module Concurrent::AtomicNumericCompareAndSetWrapper

def compare_and_set(old_value, new_value)
  if old_value.kind_of? Numeric
    while true
      old = get
      return false unless old.kind_of? Numeric
      return false unless old == old_value
      result = _compare_and_set(old, new_value)
      return result if result
    end
  else
    _compare_and_set(old_value, new_value)
  end
end