__ACPI_FIND_LAST_BIT_16
__ACPI_FIND_LAST_BIT_16 ((a)>>16, (r)+16) : \
__ACPI_FIND_LAST_BIT_16 ((a), (r)))
#define ACPI_FIND_LAST_BIT_16(a) ((a) ? __ACPI_FIND_LAST_BIT_16 (a, 1) : 0)