Linux 2.6 - man page for assert.h (linux section 7posix)
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<assert.h>(P) POSIX Programmer's Manual <assert.h>(P)
assert.h - verify program assertion
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 inclu-
sion 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 defi-
nition is suppressed in order to access an actual function, the behavior is undefined.
The following sections are informative.
The System Interfaces volume of IEEE Std 1003.1-2001, assert()
Portions of this text are reprinted and reproduced in electronic form from IEEE Std
1003.1, 2003 Edition, Standard for Information Technology -- Portable Operating System
Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by
the Institute of Electrical and Electronics Engineers, Inc and The Open Group. 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 orig-
inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .
IEEE/The Open Group 2003 <assert.h>(P)
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