How to store 32 bit integer variable in pure C on 8051 uC

Question

I am trying to write some soft on 8051 uC in C. Problem is that the longest integer is equal 16 bits. Is it possible to create my own 32 bit unsigned integer variable? Of course it should support all operations like +, -, << etc.

If it is not possible what is alternative? For me the only way which comes to my mind is to have two 16 bit integers. But in that solution I think I can't use standard operators. During all operations I would have to remember modifing two integers.

Is there any better way?

Thanks in advance.

Answer 1

If your compiler/libc implementation conforms to C99, you can use the

uint32_t

type to represent 32-bit unsigned integers. If it doesn't, you can still give

unsigned long

a try (print its sizeof to see how big it is).