Round currency closest to five

Question

I\'d like to round my values to the closest of 5 cent for example:

5.31 -> 5.30
5.35 -> 5.35
5.33 -> 5.35
5.38 -> 5.40

Currentl

Answer 1

I will use round function and NSNumberFormatter also but slightly different algorithm

I was thinking about using % but I changed it to /

let formatter = NSNumberFormatter()
formatter.minimumFractionDigits = 2
formatter.maximumFractionDigits = 2

//5.30
formatter.stringFromNumber(round(5.31/0.05)*0.05)
//5.35
formatter.stringFromNumber(round(5.35/0.05)*0.05)
//5.35
formatter.stringFromNumber(round(5.33/0.05)*0.05)
//5.40
formatter.stringFromNumber(round(5.38/0.05)*0.05)
//12.15
formatter.stringFromNumber(round(12.13/0.05)*0.05)