text: /* Definitions of status bits for `wait' et al.
     Copyright (C) 1992-2020 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/>.  */
  
  #if !defined _SYS_WAIT_H && !defined _STDLIB_H
  # error "Never include <bits/waitstatus.h> directly; use <sys/wait.h> instead."
  #endif
  
  
  /* Everything extant so far uses these same bits.  */
  
  
  /* If WIFEXITED(STATUS), the low-order 8 bits of the status.  */
  #define	__WEXITSTATUS(status)	(((status) & 0xff00) >> 8)
  
  /* If WIFSIGNALED(STATUS), the terminating signal.  */
  #define	__WTERMSIG(status)	((status) & 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) & 0x7f) + 1) >> 1) > 0)
  
  /* Nonzero if STATUS indicates the child is stopped.  */
  #define	__WIFSTOPPED(status)	(((status) & 0xff) == 0x7f)
  
  /* Nonzero if STATUS indicates the child continued after a stop.  We only
     define this if <bits/waitflags.h> 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) & __WCOREFLAG)
  
  /* Macros for constructing status values.  */
  #define	__W_EXITCODE(ret, sig)	((ret) << 8 | (sig))
  #define	__W_STOPCODE(sig)	((sig) << 8 | 0x7f)
  #define __W_CONTINUED		0xffff
  #define	__WCOREFLAG		0x80
  