Where Online Learning is simpler!

The C and C++ Include Header Files

/usr/include/x86_64-linux-gnu/bits/error-ldbl.h


$ cat -n /usr/include/x86_64-linux-gnu/bits/error-ldbl.h

     1	/* Redirections for error.h functions for -mlong-double-64.
     2	   Copyright (C) 2019-2024 Free Software Foundation, Inc.
     3	   This file is part of the GNU C Library.
     4	
     5	   The GNU C Library is free software; you can redistribute it and/or
     6	   modify it under the terms of the GNU Lesser General Public
     7	   License as published by the Free Software Foundation; either
     8	   version 2.1 of the License, or (at your option) any later version.
     9	
    10	   The GNU C Library is distributed in the hope that it will be useful,
    11	   but WITHOUT ANY WARRANTY; without even the implied warranty of
    12	   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    13	   Lesser General Public License for more details.
    14	
    15	   You should have received a copy of the GNU Lesser General Public
    16	   License along with the GNU C Library; if not, see
    17	   <https://www.gnu.org/licenses/>.  */
    18	
    19	#ifndef _ERROR_H
    20	# error "Never include <bits/error-ldbl.h> directly; use <error.h> instead."
    21	#endif
    22	
    23	#if defined __extern_always_inline && defined __va_arg_pack
    24	extern void __REDIRECT_LDBL (__error_alias, (int __status, int __errnum,
    25				     const char *__format, ...), error)
    26	  __attribute__ ((__format__ (__printf__, 3, 4)));
    27	extern void __REDIRECT_LDBL (__error_noreturn, (int __status, int __errnum,
    28				     const char *__format, ...), error)
    29	  __attribute__ ((__noreturn__, __format__ (__printf__, 3, 4)));
    30	
    31	
    32	/* If we know the function will never return make sure the compiler
    33	   realizes that, too.  */
    34	__extern_always_inline void
    35	error (int __status, int __errnum, const char *__format, ...)
    36	{
    37	  if (__builtin_constant_p (__status) && __status != 0)
    38	    __error_noreturn (__status, __errnum, __format, __va_arg_pack ());
    39	  else
    40	    __error_alias (__status, __errnum, __format, __va_arg_pack ());
    41	}
    42	
    43	
    44	extern void __REDIRECT_LDBL (__error_at_line_alias, (int __status, int __errnum,
    45				     const char *__fname, unsigned int __line,
    46				     const char *__format, ...), error_at_line)
    47	  __attribute__ ((__format__ (__printf__, 5, 6)));
    48	extern void __REDIRECT_LDBL (__error_at_line_noreturn, (int __status, int __errnum,
    49				     const char *__fname, unsigned int __line,
    50				     const char *__format, ...), error_at_line)
    51	  __attribute__ ((__noreturn__, __format__ (__printf__, 5, 6)));
    52	
    53	
    54	/* If we know the function will never return make sure the compiler
    55	   realizes that, too.  */
    56	__extern_always_inline void
    57	error_at_line (int __status, int __errnum, const char *__fname,
    58		       unsigned int __line, const char *__format, ...)
    59	{
    60	  if (__builtin_constant_p (__status) && __status != 0)
    61	    __error_at_line_noreturn (__status, __errnum, __fname, __line, __format,
    62				      __va_arg_pack ());
    63	  else
    64	    __error_at_line_alias (__status, __errnum, __fname, __line,
    65				   __format, __va_arg_pack ());
    66	}
    67	#endif
    68	__LDBL_REDIR_DECL (error)
    69	__LDBL_REDIR_DECL (error_at_line)