usr/src/usr.bin/make/lst.lib/lstDatum.c

/*
 * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Adam de Boor.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifndef lint
static char sccsid[] = "@(#)lstDatum.c  5.2 (Berkeley) %G%";
#endif /* not lint */

/*-
 * LstDatum.c --
 *      Return the datum associated with a list node.
 */

#include        "lstInt.h"

/*-
 *-----------------------------------------------------------------------
 * Lst_Datum --
 *      Return the datum stored in the given node.
 *
 * Results:
 *      The datum or (ick!) NIL if the node is invalid.
 *
 * Side Effects:
 *      None.
 *
 *-----------------------------------------------------------------------
 */
ClientData
Lst_Datum (ln)
    LstNode     ln;
{
    if (ln != NILLNODE) {
        return (((ListNode)ln)->datum);
    } else {
        return ((ClientData) NIL);
    }
}