Differences

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--- chess:programming:bit_operations [2021/11/05 09:51] – peter
+++ chess:programming:bit_operations [2021/11/05 09:55] (current) – peter
@@ Line 28: / Line 28: @@
 Apply an odd mask against it:
+<code>
 00101101011001010111000110001001   &    (n)
 01010101010101010101010101010101        (0x55555555)
 ————————————————————————————————
 00000000000101000100000101000100        (Contains all odd bits)
+</code>
 <WRAP info>
 **NOTE:**  Use Masks.
-  * 0xAAAAAAAA = 1010 1010 1010 1010 1010 1010 1010 1010
+  * Mask **0xAAAAAAAA** has all its even bits set.
-  * 0x55555555 = 0101 0101 0101 0101 0101 0101 0101 0101
+    * Its bitwise AND with a number will separate out the even bits.
+    * 1010 1010 1010 1010 1010 1010 1010 1010
+  * Mask **0x55555555** has all its odd bits set.
+    * Its bitwise AND with a number will separate out the odd bits.
+    * 1010 1010 1010 1010 1010 1010 1010 1010
 </WRAP>