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62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
/* classes: h_files */
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#ifndef SCM_BOOLEAN_H
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#define SCM_BOOLEAN_H
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/* Copyright (C) 1995,1996,2000 Free Software Foundation, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "libguile/__scm.h"
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/* Boolean Values
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*
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*/
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#define SCM_FALSEP(x) (SCM_EQ_P ((x), SCM_BOOL_F))
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#define SCM_NFALSEP(x) (!SCM_FALSEP (x))
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#define SCM_BOOLP(x) (SCM_EQ_P ((x), SCM_BOOL_F) || SCM_EQ_P ((x), SCM_BOOL_T))
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/* Convert from a C boolean to a SCM boolean value */
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#define SCM_BOOL(f) ((f) ? SCM_BOOL_T : SCM_BOOL_F)
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/* Convert from a C boolean to a SCM boolean value and negate it */
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#define SCM_NEGATE_BOOL(f) ((f) ? SCM_BOOL_F : SCM_BOOL_T)
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/* SCM_BOOL_NOT returns the other boolean.
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* The order of ^s here is important for Borland C++ (!?!?!)
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*/
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#define SCM_BOOL_NOT(x) (SCM_PACK (SCM_UNPACK (x) \
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^ (SCM_UNPACK (SCM_BOOL_T) \
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^ SCM_UNPACK (SCM_BOOL_F))))
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SCM_API SCM scm_not (SCM x);
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SCM_API SCM scm_boolean_p (SCM obj);
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SCM_API void scm_init_boolean (void);
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#endif /* SCM_BOOLEAN_H */
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/*
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Local Variables:
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c-file-style: "gnu"
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End:
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*/
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