How to perform some arithmetic operations on binary bit number?

Question

I have a number like 100100010000001010001 and when I store a number in some variable like:

let numb =  100100010000001010001

it gives me the error:

Integer literal '100100010000001010001' overflows when stored into 'Int'

I have also tried the other ways like:

var number:UInt64 =  100100010000001010001

I just want to add another number to this number. Can anyone tell me how I can do this? I also tried:

NSDecimalNumber(value: 100100010000001010001)

and it does not work either.

rmaddy · Accepted Answer · 2018-06-02 15:49:42Z

2

Swift allows you to write integer literals in different bases:

This is covered in the Numeric Literals section of the Swift book.

So your binary number would be written as:

let numb = 0b100100010000001010001

Or you can create the Int from a string using a radix:

let numb = Int("100100010000001010001", radix: 2)

answered Jun 2, 2018 at 15:43

rmaddy

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