choice<other){

+			choice=other;

+			other=r;

+			}

+			for(var i=choice+1;i<=n;i++)

+				pro*=i;

+			return pro/Mexp.math.fact(other);

+		},

+		changeSign:function(x){

+			return -x;

+		},

+		cos:function(x){

+			if(Mexp.math.isDegree)x=Mexp.math.toRadian(x);

+			return Math.cos(x);

+		},

+		cosh:function(x){

+			return (Math.pow(Math.E,x)+Math.pow(Math.E,-1*x))/2;

+		},

+		div:function(a,b){

+		return a/b;

+		},

+		fact:function(n) {

+		if(n%1!==0)return "NAN";

+			var pro=1;

+			for(var i=2;i<=n;i++)

+				pro*=i;

+			return pro;

+		},

+		inverse:function(x){

+			return 1/x;

+		},

+		log:function(i){

+			return Math.log(i)/Math.log(10);

+		},

+		mod:function(a,b){

+		return a%b;

+		},

+		mul:function(a,b){

+		return a*b;

+		},

+		P:function(n,r){var pro=1;

+			 for(var i=Math.floor(n)-Math.floor(r)+1;i<=Math.floor(n);i++)

+					pro*=i;

+					return pro;

+

+		},

+		Pi:function(low,high,ex){

+			var pro=1;

+			for(var i=low;i<=high;i++){

+				pro*=Number(ex.postfixEval({n:i}));

+			}

+			return pro;

+		},

+		pow10x:function(e){

+			var x=1;

+			while(e--){x*=10;}

+			return x;

+		},

+		sigma:function(low,high,ex){

+			var sum=0;

+			for(var i=low;i<=high;i++){

+				sum+=Number(ex.postfixEval({n:i}));

+			}

+			return sum;

+		},

+		sin:function(x){

+			if(Mexp.math.isDegree)x=Mexp.math.toRadian(x);

+			return Math.sin(x);

+		},

+		sinh:function(x){

+			return (Math.pow(Math.E,x)-Math.pow(Math.E,-1*x))/2;

+		},

+		sub:function(a,b){

+		return a-b;

+		},

+		tan:function(x){

+			if(Mexp.math.isDegree)x=Mexp.math.toRadian(x);

+			return Math.tan(x);

+		},

+		tanh:function(x){

+			return Mexp.sinha(x)/Mexp.cosha(x);

+		},

+		toRadian:function(x){

+			return x*Math.PI/180;

+		}

+	};

+	Mexp.exception=function(message){

+		this.message=message;

+	};

+    module.exports=Mexp;
+},{}],4:[function(require,module,exports){
+

+    var Mexp=require('./lexer.js');

+

+	Mexp.prototype.toPostfix = function () {

+		'use strict';

+		var post=[],elem,popped,prep,pre,ele;

+    	var stack=[{value:"(",type:4,pre:0}];

+		var arr=this.value;

+		for (var i=1; i < arr.length; i++) {

+			if(arr[i].type===1||arr[i].type===3||arr[i].type===13){	//if token is number,constant,or n(which is also a special constant in our case)

+				if(arr[i].type===1)

+					arr[i].value=Number(arr[i].value);

+				post.push(arr[i]);

+			}

+			else if(arr[i].type===4){

+				stack.push(arr[i]);

+			}

+			else if(arr[i].type===5){

+				while((popped=stack.pop()).type!==4){

+					post.push(popped);

+				}

+			}

+			else if(arr[i].type===11){

+				while((popped=stack.pop()).type!==4){

+					post.push(popped);

+				}

+				stack.push(popped);

+			}

+			else {

+				elem=arr[i];

+				pre=elem.pre;

+				ele=stack[stack.length-1];

+				prep=ele.pre;

+				var flag=ele.value=='Math.pow'&&elem.value=='Math.pow';

+				if(pre>prep)stack.push(elem);

+				else {

+					while(prep>=pre&&!flag||flag&&pre<prep){

+						popped=stack.pop();

+						ele=stack[stack.length-1];

+						post.push(popped);

+						prep=ele.pre;

+						flag=elem.value=='Math.pow'&&ele.value=='Math.pow';

+					}

+					stack.push(elem);

