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guile/libguile/gh_list.c
Jim Blandy 1e598865e9 * backtrace.c, backtrace.h, debug.c, debug.h, eq.c,
gdb_interface.h, gdbint.c, gdbint.h, gh_data.c, gh_init.c,
gh_io.c, gh_list.c, gh_predicates.c, gh_test_c.c, gh_test_repl.c,
init.c, net_db.c, options.c, options.h, ports.c, print.c, read.c,
script.h, snarf.h, srcprop.c, srcprop.h, stacks.c, stacks.h,
throw.c: Update copyright years; these files have been worked on
significantly in 1997, but only had copyright years for 1996.
Also, change name of copyright holder on some from Mikael
Djurfeldt to Free Software Foundation; he has signed papers
assigning the changes to the FSF.
1997-05-16 09:14:28 +00:00

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/* Copyright (C) 1995,1996,1997 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.
*/
/* list manipulation */
#include <stdio.h>
#include <gh.h>
/* returns the length of a list */
unsigned long
gh_list_length (SCM l)
{
return gh_scm2ulong (scm_list_length (l));
}
/* list operations */
/* analogous to the Scheme cons operator */
SCM
gh_cons (SCM x, SCM y)
{
return scm_cons (x, y);
}
/* gh_list(SCM elt, ...) is implemented as a macro in gh.h. */
/* 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);
}