assert.h(0P)              POSIX Programmer's Manual             assert.h(0P)

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       This manual page is part of the POSIX Programmer's Manual.  The Linux
       implementation of this interface may differ (consult the
       corresponding Linux manual page for details of Linux behavior), or
       the interface may not be implemented on Linux.

NAME         top

       assert.h — verify program assertion

SYNOPSIS         top

       #include <assert.h>

DESCRIPTION         top

       The functionality described on this reference page is aligned with
       the ISO C standard. Any conflict between the requirements described
       here and the ISO C standard is unintentional. This volume of
       POSIX.1‐2008 defers to the ISO C standard.

       The <assert.h> header shall define the assert() macro. It refers to
       the macro NDEBUG which is not defined in the header. If NDEBUG is
       defined as a macro name before the inclusion of this header, the
       assert() macro shall be defined simply as:

           #define assert(ignore)((void) 0)

       Otherwise, the macro behaves as described in assert().

       The assert() macro shall be redefined according to the current state
       of NDEBUG each time <assert.h> is included.

       The assert() macro shall be implemented as a macro, not as a
       function. If the macro definition is suppressed in order to access an
       actual function, the behavior is undefined.

       The following sections are informative.



RATIONALE         top




SEE ALSO         top

       The System Interfaces volume of POSIX.1‐2008, assert(3p)

COPYRIGHT         top

       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1, 2013 Edition, Standard for Information
       Technology -- Portable Operating System Interface (POSIX), The Open
       Group Base Specifications Issue 7, Copyright (C) 2013 by the
       Institute of Electrical and Electronics Engineers, Inc and The Open
       Group.  (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1
       applied.) In the event of any discrepancy between this version and
       the original IEEE and The Open Group Standard, the original IEEE and
       The Open Group Standard is the referee document. The original
       Standard can be obtained online at .

       Any typographical or formatting errors that appear in this page are
       most likely to have been introduced during the conversion of the
       source files to man page format. To report such errors, see .

IEEE/The Open Group                 2013                        assert.h(0P)

Pages that refer to this page: assert(3p)