/* Copyright (C) 1991, 92, 93, 94, 95, 96 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 Library General Public License as published by the Free Software Foundation; either version 2 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* * ANSI Standard: 4.1.3 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 <errnos.h> #undef __need_Emath #ifdef _ERRNO_H /* Declare the `errno' variable, unless it's defined as a macro by errnos.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 Hurd <errnos.h> defines `error_t' as an enumerated type so that printing `error_t' values in the debugger shows the names. */ #ifndef __error_t_defined typedef int error_t; #define __error_t_defined 1 #endif /* 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 __END_DECLS #endif #endif /* errno.h */