func (s *bitMask) IsSet(bit int) bool {
	if bit < 0 || bit >= 64 {
		return false
	}
	return (*s & (1 << uint64(bit))) > 0
}

// AnySet checks bit in mask to see if any provided bit is set to one
func (s *bitMask) AnySet(bits []int) bool {
	for _, b := range bits {
		if s.IsSet(b) {
			return true
		}
	}
	return false
}

// IsEqual checks if masks are equal