Deci-mal

Decimal type for JavaScript

Decimal

Simple Decimal type for Javascript.

Simple Decimal type which allows for:

  • conversion from numbers;
  • conversion from strings;
  • specification of precision;
  • changing of precision;
  • addition of Decimals;
  • subtraction of Decimals;
  • multiplication of Decimals;
  • division of Decimals.

When doing add, sub, mult, div-operators with two Decimals, the result will have the precision of the source Decimal with the highest precision.

JsDecimal uses an integer for internal storage.

JsDecimal is released under the Simplified BSD License.

Example usage

var decimal = require('decimal');
 
// conversion from numbers 
var a = decimal.fromNumber(2, 20); // 20.00 
var b = decimal.fromNumber(4, 40.1); // 40.1000 
 
// conversion from strings 
var c = Decimal.fromString(2, '60.60001'); // 60.00 
 
// specification of precision 
var d = new Decimal(1); // 0.0 
 
// changing of precision 
b.newPrecision(2).toString(); // 40.10 
 
// addition 
a.add(b).toString(); // 60.1000 
 
// subtraction 
a.sub(b).toString(); // -20.1000 
 
// multiplication 
a.mul(b).toString(); // 802.0000 
 
// division 
a.div(b).toString(); // 0.4988 

Unit testing

Unit tests are built using Expresso.