#### History of Idiom 74 > diff from v26 to v27

Edit summary for version 27 :

[Clojure] Fixed a type where b was returned instead of a.

[Clojure] Fixed a type where b was returned instead of a.

↷

#### Version 26

2019-09-26, 16:38:11

#### Version 27

2019-09-26, 16:39:11

# Idiom #74 Compute GCD

Compute the greatest common divisor x of big integers a and b. Use an integer type able to handle huge numbers.

# Idiom #74 Compute GCD

Compute the greatest common divisor x of big integers a and b. Use an integer type able to handle huge numbers.

##### Code

(defn gcd [a b] (if (zero? b) b (recur b (mod a b))))

##### Code

(defn gcd [a b] (if (zero? b) a (recur b (mod a b))))