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//usr/include UP

/* Copyright (C) 1991-2018 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, see <http://www.gnu.org/licenses/>. */ /* * ISO C99 Standard: 7.2 Diagnostics <assert.h> */ #ifdef _ASSERT_H # undef _ASSERT_H # undef assert # undef __ASSERT_VOID_CAST # 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> #else # define __ASSERT_VOID_CAST (void) #endif /* 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. */ __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 /* When possible, define assert so that it does not add extra parentheses around EXPR. Otherwise, those added parentheses would suppress warnings we'd expect to be detected by gcc's -Wparentheses. */ # if defined __cplusplus # define assert(expr) \ (static_cast <bool> (expr) \ ? void (0) \ : __assert_fail (#expr, __FILE__, __LINE__, __ASSERT_FUNCTION)) # elif !defined __GNUC__ || defined __STRICT_ANSI__ # define assert(expr) \ ((expr) \ ? __ASSERT_VOID_CAST (0) \ : __assert_fail (#expr, __FILE__, __LINE__, __ASSERT_FUNCTION)) # else /* The first occurrence of EXPR is not evaluated due to the sizeof, but will trigger any pedantic warnings masked by the __extension__ for the second occurrence. The ternary operator is required to support function pointers and bit fields in this context, and to suppress the evaluation of variable length arrays. */ # define assert(expr) \ ((void) sizeof ((expr) ? 1 : 0), __extension__ ({ \ if (expr) \ ; /* empty */ \ else \ __assert_fail (#expr, __FILE__, __LINE__, __ASSERT_FUNCTION); \ })) # endif # 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) # define __ASSERT_FUNCTION __extension__ __PRETTY_FUNCTION__ # else # if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L # define __ASSERT_FUNCTION __func__ # else # define __ASSERT_FUNCTION ((const char *) 0) # endif # endif #endif /* NDEBUG. */ #if defined __USE_ISOC11 && !defined __cplusplus # undef static_assert # define static_assert _Static_assert #endif

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