Defines the macros traditionally defined in the Standard C library header <setjmp.h>.
#if <TRADITIONAL C HEADERS>
#include <setjmp.h>
namespace std {
using ::jmp_buf;
using ::longjmp;
using ::setjmp;
}
#endif
Remarks
Including this header also ensures that the names declared with external linkage in the Standard C library header are declared in the std namespace. In this implementation, the names may or may not also be declared in the global namespace, depending on the specific translation environment.