Package Exports

num-ops
num-ops/index.js

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (num-ops) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

num-ops

Our library provides a comprehensive solution for performing precise mathematical operations in JavaScript. It ensures accuracy and reliability and offers the flexibility to convert results from a number to a string data type to avoid rounding errors.

Need

To avoid floating-point and rounding errors in JS

  5.33 + 5.2 === 10.530000000000001                              //should be 10.53
  0.396951913104453 + 0.29443589412502646 === 0.6913878072294795 //should be 0.69138780722947946
  8.13 - 5.75 === 2.380000000000001                              //should be 2.38
  8.38 * 0.3 === 2.5140000000000002                              //should be 2.514
  99.27 / 3 === 33.089999999999996                               //should be 33.09

Installation

Install num-ops with npm globally

  npm install -g num-ops

Install num-ops with npm as dev dependency

  npm install -D num-ops

Methods

  ops.add(num1, num2)       //perform accurate addition of two numbers
  ops.subtract(num1, num2)  //perform accurate subtraction of two numbers
  ops.multiply(num1, num2)  //perform accurate multiplication of two numbers
  ops.divide(num1, num2)    //perform accurate division of two numbers

Usage/Examples

import ops from 'num-ops'

ops.add(5.33, 5.2) // = 10.53, not 10.530000000000001
ops.subtract(8.13, 5.75) // = 2.38, not 2.380000000000001
ops.multiply(8.38, 0.3) // = 2.514, not 2.5140000000000002
ops.divide(99.27, 3) // = 33.09, not 33.089999999999996

To mitigate the effects of rounding errors, it is recommended to convert the numerical answer to a string format. This can be achieved by passing the value of 2 as a parameter when calling the relevant method. By doing so, the numerical value will be represented as a string, thereby avoiding any potential inaccuracies that may result from rounding.

ops.add(0.396951913104453, 0.29443589412502646) // = 0.6913878072294795, not 0.69138780722947946
ops.add(0.396951913104453, 0.29443589412502646, 2) // = '0.69138780722947946'

License

MIT