Function Sqrt

kite_test.go:511–519

(r *Request)

var ErrNegative = errors.New("negative argument")

func Sqrt(r *Request) (interface{}, error) {
	a := r.Args.One().MustFloat64()

	if a < 0 {
		return nil, ErrNegative
	}

	return math.Sqrt(a), nil
}

// Calls the callback with the result. For testing requests with Callback.
func SquareCB(r *Request) (interface{}, error) {