Math Exceptions

import Cocoa
enum MathError:ErrorType{
    case argEmpty
}
func divide(arg0:Double,arg1:Double) throws -> Double{
    if arg0 == 0.00{
        throw MathError.argEmpty
    }else if arg1 == 0{
        throw MathError.argEmpty
    }else{
        return arg0 / arg1
    }
}
do{
    try print(divide(0, arg1: 5))
}catch let exception{
    print("Caught exception: \(exception) (Argument cannot be 0)")
}