To round a decimal
number, let use this function.
func round(a:Double)->Double{
let mu = pow(10.0,1.0)
let r=round(a*mu)/mu
return r
}
Now use it like this.
let number=3.34566
let number2=round(number)
la.text=String(number2)
If you change let mu = pow(10.0,1.0) to let mu = pow(10.0,3.0)
The result number will
has 3 characters after comma.
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