May 11, 2021 C
The setjmp.h header file defines the macro setjmp(), function longjmp() and variable type jmp_buf, which bypasses normal function calls and return rules.
The variables defined in the header file setjmp.h are listed below:
| Serial number | Variable & description |
|---|---|
| 1 |
jmp_buf
This is a storage macro setjmp() And functions longjmp() Array type of related information. |
Here is the only macro defined in this library:
| Serial number | Macro & Description |
|---|---|
| 1 |
int setjmp(jmp_buf environment)
This macro saves the current environment in variables environment Middle, so that functions longjmp() Subsequent use.If this macro returns directly from the macro, it will return zero, but if it from longjmp() The function call is returned, then it returns a non-zero value. |
Here is the only function defined in the header file setjmp.h:
| Serial number | Function & Description |
|---|---|
| 1 |
void longjmp(jmp_buf environment, int value)
This function recovers the last call setjmp() Macro-saving environment, jmp_buf The setting of the parameter is generated by previous call setjmp (). |