Method: Integer#lsb_bit_position

Defined in:
lib/setfu.rb

#lsb_bit_position ⇒ Object 



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# File 'lib/setfu.rb', line 1247

def lsb_bit_position
  return nil if zero?
  pos = 0
  n = self
  while (n & 0xffffffffffffffff) == 0
    n >>= 64
    pos += 64
  end
  while (n & 0xff) == 0
    n >>= 8
    pos += 8
  end
  mask = 1
  loop do
    break if mask == (n & mask)
    mask <<= 1
    pos += 1
  end
  return pos
end