package main import ( "fmt" ) // addCheckOverflow adds two int16 numbers and additionally // returns true if the result overflowed func addCheckOverflow(a, b uint16) (uint16, bool) { res := a + b overflowed := res < a || res < b return res, overflowed } func main() { res, overflowed := addCheckOverflow(1, 3) fmt.Printf("%5d + %5d = %5d, overflowed: %v\n\n", 1, 3, res, overflowed) res, overflowed = addCheckOverflow(65520, 10000) fmt.Printf("%5d + %5d = %5d, overflowed: %v\n", 65550, 10000, res, overflowed) }