+				}

+			}

+		}

+		return new Mexp(post);

+	};

+    module.exports=Mexp;
+},{"./lexer.js":2}],5:[function(require,module,exports){
+var Mexp=require('./postfix.js');

+Mexp.prototype.postfixEval = function (UserDefined) {

+	'use strict';

+	UserDefined=UserDefined||{};

+	UserDefined.PI=Math.PI;

+	UserDefined.E=Math.E;

+	var stack=[],pop1,pop2,pop3;

+	var disp=[];

+	var temp='';

+	var arr=this.value;

+	var bool=(typeof UserDefined.n!=="undefined");

+	for(var i=0;i<arr.length;i++){

+		if(arr[i].type===1){

+			stack.push({value:arr[i].value,type:1});

+		}

+		else if(arr[i].type===3){

+			stack.push({value:UserDefined[arr[i].value],type:1});

+		}

+		else if(arr[i].type===0){

+			if(typeof stack[stack.length-1].type==="undefined"){

+				stack[stack.length-1].value.push(arr[i]);

+			}

+			else stack[stack.length-1].value=arr[i].value(stack[stack.length-1].value);

+		}

+		else if(arr[i].type===7){

+			if(typeof stack[stack.length-1].type==="undefined"){

+				stack[stack.length-1].value.push(arr[i]);

+			}

+			else stack[stack.length-1].value=arr[i].value(stack[stack.length-1].value);

+		}

+		else if(arr[i].type===8){

+			pop1=stack.pop();

+			pop2=stack.pop();

+			stack.push({type:1,value:arr[i].value(pop2.value,pop1.value)});

+		}

+		else if(arr[i].type===10){

+			pop1=stack.pop();

+			pop2=stack.pop();

+			if(typeof pop2.type==="undefined"){

+				pop2.value=pop2.concat(pop1);

+				pop2.value.push(arr[i]);

+				stack.push(pop2);

+			}

+			else if (typeof pop1.type==="undefined") {

+				pop1.unshift(pop2);

+				pop1.push(arr[i]);

+				stack.push(pop1);

+			}

+			else{

+				stack.push({type:1,value:arr[i].value(pop2.value,pop1.value)});

+            }

+		}

+		else if(arr[i].type===2||arr[i].type===9){

+			pop1=stack.pop();

+			pop2=stack.pop();

+			if(typeof pop2.type==="undefined"){

+                console.log(pop2);

+				pop2=pop2.concat(pop1);

+				pop2.push(arr[i]);

+				stack.push(pop2);

+			}

+			else if (typeof pop1.type==="undefined") {

+				pop1.unshift(pop2);

+				pop1.push(arr[i]);

+				stack.push(pop1);

+			}

+			else{

+				stack.push({type:1,value:arr[i].value(pop2.value,pop1.value)});

+			}

+		}

+		else if(arr[i].type===12){

+			pop1=stack.pop();

+			if (typeof pop1.type!=="undefined") {

+				pop1=[pop1];

+			}

+			pop2=stack.pop();

+			pop3=stack.pop();

+			stack.push({type:1,value:arr[i].value(pop3.value,pop2.value,new Mexp(pop1))});

+		}

+		else if(arr[i].type===13){

+			if(bool){

+				stack.push({value:UserDefined[arr[i].value],type:3});

+			}

+			else stack.push([arr[i]]);

+		}

+	}

+	if (stack.length>1) {

+		throw(new Mexp.exception("Uncaught Syntax error"));

+	}

+	return stack[0].value>1000000000000000?"Infinity":parseFloat(stack[0].value.toFixed(15));

+};

+Mexp.eval=function(str,tokens,obj){

+	if (typeof tokens==="undefined") {

+		return this.lex(str).toPostfix().postfixEval();

+	}

+	else if (typeof obj==="undefined") {

+		if (typeof tokens.length!=="undefined") 

+			return this.lex(str,tokens).toPostfix().postfixEval();

+		else

+			return this.lex(str).toPostfix().postfixEval(tokens);

+	}

+	else

+		return this.lex(str,tokens).toPostfix().postfixEval(obj);

+};

+module.exports=Mexp;
+},{"./postfix.js":4}]},{},[1])(1)
+});
\ No newline at end of file