/*****************************************************************************

	copyright (c) Al Grabauskas, 1989

	this #include file gives definitions of codes used by runtime
	library routines when they call the exit() function, so that
	user exit traps can determine exactly what it was that caused
	the exit routine to be called. exit() itself, in addition to
	other changes to it, will always store the code it was passed
	in the global character variable Uexcode.

	since the exit code is a character (not an integer), it is sign
	extended by the compiler, and becomes, in effect negative at
	values of 128 or greater. please note this artifact of the 
	language.

	0 represents a "non-exception" condition by default (this fits
	in with the usage of the error flag by exit() when running in 
	a zcpr environment, the codes 128-255 are reserved for "system"
	routines, and 1-127 are for whatever use you desire to put them
	to. the values in the range 128-255 will be used from 255 down,
	so that if it turns out that relatively few values are needed
	for system codes, the user code space can be extended contiguously.
	as you can see, there are currently very few of them.
-*****************************************************************************/

#define	ConAbort	255	/* user abort thru Uconin() function	*/
				/*   in csyslib.c			*/
#define	PolAbort	254	/* user abort thru poll() function	*/
				/*   poll() not used in clib routines	*/
#define	RdirFail	253	/* failed to open redirected file	*/
				/*   in csyslib.c			*/
#define MemErr		252	/* memory failure in clib avail()	*/
				/*   function. this is an obsolete	*/
				/*   function used with the old		*/
				/*   memory scheme with smallalc.h	*/
				/* this is also returned if xfree()	*/
				/*   detects an attempt to free memory  */
				/*   to an unintialized block		*/

#define NoError		0	/* standard, successful exit		*/

/* end sysexits.h ************************************************************/