Save some bytes in program memory

**Mike, K8LH** · - 8th February 2012, 03:39

I assume you mean 'words' instead of 'bytes'?

I tried a few variations using the free/lite version of BoostC, just for fun;

Code:

    if(index < 3)           // 7 words
      index++;              //
    else                    //
      index = 0;            //

Code:

    index = index++ & 3;    // 6 words

Code:

    index = ++index & 3;    // 5 words

Code:

    index = 3 & ++index;    // 4 words

Code:

    index++;                // 3 words
    index &= 3;             //

Code:

    index++;                // 2 words
    index.2 = 0;            //

Now I'm really curious about the assembly code that PBP generated...

Thread: Save some bytes in program memory