Add restrict keyword to pointers (not sharing the same memory for multiple fields)

opencl_fdtd/simulation.py

@@ -166,7 +166,7 @@ class Simulation(object):
         ctype = type_to_C(self.arg_type)
 
         def ptr(arg: str) -> str:
-            return ctype + ' *' + arg
+            return ctype + ' * restrict ' + arg
 
         base_fields = OrderedDict()
         base_fields[ptr('E')] = self.E