Checking if a double value is an integer - Swift

Question

I need to check if a double-defined variable is convertible to Int without losing its value. This doesn\'t work because they are of different types:

if self.         


        

Answer 1

extension FloatingPoint {
    var isWholeNumber: Bool { isNormal ? self == rounded() : isZero }
}

let double = 3.0    
double.isWholeNumber        // true
print(3.15.isWholeNumber)   // false