Function countBinaryOnes

lib/internal/util.js:807–812

(n)

// Returns the number of ones in the binary representation of the decimal
// number.
function countBinaryOnes(n) {
  // Count the number of bits set in parallel, which is faster than looping
  n = n - ((n >>> 1) & 0x55555555);
  n = (n & 0x33333333) + ((n >>> 2) & 0x33333333);
  return ((n + (n >>> 4) & 0xF0F0F0F) * 0x1010101) >>> 24;
}

function getCIDR(address, netmask, family) {
  let ones = 0;