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ff4670212a
* eq.c, eval.c, list.c, ramap.c, vectors.c: Always write parens around the condition of an `if', `while', etc., even if the condition is a macro invocation that expands to something surrounded by parens. It's more readable.
151 lines
4.3 KiB
C
151 lines
4.3 KiB
C
/* Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA
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*
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* As a special exception, the Free Software Foundation gives permission
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* for additional uses of the text contained in its release of GUILE.
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*
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* The exception is that, if you link the GUILE library with other files
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* to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the GUILE library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the
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* Free Software Foundation under the name GUILE. If you copy
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* code from other Free Software Foundation releases into a copy of
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* GUILE, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for GUILE, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice. */
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#include <stdio.h>
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#include "_scm.h"
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#include "ramap.h"
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#include "stackchk.h"
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#include "strorder.h"
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#include "smob.h"
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#include "unif.h"
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#include "eq.h"
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SCM_PROC1 (s_eq_p, "eq?", scm_tc7_rpsubr, scm_eq_p);
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SCM
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scm_eq_p (x, y)
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SCM x;
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SCM y;
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{
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return ((x==y)
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? SCM_BOOL_T
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: SCM_BOOL_F);
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}
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SCM_PROC1 (s_eqv_p, "eqv?", scm_tc7_rpsubr, scm_eqv_p);
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SCM
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scm_eqv_p (x, y)
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SCM x;
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SCM y;
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{
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if (x==y) return SCM_BOOL_T;
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if (SCM_IMP(x)) return SCM_BOOL_F;
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if (SCM_IMP(y)) return SCM_BOOL_F;
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/* this ensures that types and scm_length are the same. */
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if (SCM_CAR(x) != SCM_CAR(y)) return SCM_BOOL_F;
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if (SCM_NUMP(x)) {
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# ifdef SCM_BIGDIG
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if (SCM_BIGP(x)) return (0==scm_bigcomp(x, y)) ? SCM_BOOL_T : SCM_BOOL_F;
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# endif
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#ifdef SCM_FLOATS
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if (SCM_REALPART(x) != SCM_REALPART(y)) return SCM_BOOL_F;
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if (SCM_CPLXP(x) && (SCM_IMAG(x) != SCM_IMAG(y))) return SCM_BOOL_F;
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#endif
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return SCM_BOOL_T;
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}
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return SCM_BOOL_F;
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}
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SCM_PROC1 (s_equal_p, "equal?", scm_tc7_rpsubr, scm_equal_p);
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SCM
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scm_equal_p (x, y)
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SCM x;
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SCM y;
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{
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SCM_CHECK_STACK;
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tailrecurse: SCM_TICK;
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if (x==y) return SCM_BOOL_T;
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if (SCM_IMP(x)) return SCM_BOOL_F;
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if (SCM_IMP(y)) return SCM_BOOL_F;
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if (SCM_CONSP(x) && SCM_CONSP(y)) {
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if SCM_FALSEP(scm_equal_p(SCM_CAR(x), SCM_CAR(y))) return SCM_BOOL_F;
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x = SCM_CDR(x);
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y = SCM_CDR(y);
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goto tailrecurse;
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}
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if (SCM_TYP7S (x) == scm_tc7_string
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&& SCM_TYP7S (y) == scm_tc7_string)
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return scm_string_equal_p (x, y);
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/* This ensures that types and scm_length are the same. */
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if (SCM_CAR(x) != SCM_CAR(y)) return SCM_BOOL_F;
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switch (SCM_TYP7(x)) {
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default: return SCM_BOOL_F;
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case scm_tc7_vector:
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case scm_tc7_wvect:
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return scm_vector_equal_p(x, y);
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case scm_tc7_smob: {
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int i = SCM_SMOBNUM(x);
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if (!(i < scm_numsmob)) return SCM_BOOL_F;
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if (scm_smobs[i].equalp)
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return (scm_smobs[i].equalp)(x, y);
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else
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return SCM_BOOL_F;
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}
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case scm_tc7_bvect: case scm_tc7_uvect: case scm_tc7_ivect:
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case scm_tc7_fvect: case scm_tc7_cvect: case scm_tc7_dvect:
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case scm_tc7_svect:
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#ifdef LONGLONGS
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case scm_tc7_llvect:
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#endif
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case scm_tc7_byvect:
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if ( scm_tc16_array
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&& scm_smobs[0x0ff & (scm_tc16_array >> 8)].equalp)
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return scm_array_equal_p(x, y);
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}
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return SCM_BOOL_F;
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}
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void
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scm_init_eq ()
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{
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#include "eq.x"
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}
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