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/* Copyright (C) 1995,1996,1997, 2000 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, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 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. */
/* list manipulation */
#include "libguile/gh.h"
/* returns the length of a list */
unsigned long
gh_length (SCM l)
{
return gh_scm2ulong (scm_length (l));
}
/* list operations */
/* gh_list(SCM elt, ...) is implemented as a macro in gh.h. */
/* gh_append() takes a args, which is a list of lists, and appends
them all together into a single list, which is returned. This is
equivalent to the Scheme procedure (append list1 list2 ...) */
SCM
gh_append(SCM args)
{
return scm_append(args);
}
SCM
gh_append2(SCM l1, SCM l2)
{
return scm_append(scm_listify(l1, l2, SCM_UNDEFINED));
}
SCM
gh_append3(SCM l1, SCM l2, SCM l3)
{
return scm_append(scm_listify(l1, l2, l3, SCM_UNDEFINED));
}
SCM
gh_append4(SCM l1, SCM l2, SCM l3, SCM l4)
{
return scm_append(scm_listify(l1, l2, l3, l4, SCM_UNDEFINED));
}
/* gh_reverse() is defined as a macro in gh.h */
/* gh_list_tail() is defined as a macro in gh.h */
/* gh_list_ref() is defined as a macro in gh.h */
/* gh_memq() is defined as a macro in gh.h */
/* gh_memv() is defined as a macro in gh.h */
/* gh_member() is defined as a macro in gh.h */
/* gh_assq() is defined as a macro in gh.h */
/* gh_assv() is defined as a macro in gh.h */
/* gh_assoc() is defined as a macro in gh.h */
/* analogous to the Scheme cons operator */
SCM
gh_cons (SCM x, SCM y)
{
return scm_cons (x, y);
}
/* analogous to the Scheme car operator */
SCM
gh_car (SCM x)
{
return SCM_CAR (x);
}
/* analogous to the Scheme cdr operator */
SCM
gh_cdr (SCM x)
{
return SCM_CDR (x);
}
/* now for the multiple car/cdr utility procedures */
SCM
gh_caar (SCM x)
{
return SCM_CAAR (x);
}
SCM
gh_cadr (SCM x)
{
return SCM_CADR (x);
}
SCM
gh_cdar (SCM x)
{
return SCM_CDAR (x);
}
SCM
gh_cddr (SCM x)
{
return SCM_CDDR (x);
}
SCM
gh_caaar (SCM x)
{
return SCM_CAAAR (x);
}
SCM
gh_caadr (SCM x)
{
return SCM_CAADR (x);
}
SCM
gh_cadar (SCM x)
{
return SCM_CADAR (x);
}
SCM
gh_caddr (SCM x)
{
return SCM_CADDR (x);
}
SCM
gh_cdaar (SCM x)
{
return SCM_CDAAR (x);
}
SCM
gh_cdadr (SCM x)
{
return SCM_CDADR (x);
}
SCM
gh_cddar (SCM x)
{
return SCM_CDDAR (x);
}
SCM
gh_cdddr (SCM x)
{
return SCM_CDDDR (x);
}
/* equivalent to (set-car! pair value) */
SCM
gh_set_car_x(SCM pair, SCM value)
{
return scm_set_car_x(pair, value);
}
/* equivalent to (set-cdr! pair value) */
SCM
gh_set_cdr_x(SCM pair, SCM value)
{
return scm_set_cdr_x(pair, value);
}
/*
Local Variables:
c-file-style: "gnu"
End:
*/
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