(defpackage sneps-calculator
  (:shadow plus-button minus-button times-button divide-button mod-button)
  (:use common-lisp)
  (:export plus-button minus-button times-button divide-button mod-button) 
)  
(in-package sneps-calculator)

(defun plus-button (x y)
  (+ x y)
)

(defun minus-button (x y)
  (- x y)
)

(defun times-button (x y)
  (* x y)
)

(defun divide-button (x y)
  (/ x y)
)

(defun mod-button (x y)
  (mod x y)
)