diff options
Diffstat (limited to 'libguile/eq.c')
-rw-r--r-- | libguile/eq.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/libguile/eq.c b/libguile/eq.c new file mode 100644 index 000000000..ed6dc4e12 --- /dev/null +++ b/libguile/eq.c @@ -0,0 +1,162 @@ +/* Copyright (C) 1995,1996 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. + */ + +#include <stdio.h> +#include "_scm.h" + + +SCM_PROC1 (s_eq_p, "eq?", scm_tc7_rpsubr, scm_eq_p); +#ifdef __STDC__ +SCM +scm_eq_p (SCM x, SCM y) +#else +SCM +scm_eq_p (x, y) + SCM x; + SCM y; +#endif +{ + return ((x==y) + ? SCM_BOOL_T + : SCM_BOOL_F); +} + + +SCM_PROC1 (s_eqv_p, "eqv?", scm_tc7_rpsubr, scm_eqv_p); +#ifdef __STDC__ +SCM +scm_eqv_p (SCM x, SCM y) +#else +SCM +scm_eqv_p (x, y) + SCM x; + SCM y; +#endif +{ + 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); +#ifdef __STDC__ +SCM +scm_equal_p (SCM x, SCM y) +#else +SCM +scm_equal_p (x, y) + SCM x; + SCM y; +#endif +{ + SCM_CHECK_STACK; + tailrecurse: SCM_ASYNC_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; + } + /* 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_substring: + case scm_tc7_mb_substring: + case scm_tc7_mb_string: + case scm_tc7_string: return scm_string_equal_p(x, y); + 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; +} + + + + + +#ifdef __STDC__ +void +scm_init_eq (void) +#else +void +scm_init_eq () +#endif +{ +#include "eq.x" +} + |