Nodejs Number Calculate getHashCode()

Method Source Code

Number.prototype.getHashCode = function () {
    var x = this;

    x = ((x >> 16) ^ x) * 0x45d9f3b;
    x = ((x >> 16) ^ x) * 0x45d9f3b;
    x = ((x >> 16) ^ x);//from   w  ww.  j  av  a2  s . c om

    return x;
};

Related

1. frac()

   Number.prototype.frac = function() {
     return this - Math.floor(this);
   };
   

2. fuzzyEqual(otherNumber)

   Number.prototype.fuzzyEqual = function(otherNumber)
       return Math.abs(this - otherNumber) <= 0.00001;
   

3. gcd(b)

   Number.prototype.gcd = function(b) {
     return (b == 0) ? this : this.gcd(this % b);
   

4. getDecimalgetDecimal()

   Number.prototype.getDecimal = function getDecimal() {
       return parseInt(this, 10);
   };
   

5. getDisplayText(number)

   Number.getDisplayText = function(number) {
       if (number < 1000) {
           return number;
       if (number < 1000000) {
           return (number / 1000).toFixed(1) * 1 + "k";
       return (number / 1000000).toFixed(1) * 1 + "m";
   };
   ...
   

6. getHisByMs()

   Number.prototype.getHisByMs=function(){
       var ms=this;
       var date=new Date(ms);
       var his=[];
       his.push(Number(date.getHours()).addZero());
       his.push(Number(date.getMinutes()).addZero());
       his.push(Number(date.getSeconds()).addZero());
       return his;
   

7. getPrecisiongetPrecision(length)

   Number.prototype.getPrecision = function getPrecision(length) {
       var value = parseFloat(this);
       if (Number.isFloat(value)) {
           return value.toString().split(".")[1].length;
       return 0;
   };
   

8. getValue(arguments)

   var BigNumber = function(n){
     this.value = n.toString();
     this.getValue = function(){
       return this.value;
     this.getRealValue = function(){
       return Number(this.value);
     this.add = function(bnum){
   ...
   

9. greaterThan(num)

   Number.prototype.greaterThan = function(num) {
       return this > num;