hi to all,
I'm looking for a fast and simple code to encode an integer number into a bit array (binary number).

The code I wrote and that I currently use is the following:


is there any a simpler and faster one?

hmmh: maybe this...:


any other proposals?

Ford,

I haven't had a chance to try this with the actual RobotC compiler, but this code should work for you. (It worked fine on the compiler I just tried it with.) Using it would cut out the comparison you are doing.

hi,
great, really great, it's working perfect!
I just changed the for-loop counter from decreasing to increasing

so now it's even working in the same "direction" as my own code.
And I think your's must be much faster .

Thx a lot!

PS:
what exactly does
i >>= 1;
do?
I know >> 1
and I know =1
but >>=1

Ford,

'>>=' is a operation to shift, then assign.

Just like '+=' will add, then assign the result to the variable, '>>=' will shift by the specified number of bits, then assign the result back to the variable on the left.

So, 'i >>= 1' tells the compiler to shift i's bits to the right by one, then store that result back in i.

In essence, what the code is doing is ripping a single bit at a time off the variable you pass in. Inside the loop, we set your array variable to the value of the lowest bit, then shift that bit away and repeat with the next bit, which is now in the least-significant bit spot.

aaaah...!
thx a lot!