javascript - long decimal float number accuracy

Question

I'm trying to do some floating number calculation with javascript that requires high accuracy

when I tried to initiate a variable like this:

const pi = 3.141592653589793238462643383280

System will truncate number to

>pi
>3.141592653589793

How can I do calculating with long decimal digits? thanks!

May be you should try this. https://github.com/dtrebbien/BigDecimal.js — Arsalan Akhtar, Feb 25 '18 at 07:12
@ElliottFrisch, sorry I mean to say calculating with long decimal digits, not just storing it, i've updated question — jerry, Feb 25 '18 at 07:17
@ArsalanAkhtar, thanks, BigDecimal.js seems complicated, I wonder would there be any performance penalty? — jerry, Feb 25 '18 at 07:19
@Frederik.L, I'm trying to do some statistic work, accuracy is important to me, is javascript not the right language for this sort of work? — jerry, Feb 25 '18 at 07:23
@jerry Not that I wouldn't be interested to see decent Javascript ways of managing high accuracy numbers, I feel like you will end up doing something near what the Python language does with "endless numbers". That is probably more efficient to use a native approach with Python instead of using a lib to recreate this in javascript. Just my two cents. — Frederik.L, Feb 25 '18 at 07:26

score 0 · Answer 1 · answered Feb 25 '18 at 07:33

0

You can use a library like say for example http://mikemcl.github.io/decimal.js/

answered Feb 25 '18 at 07:33

Jiby Jose

1 Answers1