Function gcd

libraries/habitat-embed.js:667–680

(...numbers)

//======//
{
  const gcd = (...numbers) => {
    const [head, ...tail] = numbers;
    if (numbers.length === 1) return head;
    if (numbers.length > 2) return gcd(head, gcd(...tail));

    let [a, b] = [head, ...tail];

    while (true) {
      if (b === 0) return a;
      a = a % b;
      if (a === 0) return b;
      b = b % a;
    }
  };

  const reduce = (...numbers) => {
    const divisor = gcd(...numbers);