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/*
* label - label handling routines
*
* Copyright (C) 1999 David I. Bell
*
* Calc is open software; you can redistribute it and/or modify it under
* the terms of the version 2.1 of the GNU Lesser General Public License
* as published by the Free Software Foundation.
*
* Calc 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.
*
* A copy of version 2.1 of the GNU Lesser General Public License is
* distributed with calc under the filename COPYING-LGPL. You should have
* received a copy with calc; if not, write to Free Software Foundation, Inc.
* 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*
* @(#) $Revision: 29.4 $
* @(#) $Id: label.h,v 29.4 2001/06/08 21:00:58 chongo Exp $
* @(#) $Source: /usr/local/src/cmd/calc/RCS/label.h,v $
*
* Under source code control: 1990/02/15 01:48:33
* File existed as early as: before 1990
*
* Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
*/
#if !defined(__LABEL_H__)
#define __LABEL_H__
#if defined(CALC_SRC) /* if we are building from the calc source tree */
# include "zmath.h"
#else
# include <calc/zmath.h>
#endif
#define NULL_LABEL ((LABEL *) 0)
/*
* Label structures.
*/
typedef struct {
long l_offset; /* offset into code of label */
long l_chain; /* offset into code of undefined chain */
char *l_name; /* name of label if any */
} LABEL;
extern void initlabels(void);
extern void definelabel(char *name);
extern void addlabel(char *name);
extern void clearlabel(LABEL *lp);
extern void setlabel(LABEL *lp);
extern void uselabel(LABEL *lp);
extern void checklabels(void);
#endif /* !__LABEL_H__ */
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