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/* Copyright (C) 1991-2021 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 <https://www.gnu.org/licenses/>. */ /* * ISO C99 Standard: 7.5 Errors <errno.h> */ #ifndef _ERRNO_H #define _ERRNO_H 1 #include <features.h> /* The system-specific definitions of the E* constants, as macros. */ #include <bits/errno.h> /* When included from assembly language, this header only provides the E* constants. */ #ifndef __ASSEMBLER__ __BEGIN_DECLS /* The error code set by various library functions. */ extern int *__errno_location (void) __THROW __attribute_const__; # define errno (*__errno_location ()) # 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; extern char *program_invocation_short_name; #include <bits/types/error_t.h> # endif /* __USE_GNU */ __END_DECLS #endif /* !__ASSEMBLER__ */ #endif /* errno.h */
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