[ACPICA]

[reactos.git] / reactos / drivers / bus / acpi / acpica / include / acmacros.h

diff --git a/reactos/drivers/bus/acpi/acpica/include/acmacros.h b/reactos/drivers/bus/acpi/acpica/include/acmacros.h
index 1393412..ecb8050 100644 (file)
--- a/reactos/drivers/bus/acpi/acpica/include/acmacros.h
+++ b/reactos/drivers/bus/acpi/acpica/include/acmacros.h
@@ -264,6 +264,10 @@
 
 #define ACPI_IS_MISALIGNED(value)           (((ACPI_SIZE) value) & (sizeof(ACPI_SIZE)-1))
 
+/* Generic (power-of-two) rounding */
+
+#define ACPI_IS_POWER_OF_TWO(a)             (((a) & ((a) - 1)) == 0)
+
 /*
  * Bitmask creation
  * Bit positions start at zero.