mirror of https://github.com/boa-dev/boa.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
28 lines
674 B
28 lines
674 B
/** |
|
* Calculate the greatest common divisor of two numbers. |
|
* @param {number} a |
|
* @param {number} b |
|
* @param {function} callback A callback method to call with the result. |
|
* @returns {number|*} The greatest common divisor of {a} and {b}. |
|
* @throws {TypeError} If either {a} or {b} is not finite. |
|
*/ |
|
export function gcd_callback(a, b, callback) { |
|
a = +a; |
|
b = +b; |
|
if (!Number.isFinite(a) || !Number.isFinite(b)) { |
|
throw new TypeError("Invalid input"); |
|
} |
|
|
|
// Euclidean algorithm |
|
function inner_gcd(a, b) { |
|
while (b !== 0) { |
|
let t = b; |
|
b = a % b; |
|
a = t; |
|
} |
|
return a; |
|
} |
|
|
|
let result = inner_gcd(a, b); |
|
callback(result); |
|
}
|
|
|