Machine Organization class question

I would like you to add some explanations for each step, thank you!!

5. Suppose we wish to write an aarch64 assembly program that implements the following C routine. A sample assembly program is given below, but it has errors. int myfunc(int a, int b){ int sum=a+b; int dif =ab; int sumdif = sum*dif; return sumdif; \} global myfunc myfunc: add w2,w0,w1 sub w3,w1,w0 mul w3,w2,w3 mov w0,w4 ret (a) Identify and correct any errors in the program. (b) What would need to be changed if instead of data type int we wanted long long int? What about type double