assert(3) [osx man page]

ASSERT(3)						   BSD Library Functions Manual 						 ASSERT(3)

NAME

     assert -- expression verification macro

SYNOPSIS

     #include <assert.h>

     assert(expression);

DESCRIPTION

     The assert() macro tests the given expression and if it is false, the calling process is terminated.  A diagnostic message is written to
     stderr and the abort(3) function is called, effectively terminating the program.

     If expression is true, the assert() macro does nothing.

     The assert() macro may be removed at compile time with the cc(1) option -DNDEBUG.

DIAGNOSTICS

     The following diagnostic message is written to stderr if expression is false:

	   "assertion "%s" failed: file "%s", line %d
", 
			       "expression", __FILE__, __LINE__);

SEE ALSO

     cc(1), abort(3)

STANDARDS

     The assert() macro conforms to ANSI X3.159-1989 (``ANSI C89'').

HISTORY

     A assert macro appeared in Version 6 AT&T UNIX.

BSD
								   June 9, 1993 							       BSD

ASSERT(3)						   BSD Library Functions Manual 						 ASSERT(3)

NAME

     assert -- expression verification macro

SYNOPSIS

     #include <assert.h>

     assert(expression);

DESCRIPTION

     The assert() macro tests the given expression and if it is false, the calling process is terminated.  A diagnostic message, consisting of the
     text of the expression, the name of the source file, the line number and the enclosing function, is written to stderr and the abort(3) func-
     tion is called, effectively terminating the program.

     If expression is true, the assert() macro does nothing.

     The assert() macro may be removed at compile time with the cc(1) option -DNDEBUG.

DIAGNOSTICS

     The following diagnostic message is written to stderr if expression is false:

	   "assertion "%s" failed: file "%s", line %d, function "%s"
", 
			       "expression", __FILE__, __LINE__, __func__);

SEE ALSO

     cc(1), _DIAGASSERT(3), abort(3)

STANDARDS

     The assert() macro conforms to ISO/IEC 9899:1999 (``ISO C99'').

HISTORY

     A assert macro appeared in Version 6 AT&T UNIX.

     Information on the name of the enclosing function appeared in ISO/IEC 9899:1999 (``ISO C99'').

BSD
								 January 22, 2007							       BSD