For you lispers out there

When I'm programming in C, I do something like this:

int result;

result = operation(x,y,z);

if (result) return ERR_CODE;

When I look at lisp, there doesn't seem to be any error evaluation or SEH. How do you handle errors in lisp?

>>7
Show me a Lisp where IO actions are not allowed in STM transactions. Can't? Thought so. Lisp is a slow implementation of half of Haskell.