libavutil/avassert.h
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 /*
  * copyright (c) 2010 Michael Niedermayer <michaelni@gmx.at>
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg 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.
  *
  * FFmpeg 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 FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 /**
  * @file
  * simple assert() macros that are a bit more flexible than ISO C assert().
  * @author Michael Niedermayer <michaelni@gmx.at>
  */
 
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 #ifndef AVUTIL_AVASSERT_H
 #define AVUTIL_AVASSERT_H
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 #include <stdlib.h>
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 #include "avutil.h"
 #include "log.h"
 
 /**
  * assert() equivalent, that is always enabled.
  */
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 #define av_assert0(cond) do {                                           \
     if (!(cond)) {                                                      \
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         av_log(NULL, AV_LOG_PANIC, "Assertion %s failed at %s:%d\n",    \
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                AV_STRINGIFY(cond), __FILE__, __LINE__);                 \
         abort();                                                        \
     }                                                                   \
 } while (0)
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 /**
  * assert() equivalent, that does not lie in speed critical code.
  * These asserts() thus can be enabled without fearing speedloss.
  */
 #if defined(ASSERT_LEVEL) && ASSERT_LEVEL > 0
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 #define av_assert1(cond) av_assert0(cond)
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 #else
 #define av_assert1(cond) ((void)0)
 #endif
 
 
 /**
  * assert() equivalent, that does lie in speed critical code.
  */
 #if defined(ASSERT_LEVEL) && ASSERT_LEVEL > 1
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 #define av_assert2(cond) av_assert0(cond)
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 #else
 #define av_assert2(cond) ((void)0)
 #endif
 
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 #endif /* AVUTIL_AVASSERT_H */