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/* Copyright (C) 1995, 1996, 2000, 2001, 2006 Free Software Foundation, Inc.
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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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* 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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* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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#include "libguile/_scm.h"
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#include "libguile/validate.h"
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#include "libguile/boolean.h"
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#include "libguile/lang.h"
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#include "libguile/tags.h"
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SCM_DEFINE (scm_not, "not", 1, 0, 0,
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"Return @code{#t} iff @var{x} is @code{#f}, else return @code{#f}.")
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#define FUNC_NAME s_scm_not
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return scm_from_bool (scm_is_false (x) || SCM_NILP (x));
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SCM_DEFINE (scm_boolean_p, "boolean?", 1, 0, 0,
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"Return @code{#t} iff @var{obj} is either @code{#t} or @code{#f}.")
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#define FUNC_NAME s_scm_boolean_p
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return scm_from_bool (scm_is_bool (obj) || SCM_NILP (obj));
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return scm_is_eq (x, SCM_BOOL_F) || scm_is_eq (x, SCM_BOOL_T);
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if (scm_is_eq (x, SCM_BOOL_F))
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else if (scm_is_eq (x, SCM_BOOL_T))
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scm_wrong_type_arg (NULL, 0, x);
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#include "libguile/boolean.x"