PIC Microcontroller Bit Math Methods

Copy aligned bits from one register to another
Copy unaligned bits from one register to another:
Transfer one bit from a file register to one pin of PORT w/o jitter
Converting a 3-bit number to a 8-bit mask
Parity
Reverse bit order in a byte
Setting bit number X
Which bit number was set?
Testing bits in W
Clear W, Set bits
Rotate without carry
Rotate the nibbles within a byte.
swap w and f without a temp register

#define BIT(addr,bit) bit
#define ADDR(addr,bit) addr
#define MASK(addr,bit) 1<<(bit)

Then:

#define myflag somereg,5

	movlw BIT(myflag)	
	movf ADDR(myflag),w	
	andlw MASK(myflag)	

	etc...