c – How do I XOR in a specific spot in my integer?
Could anybody please help me with this? With C I am trying to XOR(^) an int in a specific spot.
These are the steps:
Step 1: Grab and save the leftmost 4 bits before shifting
Step 2: Then I shift left by doing this on my code
num << 4
Step 3: Then XOR in num from
17-20 with the leftmost 4 bits that were stored in step 1.
Say I have an
unsigned int num = 7
this in binary would be
0000 0000 0000 0000 0000 0000 0000 0111
Before shifting to the left by 4, I want to grab and save the leftmost 4 bits
0000. Then I want to XOR from
17-20 of my num with the leftmost 4 bits that I saved.
This is for a hashing code I am creating. There is more to my code, but I am only sharing the part I am stuck and confused.
I have tried looking for other similar questions, but I don’t understand what they are doing. If I could get an explanation that would be great.
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