true-math
True Math - math library for numbers of arbitrary length
Install
npm install true-math --save
Usage
Just import need functions from true-math library and use them
Available functions:
Example
Import {needFuntions} from true-math in the file test.js
import {sum, subtract, ...} from 'true-math';
then call them like shown below:
const testData = ['0.1001', '0.0002'];
console.log('\nTest for:', testData);
console.log('Sum is : ', sum(testData));
console.log('Difference is : ', subtract(testData));
Documentation
Notations
NaN - Not a Number
Inf or +Inf - Infinity
-Inf - -Infinity
Any - Number or NaN or Inf or -Inf
-Number - Number < 0
+Number - Number > 0
Number - -Number or +Number or 0
Functions
abs(num: string): string
Returns absolute value of number
Table of specific values:
| Num | Return |
|---|---|
| NaN | NaN |
| ±Inf | Inf |
ceil(num: string): string
If number has decimal part then returns the closest next integer
Table of specific values:
| Num | Return |
|---|---|
| NaN | NaN |
| ±Inf | ±Inf |
compare(num1: string, num2: string): string
Returns -1 if num1 < num2
Returns 0 if num1 = num2
Returns 1 if num1 > num2
Table of specific values (permutation does not change the result):
| Num1 | Num2 | Return |
|---|---|---|
| NaN | Any | NaN |
| Inf | ±Inf | Inf |
| Inf | Number | Inf |
| -Inf | -Inf | -Inf |
| -Inf | Number | Number |
difference(nums: [string]): string
Returns difference of first number and others
Table of specific values:
| Num1 | Num2 | Return |
|---|---|---|
| NaN | Any | NaN |
| Any | NaN | NaN |
| Inf | Inf | NaN |
| Inf | -Inf | Inf |
| -Inf | Inf | -Inf |
| -Inf | -Inf | NaN |
| ±Inf | Number | ±Inf |
| Number | ±Inf | ∓Inf |
floor(num: string): string
If number has decimal part then returns the closest previous integer
Table of specific values:
| Num | Return |
|---|---|
| NaN | NaN |
| ±Inf | ±Inf |
product(nums: [string]): string
Returns product of first number and others
Table of specific values (permutation does not change the result):
| Num1 | Num2 | Return |
|---|---|---|
| NaN | Any | NaN |
| Inf | ±Inf | ±Inf |
| Inf | ±Number | ±Inf |
| -Inf | ±Inf | ∓Inf |
| -Inf | ±Number | ∓Inf |
| ±Inf | 0 | NaN |
sum(nums: [string]): string
Returns sum of first number and others
Table of specific values (permutation does not change the result):
| Num1 | Num2 | Return |
|---|---|---|
| NaN | Any | NaN |
| Inf | Inf | Inf |
| Inf | -Inf | NaN |
| -Inf | -Inf | -Inf |
| Number | ±Inf | ±Inf |
quotient(nums: [string], accuracy: string): string
Returns quotient of first number and others
accuracy must be a non-negative integer number and equal '8' if not defined
Table of specific values:
| Num1 | Num2 | Return |
|---|---|---|
| NaN | Any | NaN |
| Any | NaN | NaN |
| Inf | ±Number | ±Inf |
| -Inf | ±Number | ∓Inf |
| ±Inf | ±Inf | NaN |
| ±Inf | 0 | ±Inf |
| 0 | ±Inf | 0 |
| ±Number | 0 | ±Inf |
| 0 | 0 | NaN |
License
GPL-3.0-only