PIC Microcontroller Bit Math Method

Parity

From: John Payson

 ;This routine will leave the parity of X in X.0 
;while blenderizing most of the rest of X 
        swapf   X, W 
        xorwf   X, F 
        rrf     X, W 
        xorwf   X, F 
        btfsc   X, 2 
        incf    X, F 
 

See also:

• https://graphics.stanford.edu/~seander/bithacks.html