Assert.h

/* Copyright (C) 1991,1992,1994-2001,2003,2004 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA   02111-1307 USA. */ /* *	ISO C99 Standard: 7.2 Diagnostics	  */ /* void assert (int expression); If NDEBUG is defined, do nothing. If not, and EXPRESSION is zero, print an error message and abort. */ /* void assert_perror (int errnum); If NDEBUG is defined, do nothing. If not, and ERRNUM is not zero, print an   error message with the error text for ERRNUM and abort. (This is a GNU extension.) */ __BEGIN_DECLS /* This prints an "Assertion failed" message and aborts. */ extern void __assert_fail (__const char *__assertion, __const char *__file, 			  unsigned int __line, __const char *__function) __THROW __attribute__ ((__noreturn__)); /* Likewise, but prints the error text for ERRNUM. */ extern void __assert_perror_fail (int __errnum, __const char *__file, 				 unsigned int __line, 				  __const char *__function) __THROW __attribute__ ((__noreturn__)); /* The following is not at all used here but needed for standard compliance. */ extern void __assert (const char *__assertion, const char *__file, int __line) __THROW __attribute__ ((__noreturn__)); __END_DECLS ((expr)								\   ? __ASSERT_VOID_CAST (0)						\    : (__assert_fail (__STRING(expr), __FILE__, __LINE__, __ASSERT_FUNCTION), \ __ASSERT_VOID_CAST (0))) (!(errnum)								\   ? __ASSERT_VOID_CAST (0)						\    : (__assert_perror_fail ((errnum), __FILE__, __LINE__, __ASSERT_FUNCTION), \ __ASSERT_VOID_CAST (0))) /* Version 2.4 and later of GCC define a magical variable `__PRETTY_FUNCTION__' which contains the name of the function currently being defined. This is broken in G++ before version 2.6. C9x has a similar variable called __func__, but prefer the GCC one since it demangles C++ function names. */
 * 1) ifdef	_ASSERT_H
 * 1) undef	_ASSERT_H
 * 2) undef	assert
 * 3) undef __ASSERT_VOID_CAST
 * 1) ifdef	__USE_GNU
 * 2)  undef assert_perror
 * 3) endif
 * 1) endif /* assert.h	*/
 * 1) define	_ASSERT_H	1
 * 2) include 
 * 1) if defined __cplusplus && __GNUC_PREREQ (2,95)
 * 2) define __ASSERT_VOID_CAST static_cast
 * 3) else
 * 4) define __ASSERT_VOID_CAST (void)
 * 5) endif
 * 1) ifdef	NDEBUG
 * 1) define assert(expr)		(__ASSERT_VOID_CAST (0))
 * 1) ifdef	__USE_GNU
 * 2)  define assert_perror(errnum)	(__ASSERT_VOID_CAST (0))
 * 3) endif
 * 1) else /* Not NDEBUG. */
 * 1) define assert(expr)							\
 * 1) ifdef	__USE_GNU
 * 2)  define assert_perror(errnum)						\
 * 1) endif
 * 1) if defined __cplusplus ? __GNUC_PREREQ (2, 6) : __GNUC_PREREQ (2, 4)
 * 2)   define __ASSERT_FUNCTION	__PRETTY_FUNCTION__
 * 3) else
 * 4)  if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
 * 5)   define __ASSERT_FUNCTION	__func__
 * 6)  else
 * 7)   define __ASSERT_FUNCTION	((__const char *) 0)
 * 8)  endif
 * 9) endif
 * 1) endif /* NDEBUG. */