C++ Function sub_2AA0: Matrix Transformation with XOR Operations

The given code appears to be a C++ function named 'sub_2AA0'. It takes two integer arguments, 'a1' and 'a2'.

The function begins by copying the contents of the global variable 'unk_65A5' into an array called 'dest' using the 'memcpy' function.

Next, it iterates through a 4x4 matrix, copying values from the source matrix at address 'a1' to the destination matrix at address 'a2'.

After that, the function enters a 'while' loop that executes 10 times. Within the loop, it performs XOR operations on the bytes of the destination matrix using values from the 'dest' array and a lookup table named 'byte_8004'.

Finally, the function returns the result.

Without further context or information about the variables and the lookup table's purpose, it's difficult to determine the function's exact purpose. It likely performs a cryptographic or data manipulation task.