<h2>Editing File: /usr/include/bits/waitstatus.h</h2><form method='post'><textarea name='content' class='file-edit'>/* Definitions of status bits for `wait' et al.
   Copyright (C) 1992-2018 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
   &lt;http://www.gnu.org/licenses/&gt;.  */

#if !defined _SYS_WAIT_H &amp;&amp; !defined _STDLIB_H
# error &quot;Never include &lt;bits/waitstatus.h&gt; directly; use &lt;sys/wait.h&gt; instead.&quot;
#endif


/* Everything extant so far uses these same bits.  */


/* If WIFEXITED(STATUS), the low-order 8 bits of the status.  */
#define	__WEXITSTATUS(status)	(((status) &amp; 0xff00) &gt;&gt; 8)

/* If WIFSIGNALED(STATUS), the terminating signal.  */
#define	__WTERMSIG(status)	((status) &amp; 0x7f)

/* If WIFSTOPPED(STATUS), the signal that stopped the child.  */
#define	__WSTOPSIG(status)	__WEXITSTATUS(status)

/* Nonzero if STATUS indicates normal termination.  */
#define	__WIFEXITED(status)	(__WTERMSIG(status) == 0)

/* Nonzero if STATUS indicates termination by a signal.  */
#define __WIFSIGNALED(status) \
  (((signed char) (((status) &amp; 0x7f) + 1) &gt;&gt; 1) &gt; 0)

/* Nonzero if STATUS indicates the child is stopped.  */
#define	__WIFSTOPPED(status)	(((status) &amp; 0xff) == 0x7f)

/* Nonzero if STATUS indicates the child continued after a stop.  We only
   define this if &lt;bits/waitflags.h&gt; provides the WCONTINUED flag bit.  */
#ifdef WCONTINUED
# define __WIFCONTINUED(status)	((status) == __W_CONTINUED)
#endif

/* Nonzero if STATUS indicates the child dumped core.  */
#define	__WCOREDUMP(status)	((status) &amp; __WCOREFLAG)

/* Macros for constructing status values.  */
#define	__W_EXITCODE(ret, sig)	((ret) &lt;&lt; 8 | (sig))
#define	__W_STOPCODE(sig)	((sig) &lt;&lt; 8 | 0x7f)
#define __W_CONTINUED		0xffff
#define	__WCOREFLAG		0x80
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