What is <setjmp.h>?

[Null]

What is setjmp.h? Where to use it? How to use setjmp.h functions?
As far as i understood, it's some kind of goto but nothing more. So i hope someone will explain something about this.
Thanks!

[Bazzy]

http://www.cplusplus.com/reference/clibrary/csetjmp/

[jsmith]

It's simple.

setjmp.h is a header file containing functions that you should never use in a C++ program.

[Null]

Why?

[kbw]

Nor should you use it in C. setjump/longjump implement non-local gotos.