gcd
&rest integers ⇒ greatest-common-denominator
integer—an integer.
greatest-common-denominator—a non-negative integer.
Returns the greatest common divisor of integers.
If only one integer is supplied, its absolute value is returned.
If no integers are given, gcd returns 0
,
which is an identity for this operation.
(gcd) ⇒ 0 (gcd 60 42) ⇒ 6 (gcd 3333 -33 101) ⇒ 1 (gcd 3333 -33 1002001) ⇒ 11 (gcd 91 -49) ⇒ 7 (gcd 63 -42 35) ⇒ 7 (gcd 5) ⇒ 5 (gcd -4) ⇒ 4
Should signal an error of type type-error if any integer is not an integer.
For three or more arguments,
(gcd b c ... z) ≡ (gcd (gcd a b) c ... z)