mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-09 04:11:27 +08:00
73 lines
2.3 KiB
C
73 lines
2.3 KiB
C
/* Copyright (C) 1991-2017 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]. */
|
|
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
|