OSAL_BITS_PER_UL_MASK
addr[nr/OSAL_BITS_PER_UL] |= 1UL << (nr & OSAL_BITS_PER_UL_MASK);
addr[nr/OSAL_BITS_PER_UL] &= ~(1UL << (nr & OSAL_BITS_PER_UL_MASK));
return !!(addr[nr/OSAL_BITS_PER_UL] & (1UL << (nr & OSAL_BITS_PER_UL_MASK)));