gamp

Provide a four operations calculator API with workaround for the common floating-point issue


Keywords
floating-point, calculator, calc, four operations, arithmetic
License
MIT
Install
npm install gamp@0.2.1

Documentation

gamp

This small lib provides a four operations calculator API with workaround for the common floating-point issue.

How to use

You can either require it using requireJS, import it inside your Node.js project, or just load it using regular script tag.

The API is pretty simple:

  • gamp.add(left, right): returns the result of the addition of the right operand to the left operand
  • gamp.sub(left, right): returns the result of the subtraction of the right operand from the left operand
  • gamp.mul(left, right): returns the results of the multiplication of the left operand by the right operand
  • gamp.div(left, right): returns the results of the division of the left operand by the right operand
  • gamp.pow(left, right): returns the results of the power of the left operand by the right operand
  • gamp.normalize(value, factor): normalizes the value by a factor and rounds it
  • gamp.round(value, [digits=16]): rounds a value to a particular number of digits (default 16)
  • gamp(value1, value2, ..., valueN): computes the shared precision of the provided decimal numbers. This precision is the decimal factor needed to normalize the values in order to prevent the floating-point round-off error.