A function with prototype

int decode2(int x, int y, int z);

is compiled into IA32 assembly code. The body of the code is as follows:

x at %ebp+8, y at %ebp+12, z at %ebp+16

1 movl 12(%ebp), %edx

2 subl 16(%ebp), %edx

3 movl %edx, %eax

4 sall $31, %eax

5 sarl $31, %eax

6 imull 8(%ebp), %edx

7 xorl %edx, %eax

Parameters x, y, and z are stored at memory locations with offsets 8, 12, and 16 relative to the address in register %ebp. The code stores the return value in register %eax. Write C code for decode2 that will have an effect equivalent to our assembly code.