bigInt to base2

Asked May 07 '18 at 18:57

Active May 07 '18 at 19:27

Viewed 199 times

I'd like to get for really big decimal values like e.g. 4.951760157141521e+27 to the matching binaryString using pure javaScript.

I'm aware that 4.951760157141521e+27 not really is a normal integer anymore what also leads to the problem that just using toString(2) does not work anymore.

print = function(i) { console.log(i) }


let myDecimalNumber = 42;   
print(+myDecimalNumber.toString(2));

let myDecimalNumberBIG = 4.951760157141521e+27;   
print(+myDecimalNumberBIG.toString(2));

How can I fix this? My idea was to use something like a bigInt library but it seems like currently I could not find any working solution so I would really appreciate a working example :)

edited May 07 '18 at 19:27

asked May 07 '18 at 18:57

Can you provide an example of the output you're looking for? – WillardSolutions May 07 '18 at 19:02
4.951760157141521e+27 as binary String like "10001010100101...." @WillardSolutions – May 07 '18 at 19:07
Since a few days, chrome supports BigInts (`4n ** 27n`) – Jonas Wilms May 07 '18 at 19:09
Sound good but is not really helpful in my case :) @JonasW. – May 07 '18 at 19:14
So you want to convert 4.951760157141521e+27 to a base 2 number, correct? – WillardSolutions May 07 '18 at 19:21
Absolutely right. You got it @WillardSolutions – May 07 '18 at 19:27
Check the discussion here; it may be helpful: https://stackoverflow.com/questions/39334494/converting-large-numbers-from-binary-to-decimal-and-back-in-javascript – WillardSolutions May 07 '18 at 19:28

bigInt to base2

0 Answers0