xor package:memory

Create a xor of bytes between a and b. the returns byte array is the size of the smallest input.
Create a xor of bytes between a and b. the returns byte array is the size of the smallest input.
xor bytes from source1 and source2 to destination d = s1 xor s2 s1, nor s2 are modified unless d point to s1 or s2
xor bytes from source with a specific value to destination d = replicate (sizeof s) v xor s