mirror of https://github.com/mkerrisk/man-pages
59 lines
1.8 KiB
Plaintext
59 lines
1.8 KiB
Plaintext
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.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved
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.TH "<assert.h>" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
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.\" <assert.h>
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.SH NAME
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assert.h \- verify program assertion
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.SH SYNOPSIS
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.LP
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\fB#include <assert.h>\fP
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.SH DESCRIPTION
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.LP
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The \fI<assert.h>\fP header shall define the \fIassert\fP() macro.
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It refers to
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the macro NDEBUG which is not defined in the header. If NDEBUG is
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defined as a macro name before the inclusion of this header, the
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\fIassert\fP() macro shall be defined simply as:
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.sp
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.RS
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.nf
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\fB#define assert(ignore)((void) 0)
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\fP
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.fi
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.RE
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.LP
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Otherwise, the macro behaves as described in \fIassert\fP().
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.LP
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The \fIassert\fP() macro shall be redefined according to the current
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state of NDEBUG
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each time \fI<assert.h>\fP is included.
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.LP
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The \fIassert\fP() macro shall be implemented as a macro, not as a
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function. If the
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macro definition is suppressed in order to access an actual function,
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the behavior is undefined.
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.LP
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\fIThe following sections are informative.\fP
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.SH APPLICATION USAGE
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.LP
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None.
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.SH RATIONALE
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.LP
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None.
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.SH FUTURE DIRECTIONS
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.LP
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None.
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.SH SEE ALSO
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.LP
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The System Interfaces volume of IEEE\ Std\ 1003.1-2001, \fIassert\fP()
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.SH COPYRIGHT
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Portions of this text are reprinted and reproduced in electronic form
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from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
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-- Portable Operating System Interface (POSIX), The Open Group Base
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Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
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Electrical and Electronics Engineers, Inc and The Open Group. In the
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event of any discrepancy between this version and the original IEEE and
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The Open Group Standard, the original IEEE and The Open Group Standard
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is the referee document. The original Standard can be obtained online at
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http://www.opengroup.org/unix/online.html .
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