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Diffstat (limited to 'libguile/boolean.c')
-rw-r--r-- | libguile/boolean.c | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/libguile/boolean.c b/libguile/boolean.c new file mode 100644 index 000000000..cc8c63382 --- /dev/null +++ b/libguile/boolean.c @@ -0,0 +1,88 @@ +/* Copyright (C) 1995,1996 Free Software Foundation, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this software; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * + * As a special exception, the Free Software Foundation gives permission + * for additional uses of the text contained in its release of GUILE. + * + * The exception is that, if you link the GUILE library with other files + * to produce an executable, this does not by itself cause the + * resulting executable to be covered by the GNU General Public License. + * Your use of that executable is in no way restricted on account of + * linking the GUILE library code into it. + * + * This exception does not however invalidate any other reasons why + * the executable file might be covered by the GNU General Public License. + * + * This exception applies only to the code released by the + * Free Software Foundation under the name GUILE. If you copy + * code from other Free Software Foundation releases into a copy of + * GUILE, as the General Public License permits, the exception does + * not apply to the code that you add in this way. To avoid misleading + * anyone as to the status of such modified files, you must delete + * this exception notice from them. + * + * If you write modifications of your own for GUILE, it is your choice + * whether to permit this exception to apply to your modifications. + * If you do not wish that, delete this exception notice. + */ + + +#include <stdio.h> +#include "_scm.h" + + + +SCM_PROC(s_not, "not", 1, 0, 0, scm_not); +#ifdef __STDC__ +SCM +scm_not(SCM x) +#else +SCM +scm_not(x) + SCM x; +#endif +{ + return SCM_FALSEP(x) ? SCM_BOOL_T : SCM_BOOL_F; +} + + +SCM_PROC(s_boolean_p, "boolean?", 1, 0, 0, scm_boolean_p); +#ifdef __STDC__ +SCM +scm_boolean_p(SCM obj) +#else +SCM +scm_boolean_p(obj) + SCM obj; +#endif +{ + if (SCM_BOOL_F==obj) return SCM_BOOL_T; + if (SCM_BOOL_T==obj) return SCM_BOOL_T; + return SCM_BOOL_F; +} + + +#ifdef __STDC__ +void +scm_init_boolean (void) +#else +void +scm_init_boolean () +#endif +{ +#include "boolean.x" +} + |