Help with writing a function to reverse the bits in a byte

Question

/// Reverses the bits in a byte
/// @param x - the input byte
/// @return - the same byte with the bits reversed uint8_t reverse_bits(uint8_t x)

Answer 1

Martin Taylor , oh right I was just taking 1 as 0b1 rather than 0b00000001

To reverse exactly byte I would only need to add a single counter, something similar to:

int k=0;

for(;n;n>>=1){
reversed <<= 1;
reversed += (n&1);
k++;
}
if(k < 8)
reversed <<= 8-k;

to add required zeros at the end...

Answer 2

Here is a simple way to reverse bits in a number:

unsigned int reverse_bits(unsigned int num){
unsigned int reversed = 0;
unsigned int n= num;
for(;n;n>>=1){
reversed <<= 1;
reversed += (n&1);
}
return reversed;
}

Answer 3

Thank you for the example! Exatcly what i was looking for.

Answer 4

I understand the reverse of binary code I was trying to write out a code that would reverse the binary code.

Answer 5

I apologize Martin Taylor i am new to this. I am more used to reading rather than writing code. I only have experience with C++ robotic coding.