;; rem and mod are commonly used to get the remainder.
;; but when dealing with negative num(ber), the difference 
;; between rem and mod becomes obvious

;; mod means Gaussian's mod. So remainder always
;; should be positive value.
;; Remainder is same with % operator in ANSI C

user=> (mod -10 3)
2

user=> (rem -10 3)
-1

;; rem and mod are commonly used to get the remainder.
;; but when dealing with negative num(ber), the difference 
;; between rem and mod becomes obvious

;; mod means Gaussian's one
;; remainder is same with % operator in ANSI C

user=> (mod -10 3)
2

user=> (rem -10 3)
-1

;; rem and mod are commonly used to get the remainder.
;; but when dealing with negative num(ber), the difference 
;; between rem and mod becomes obvious

user=> (mod -10 3)
2

user=> (rem -10 3)
-1