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/* Copyright (C) 1991,1992,1994-2001,2003,2004,2007
   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
   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   <assert.h>

#ifdef      _ASSERT_H

# undef     _ASSERT_H
# undef     assert

# ifdef     __USE_GNU
#  undef assert_perror
# endif

#endif /* assert.h      */

#define     _ASSERT_H   1
#include <features.h>

#if defined __cplusplus && __GNUC_PREREQ (2,95)
# define __ASSERT_VOID_CAST static_cast<void>
# define __ASSERT_VOID_CAST (void)

/* void assert (int expression);

   If NDEBUG is defined, do nothing.
   If not, and EXPRESSION is zero, print an error message and abort.  */

#ifdef      NDEBUG

# define assert(expr)         (__ASSERT_VOID_CAST (0))

/* 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.) */

# ifdef     __USE_GNU
#  define assert_perror(errnum)     (__ASSERT_VOID_CAST (0))
# endif

#else /* Not NDEBUG.  */


/* 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__));


# define assert(expr)                                       \
  ((expr)                                             \
   ? __ASSERT_VOID_CAST (0)                                 \
   : __assert_fail (__STRING(expr), __FILE__, __LINE__, __ASSERT_FUNCTION))

# ifdef     __USE_GNU
#  define assert_perror(errnum)                                   \
  (!(errnum)                                                \
   ? __ASSERT_VOID_CAST (0)                                 \
   : __assert_perror_fail ((errnum), __FILE__, __LINE__, __ASSERT_FUNCTION))
# endif

/* 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.  */
# if defined __cplusplus ? __GNUC_PREREQ (2, 6) : __GNUC_PREREQ (2, 4)
# else
#  if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
#   define __ASSERT_FUNCTION  __func__
#  else
#   define __ASSERT_FUNCTION  ((__const char *) 0)
#  endif
# endif

#endif /* NDEBUG.  */

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