Nodejs Float Round roundTo(num, to)

Method Source Code

// Rounds to a given number
Math.roundTo = function roundTo (num, to) {

    if (num < to / 2) {
        return 0;
    }/*  w ww  .  ja v a 2  s  .c  o  m*/

    var amount = to * Math.round(num / to);

    if (amount === 0) {
        amount = to;
    }

    return amount;
};

Related

1. roundTo(num, dec)

   Math.roundTo = function (num, dec) {
     return Math.round(num * Math.pow(10, dec)) / Math.pow(10, dec);
   };
   

2. round(value)

   Util.round = function(value) {
     return new Number((new Number(value)).toFixed(2));
   };
   

3. roundTo (num, to)

   Math.ceilTo = function roundTo (num, to) {
       if (num < to) {
           return to;
       var amount = to * Math.ceil(num / to);
       if (amount === 0) {
           amount = to;
       return amount;
   ...
   

4. decRound(num, decimals)

   function MyMath () {}
   MyMath.decRound = function(num, decimals){
       return Math.round(num*Math.pow(10,decimals))/Math.pow(10,decimals);
   

5. $round(fractionalDigits)

   Number.prototype.$round = function(fractionalDigits) {
       return parseFloat(this.toFixed(fractionalDigits));
   };
   

6. ToRound(digits)

   Number.prototype.ToRound = function (digits) {
       if (digits < 0 || digits > 10)
           return this;
       var pow10 = Math.pow(10, digits);
       return Math.round(this * pow10) / pow10;
   };
   

7. round()

   Number.prototype.round = function() {
     return Math.round(this);
   };