[unix-history] / usr / src / usr.bin / pascal / libpc / NIL.c

/* Copyright (c) 1979 Regents of the University of California */

static char sccsid[] = "@(#)NIL.c 1.1 %G%";

#include "h00vars.h"
#include "h01errs.h"

char *
NIL(ptr)

	char	*ptr;		/* pointer to struct */
{
	if (ptr > _maxptr || ptr < _minptr) {
		ERROR(ENILPTR, 0);
		return;
	}
	return ptr;
}
Commit	Line	Data
dadba5a3 KM	1	/* Copyright (c) 1979 Regents of the University of California */
	2
	3	static char sccsid[] = "@(#)NIL.c 1.1 %G%";
	4
	5	#include "h00vars.h"
	6	#include "h01errs.h"
	7
	8	char *
	9	NIL(ptr)
	10
	11	char ptr; / pointer to struct */
	12	{
	13	if (ptr > _maxptr \|\| ptr < _minptr) {
	14	ERROR(ENILPTR, 0);
	15	return;
	16	}
	17	return ptr;
	18	}