for each i

   1. Load h[i] from memory address &h+i, and place in register 1.
   2. Load x[i] from memory address &x+i, and place in register 2.
   3. Multiply contents of register 1 and register 2, placing result in register 3.
   4. Add contents of register 3 to running sum stored in register 4.

end 

Example 2: Loop that implements the vector dot product.