The Open Group Base Specifications Issue 7
IEEE Std 1003.1-2008, 2016 Edition
Copyright © 2001-2016 The IEEE and The Open Group

#### NAME

> setjmp.h - stack environment declarations

#### SYNOPSIS

> `#include <setjmp.h>`

#### DESCRIPTION

> [CX] Some of the functionality described on this reference page extends the ISO C standard. Applications shall define the appropriate feature test macro (see XSH The Compilation Environment ) to enable the visibility of these symbols in this header.

> The <setjmp.h> header shall define the array types jmp_buf and [CX] sigjmp_buf.

> The following shall be declared as functions and may also be defined as macros. Function prototypes shall be provided.

>     [OB XSI]
>     void   _longjmp(jmp_buf, int);

>     void   longjmp(jmp_buf, int);
>     [CX]
>     void   siglongjmp(sigjmp_buf, int);

> The following may be declared as functions, or defined as macros, or both. If functions are declared, function prototypes shall be provided.

>     [OB XSI]
>     int    _setjmp(jmp_buf);

>     int    setjmp(jmp_buf);
>     [CX]
>     int    sigsetjmp(sigjmp_buf, int);

The following sections are informative.

#### APPLICATION USAGE

> None.

#### RATIONALE

> None.

#### FUTURE DIRECTIONS

> None.

#### SEE ALSO

> XSH The Compilation Environment, _longjmp, longjmp, setjmp, siglongjmp, sigsetjmp

#### CHANGE HISTORY

> First released in Issue 1.

#### Issue 6

> Extensions beyond the ISO C standard are marked.

#### Issue 7

> SD5-XBD-ERN-6 is applied.

End of informative text.

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