epsicheck

Five simple utilities for comparing two floating point numbers, each with a short alias:

• equal or eq,
• lessThan or lt,
• lessThanOrEqual or lte,
• greaterThan or gt, and
• greaterThanOrEqual or gte.

The default epsilon is 1e-6 and can be customized using the third parameter.

Functions Overview

| a, b | eq(a, b) | lt(a, b) | lte(a, b) | gt(a, b) | gte(a, b) | |---------------|:------------------:|:------------------:|:------------------:|:------------------:|:------------------:| | 1, 2 | | :white_check_mark: | :white_check_mark: | | | | 1, 1 + 1e-5 | | :white_check_mark: | :white_check_mark: | | | | 1, 1 + 1e-7 | :white_check_mark: | | :white_check_mark: | | :white_check_mark: | | 1, 1 | :white_check_mark: | | :white_check_mark: | | :white_check_mark: | | 1 + 1e-7, 1 | :white_check_mark: | | :white_check_mark: | | :white_check_mark: | | 1 + 1e-5, 1 | | | | :white_check_mark: | :white_check_mark: | | 2, 1 | | | | :white_check_mark: | :white_check_mark: |

The above table is assuming the default epsilon of 1e-6.

Installation & Usage

$ npm i epsicheck

import { eq } from 'epsicheck'

console.assert(eq(0.1 + 0.2, 0.3))
console.assert(0.1 + 0.2 != 0.3)