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Diffstat (limited to 'libguile/gh_predicates.c')
-rw-r--r-- | libguile/gh_predicates.c | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/libguile/gh_predicates.c b/libguile/gh_predicates.c new file mode 100644 index 000000000..e0183955c --- /dev/null +++ b/libguile/gh_predicates.c @@ -0,0 +1,121 @@ +/* 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. + */ + + +/* type predicates and equality predicates */ + +#include <stdio.h> + +#include <gh.h> + +/* type predicates: tell you if an SCM object has a given type */ +int +gh_boolean_p (SCM val) +{ + return (scm_boolean_p (val) == SCM_BOOL_T) ? 1 : 0; +} +int +gh_symbol_p (SCM val) +{ + return (scm_symbol_p (val) == SCM_BOOL_T) ? 1 : 0; +} +int +gh_char_p (SCM val) +{ + return (scm_char_p (val) == SCM_BOOL_T) ? 1 : 0; +} +int +gh_vector_p (SCM val) +{ + return (scm_vector_p (val) == SCM_BOOL_T) ? 1 : 0; +} +int +gh_pair_p (SCM val) +{ + return (scm_pair_p (val) == SCM_BOOL_T) ? 1 : 0; +} +int +gh_number_p (SCM val) +{ + return (scm_number_p (val) == SCM_BOOL_T) ? 1 : 0; +} +int +gh_string_p (SCM val) +{ + return (scm_string_p (val) == SCM_BOOL_T) ? 1 : 0; +} +int +gh_procedure_p (SCM val) +{ + return (scm_procedure_p (val) == SCM_BOOL_T) ? 1 : 0; +} +int +gh_list_p (SCM val) +{ + return (scm_list_p (val) == SCM_BOOL_T) ? 1 : 0; +} +int +gh_inexact_p (SCM val) +{ + return (scm_inexact_p (val) == SCM_BOOL_T) ? 1 : 0; +} +int +gh_exact_p (SCM val) +{ + return (scm_exact_p (val) == SCM_BOOL_T) ? 1 : 0; +} + +/* the three types of equality */ +int +gh_eq_p (SCM x, SCM y) +{ + return (scm_eq_p (x, y) == SCM_BOOL_T) ? 1 : 0; +} +int +gh_eqv_p (SCM x, SCM y) +{ + return (scm_eqv_p (x, y) != SCM_BOOL_T) ? 1 : 0; +} +int +gh_equal_p (SCM x, SCM y) +{ + return (scm_equal_p (x, y) != SCM_BOOL_T) ? 1 : 0; +} |