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76 lines
2.6 KiB
C
76 lines
2.6 KiB
C
/* classes: h_files */
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#ifndef BOOLEANH
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#define BOOLEANH
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/* Copyright (C) 1995,1996 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* As a special exception, the Free Software Foundation gives permission
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* for additional uses of the text contained in its release of GUILE.
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*
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* The exception is that, if you link the GUILE library with other files
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* to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the GUILE library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the
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* Free Software Foundation under the name GUILE. If you copy
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* code from other Free Software Foundation releases into a copy of
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* GUILE, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for GUILE, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice.
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*/
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#include "__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_BOOL_F == (x))
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#define SCM_NFALSEP(x) (SCM_BOOL_F != (x))
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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) ((x) ^ (SCM_BOOL_T ^ SCM_BOOL_F))
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#ifdef __STDC__
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extern SCM scm_not(SCM x);
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extern SCM scm_boolean_p(SCM obj);
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extern void scm_init_boolean (void);
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#else /* STDC */
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extern SCM scm_not();
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extern SCM scm_boolean_p();
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extern void scm_init_boolean ();
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#endif /* STDC */
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#endif /* BOOLEANH */
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