Edit File: errno.h
/* Copyright (C) 1991,92,93,94,95,96,97,2002 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: 7.5 Errors <errno.h> */ #ifndef _ERRNO_H /* The includer defined __need_Emath if he wants only the definitions of EDOM and ERANGE, and not everything else. */ #ifndef __need_Emath # define _ERRNO_H 1 # include <features.h> #endif __BEGIN_DECLS /* Get the error number constants from the system-specific file. This file will test __need_Emath and _ERRNO_H. */ #include <bits/errno.h> #undef __need_Emath #ifdef _ERRNO_H /* Declare the `errno' variable, unless it's defined as a macro by bits/errno.h. This is the case in GNU, where it is a per-thread variable. This redeclaration using the macro still works, but it will be a function declaration without a prototype and may trigger a -Wstrict-prototypes warning. */ #ifndef errno extern int errno; #endif #ifdef __USE_GNU /* The full and simple forms of the name with which the program was invoked. These variables are set up automatically at startup based on the value of ARGV[0] (this works only if you use GNU ld). */ extern char *program_invocation_name, *program_invocation_short_name; #endif /* __USE_GNU */ #endif /* _ERRNO_H */ __END_DECLS #endif /* _ERRNO_H */ /* The Hurd <bits/errno.h> defines `error_t' as an enumerated type so that printing `error_t' values in the debugger shows the names. We might need this definition sometimes even if this file was included before. */ #if defined __USE_GNU || defined __need_error_t # ifndef __error_t_defined typedef int error_t; # define __error_t_defined 1 # endif # undef __need_error_t #endif