| /* 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 |
| |
| #if defined __USE_GNU && defined __UCLIBC_HAS_PROGRAM_INVOCATION_NAME__ |
| |
| /* 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 const 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 |