Get value after decimal point from double variable

Question

Is there a way to get the value after the decimal point out of a double variable?

doubleVar = 234.045

Can i get only the .045 out of the variable?

https://stackoverflow.com/a/55010456/2303865 – Leo Dabus Apr 01 '19 at 20:07 — Leo Dabus, Apr 01 '19 at 20:07
`let fraction = modf(doubleVar).1` – Leo Dabus Apr 01 '19 at 20:08 — Leo Dabus, Apr 01 '19 at 20:08

RajeshKumar R · Accepted Answer · 2019-04-02T05:28:11.193

1

Divide the double by 1 using truncatingRemainder(dividingBy:) and get the reminder.

var doubleVar = 234.045
var new = doubleVar.truncatingRemainder(dividingBy: 1.0)
let rounded = Double(round(1000*new)/1000)
print(rounded)

OR

Using C function modf

var doubleVar = 234.045
let splitPi = modf(doubleVar)
splitPi.0 // 324.0
splitPi.1 // 0.045

edited Apr 02 '19 at 05:28

answered Apr 01 '19 at 16:40

RajeshKumar R

This assumes the number of fractional digits will always have 3 digits – Leo Dabus Apr 01 '19 at 20:10

score 0 · Answer 2 · answered Apr 01 '19 at 16:38

0

I don't know swift but integer truncation should help. Something like

let doubleVar = 234.045

let result = doubleVar - Int(doubleVar)

answered Apr 01 '19 at 16:38

Gary Besta

2 Answers2