mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-04-29 19:30:36 +02:00
53befeb700
(Not quite finished, the following will be done tomorrow. module/srfi/*.scm module/rnrs/*.scm module/scripts/*.scm testsuite/*.scm guile-readline/* )
82 lines
1.9 KiB
C
82 lines
1.9 KiB
C
/* Copyright (C) 1995, 1996, 2000, 2001, 2006, 2008 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 3 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., 51 Franklin Street, Fifth Floor, Boston, MA
|
||
* 02110-1301 USA
|
||
*/
|
||
|
||
|
||
|
||
#ifdef HAVE_CONFIG_H
|
||
# include <config.h>
|
||
#endif
|
||
|
||
#include "libguile/_scm.h"
|
||
|
||
#include "libguile/validate.h"
|
||
#include "libguile/boolean.h"
|
||
#include "libguile/lang.h"
|
||
#include "libguile/tags.h"
|
||
|
||
|
||
|
||
|
||
SCM_DEFINE (scm_not, "not", 1, 0, 0,
|
||
(SCM x),
|
||
"Return @code{#t} iff @var{x} is @code{#f}, else return @code{#f}.")
|
||
#define FUNC_NAME s_scm_not
|
||
{
|
||
return scm_from_bool (scm_is_false (x) || SCM_NILP (x));
|
||
}
|
||
#undef FUNC_NAME
|
||
|
||
|
||
SCM_DEFINE (scm_boolean_p, "boolean?", 1, 0, 0,
|
||
(SCM obj),
|
||
"Return @code{#t} iff @var{obj} is either @code{#t} or @code{#f}.")
|
||
#define FUNC_NAME s_scm_boolean_p
|
||
{
|
||
return scm_from_bool (scm_is_bool (obj) || SCM_NILP (obj));
|
||
}
|
||
#undef FUNC_NAME
|
||
|
||
int
|
||
scm_is_bool (SCM x)
|
||
{
|
||
return scm_is_eq (x, SCM_BOOL_F) || scm_is_eq (x, SCM_BOOL_T);
|
||
}
|
||
|
||
int
|
||
scm_to_bool (SCM x)
|
||
{
|
||
if (scm_is_eq (x, SCM_BOOL_F))
|
||
return 0;
|
||
else if (scm_is_eq (x, SCM_BOOL_T))
|
||
return 1;
|
||
else
|
||
scm_wrong_type_arg (NULL, 0, x);
|
||
}
|
||
|
||
void
|
||
scm_init_boolean ()
|
||
{
|
||
#include "libguile/boolean.x"
|
||
}
|
||
|
||
|
||
/*
|
||
Local Variables:
|
||
c-file-style: "gnu"
|
||
End:
|
||
*/
|