int __fastcall sub_2E72int a1 int a2 char v2; r6 char v4; r1 int i; r2 int j; r3 int v7; r4 int k; r2 char v10; r4 int v11; r1 int l; r3 char v1540; sp+8h bp-28h BYREF v2 = v15;

Based on the provided code, the function sub_2E72 takes two parameters a1 and a2 and returns an integer.

The function starts by declaring a character array v15 of size 40. It then initializes v2 and v4 to point to the start of v15.

Next, the function enters a nested loop to copy 16 bytes of data from the memory address a1 into v15, effectively copying a 4x4 matrix of bytes. This nested loop iterates over i and j and uses pointer arithmetic to copy the bytes.

After that, the function calls sub_2CB2 passing v15 and the memory address a2 + 160 as arguments.

Then, the function enters a loop that iterates 9 times. In each iteration, it calls sub_2DB4, sub_2D88, and sub_2CB2 with v15 and the memory address a2 + 16 * v7 as arguments. If v7 is not zero, it also calls sub_2DF0. After each iteration, it decrements v7 by 1.

Finally, the function enters another nested loop to copy the modified v15 back into the memory address a1. This nested loop iterates over k and l and uses pointer arithmetic to copy the bytes.

The function then returns a1