NAME
	  siglongjmp - Nonlocal	goto with signal handling

     LIBRARY
	  Standard C Library (libc.a)

     SYNOPSIS
	  #include <setjmp.h>
	  void siglongjmp (
	       sigjmp_buf env,
	       int value );

     PARAMETERS
	  env  Specifies an address for	a sigjmp_buf structure.

	  value
	       Specifies any nonzero value.

     DESCRIPTION
	  The siglongjmp() function restores the environment saved by
	  the most recent sigsetjmp() function in the same process
	  with the corresponding sigjmp_buf parameter.

	  All accessible objects have values as	of the time
	  siglongjmp() was called, except that the values of objects
	  of automatic storage duration	that have been changed between
	  the sigsetjmp() call and siglongjmp()	call are indeter-
	  minate.

	  As it	bypasses the usual function call and return mechan-
	  isms,	the siglongjmp() function executes correctly in	con-
	  texts	of interrupts, signals,	and any	of their associated
	  functions.  However, if the siglongjmp() function is invoked
	  from a nested	signal handler (that is, from a	function
	  invoked as a result of a signal raised during	the handling
	  of another signal), the behavior is undefined.

	  The siglongjmp() function restores the saved signal mask if
	  and only if the env parameter	was initialized	by a call to
	  the sigsetjmp() function with	a nonzero savemask parameter.


     CAUTION
	  If automatic and register variables are changed after	the
	  sigsetjmp(), their values are	indeterminate after the	.nh
	  siglongjmp().	 You cannot assume that	these variables	are
	  restored to what they	were when the .nh sigsetjmp() was
	  called. Nor can you assume that they are set to whatever
	  value	they had when the function sequence containing the .nh
	  siglongjmp() was started.


	  If you want them to retain the values	they had when the
	  function sequence containing the .nh siglongjmp() is
	  started, declare them	as volatile.


     NOTES
	  AES Support Level: Full use

     RETURN VALUES
	  After	the siglongjmp() function is completed,	program	execu-
	  tion continues as if the corresponding call of the sig-
	  setjmp() function had	just returned the value	specified by
	  the value parameter.	The siglongjmp() function cannot cause
	  the sigsetjmp() function to return 0 (zero); if value	is 0,
	  the sigsetjmp() function returns 1.

     RELATED INFORMATION
	  Functions: setjmp(3),	sigprocmask(2),	sigsetjmp(3),
	  sigsuspend(2)