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/* Copyright (C) 1995,1996,1997,1998 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. */
#include <stdio.h>
#include "_scm.h"
#include "ramap.h"
#include "stackchk.h"
#include "strorder.h"
#include "smob.h"
#include "unif.h"
#include "eq.h"
SCM_PROC1 (s_eq_p, "eq?", scm_tc7_rpsubr, scm_eq_p);
SCM
scm_eq_p (x, y)
SCM x;
SCM y;
{
return ((x==y)
? SCM_BOOL_T
: SCM_BOOL_F);
}
SCM_PROC1 (s_eqv_p, "eqv?", scm_tc7_rpsubr, scm_eqv_p);
SCM
scm_eqv_p (x, y)
SCM x;
SCM y;
{
if (x==y) return SCM_BOOL_T;
if SCM_IMP(x) return SCM_BOOL_F;
if SCM_IMP(y) return SCM_BOOL_F;
/* this ensures that types and scm_length are the same. */
if (SCM_CAR(x) != SCM_CAR(y)) return SCM_BOOL_F;
if SCM_NUMP(x) {
# ifdef SCM_BIGDIG
if SCM_BIGP(x) return (0==scm_bigcomp(x, y)) ? SCM_BOOL_T : SCM_BOOL_F;
# endif
#ifdef SCM_FLOATS
if (SCM_REALPART(x) != SCM_REALPART(y)) return SCM_BOOL_F;
if (SCM_CPLXP(x) && (SCM_IMAG(x) != SCM_IMAG(y))) return SCM_BOOL_F;
#endif
return SCM_BOOL_T;
}
return SCM_BOOL_F;
}
SCM_PROC1 (s_equal_p, "equal?", scm_tc7_rpsubr, scm_equal_p);
SCM
scm_equal_p (x, y)
SCM x;
SCM y;
{
SCM_CHECK_STACK;
tailrecurse: SCM_TICK;
if (x==y) return SCM_BOOL_T;
if (SCM_IMP(x)) return SCM_BOOL_F;
if (SCM_IMP(y)) return SCM_BOOL_F;
if (SCM_CONSP(x) && SCM_CONSP(y)) {
if SCM_FALSEP(scm_equal_p(SCM_CAR(x), SCM_CAR(y))) return SCM_BOOL_F;
x = SCM_CDR(x);
y = SCM_CDR(y);
goto tailrecurse;
}
if (SCM_TYP7S (x) == scm_tc7_string
&& SCM_TYP7S (y) == scm_tc7_string)
return scm_string_equal_p (x, y);
/* This ensures that types and scm_length are the same. */
if (SCM_CAR(x) != SCM_CAR(y)) return SCM_BOOL_F;
switch (SCM_TYP7(x)) {
default: return SCM_BOOL_F;
case scm_tc7_vector:
case scm_tc7_wvect:
return scm_vector_equal_p(x, y);
case scm_tc7_smob: {
int i = SCM_SMOBNUM(x);
if (!(i < scm_numsmob)) return SCM_BOOL_F;
if (scm_smobs[i].equalp)
return (scm_smobs[i].equalp)(x, y);
else
return SCM_BOOL_F;
}
case scm_tc7_bvect: case scm_tc7_uvect: case scm_tc7_ivect:
case scm_tc7_fvect: case scm_tc7_cvect: case scm_tc7_dvect:
case scm_tc7_svect:
#ifdef LONGLONGS
case scm_tc7_llvect:
#endif
case scm_tc7_byvect:
if ( scm_tc16_array
&& scm_smobs[0x0ff & (scm_tc16_array >> 8)].equalp)
return scm_array_equal_p(x, y);
}
return SCM_BOOL_F;
}
void
scm_init_eq ()
{
#include "eq.x"
}
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