/* Copyright (C) 1991-2019 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: 7.20 General utilities <stdlib.h> */#ifndef _STDLIB_H#define __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION#include<bits/libc-header-start.h>/* Get size_t, wchar_t and NULL from <stddef.h>. */#define __need_size_t#define __need_wchar_t#define __need_NULL#include<stddef.h>__BEGIN_DECLS#define _STDLIB_H 1#if (defined __USE_XOPEN || defined __USE_XOPEN2K8) && !defined _SYS_WAIT_H/* XPG requires a few symbols from <sys/wait.h> being defined. */#include<bits/waitflags.h>#include<bits/waitstatus.h>/* Define the macros <sys/wait.h> also would define this way. */# define WEXITSTATUS(status) __WEXITSTATUS (status)# define WTERMSIG(status) __WTERMSIG (status)# define WSTOPSIG(status) __WSTOPSIG (status)# define WIFEXITED(status) __WIFEXITED (status)# define WIFSIGNALE