Xpounded Simple Math Library

Copy and Paste and Use this Simple Math Library
Includes methods for Factorials and Matrix Multiplication

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math={
	fact: function(n){return((n==1)?n:n*this.fact(n-1))},
	fib: function(n){return((n<2)?1:this.fib(n-1)+this.fib(n-2))},
	gcd: function(n,m){do{quot=Math.floor(n/m);rem=n-quot*m;n=m;m=rem}while(m!=0);return n},
	lcd: function(n,m){return m*n/this.gcd(n,m)},
	combo: function(n,m){return this.fact(n)/(this.fact(n - m) * this.fact(m))},
	permu: function(n,m){return this.fact(n)/this.fact(m)},
	isPrime: function(n){for(var i=2;i<n-1;i++){if(n%i==0)return false;}return true;},
	isEven: function(n){return(n%2 == 0)},
	validaddmat: function (a,b){var ret=false;if(a.length==b.length)if(a[0].length==b[0].length)ret=true;return ret},
	matrixAdd: function (a,b){var res=new Array();if(this.validaddmat(a,b)){for(var i=0;i<a.length;i++){res[i]=new Array();for(var j=0;j<a[0].length;j++)res[i][j]=a[i][j]+b[i][j]}}else res=null;return res}, 
	matrixBuild: function (row,col){var res=new Array();for(var i=0;i<row;i++){res[i]=new Array();for(var j=0;j<col;j++)res[i][j]=parseInt(Math.random(0)*10)}return res},
	validxmat: function (a,b){var ret=false;if(a[0].length==b.length)ret=true;return ret}, 
	matrixMult: function (a,b){var res=new Array();if(this.validxmat(a,b)){for(var i=0;i<a.length;i++){res[i]=new Array();for(k=0;k<b[0].length;k++){res[i][k]=0;for(j=0;j<a[0].length;j++)res[i][k]+=a[i][j]*b[j][k]}}}else res=null;return res},
	matrixTrans: function (a){var res=new Array();for(var i=0;i<a[0].length;i++){res[i]=new Array();for(var j=0;j<a.length;j++)res[i][j]=a[j][i]}return res},
	matrixCopy: function (a){var cpy=new Array();for(var i=0;i<a.length;i++){cpy[i]=new Array();for(var j=0;j<a[0].length;j++){cpy[i][j]=a[i][j]}}return cpy},
	prob: function (a){var coeff=1/Math.sqrt(2*Math.PI);var exp=-Math.exp(a,2)/2;return coeff*Math.exp(Math.E,exp)},
	clover: function (a,theta,leaves,rotate){if(leaves==null)leaves=3;if(leaves!=3)if(leaves!=4)leaves=3;if(rotate==null)rotate=0;if(rotate!=0)if(rotate!=1)rotate=0;var opp=leaves+rotate*2;var ret=false;switch(opp){case 3:ret=a*Math.sin(3*theta);break;case 4:ret=a*Math.sin(2*theta);break;case 5:ret=a*Math.cos(3*theta);break;case 6:ret=a*Math.sin(2*theta);break;}return ret},
	toRadians: function (a){return a*(Math.PI/180)},
	toDegrees: function (a){return a*(180/Math.PI)},
	toRadial: function (a,b){return Math.sqrt(Math.exp(a,2)+Math.exp(b,2))},
	radialToX: function (a,theta){return a*Math.cos(theta)},
	radialToY: function (a,theta){return a*Math.sin(theta)},
	listing: function(){var ret='';for(var i in this){ret+=i+"\n"}return "lib: math" + "\n" + ret},
	about:"matlib is a simple math libray made by R.Spoons rdspoons@poncacity.net http://www.xpounded.netfirms.com",
	help:"get a list of all matlib functions using listing()\nKeep it growing by addiing more resources."
}

(Save this as a file with a *.js extension, or include it directly in your script)

- Copyright 2003 Xpounded -
All JS code developed by Xpounded is developed in RHSCoder.
All VBS code developed by Xpounded is developed in VBS QuickDev IDE, or RHSCoder.
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