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/* classes: h_files */
#ifndef SCM_BOOLEAN_H
#define SCM_BOOLEAN_H
/* Copyright (C) 1995,1996,2000 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "libguile/__scm.h"
/* Boolean Values
*
*/
#define SCM_FALSEP(x) (SCM_EQ_P ((x), SCM_BOOL_F))
#define SCM_NFALSEP(x) (!SCM_FALSEP (x))
#define SCM_BOOLP(x) (SCM_EQ_P ((x), SCM_BOOL_F) || SCM_EQ_P ((x), SCM_BOOL_T))
/* Convert from a C boolean to a SCM boolean value */
#define SCM_BOOL(f) ((f) ? SCM_BOOL_T : SCM_BOOL_F)
/* Convert from a C boolean to a SCM boolean value and negate it */
#define SCM_NEGATE_BOOL(f) ((f) ? SCM_BOOL_F : SCM_BOOL_T)
/* SCM_BOOL_NOT returns the other boolean.
* The order of ^s here is important for Borland C++ (!?!?!)
*/
#define SCM_BOOL_NOT(x) (SCM_PACK (SCM_UNPACK (x) \
^ (SCM_UNPACK (SCM_BOOL_T) \
^ SCM_UNPACK (SCM_BOOL_F))))
SCM_API SCM scm_not (SCM x);
SCM_API SCM scm_boolean_p (SCM obj);
SCM_API void scm_init_boolean (void);
#endif /* SCM_BOOLEAN_H */
/*
Local Variables:
c-file-style: "gnu"
End:
*/
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