1 /* Copyright (C) 1995,1996,1997 Free Software Foundation, Inc.
3 * This program is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License as published by
5 * the Free Software Foundation; either version 2, or (at your option)
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this software; see the file COPYING. If not, write to
15 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
17 * As a special exception, the Free Software Foundation gives permission
18 * for additional uses of the text contained in its release of GUILE.
20 * The exception is that, if you link the GUILE library with other files
21 * to produce an executable, this does not by itself cause the
22 * resulting executable to be covered by the GNU General Public License.
23 * Your use of that executable is in no way restricted on account of
24 * linking the GUILE library code into it.
26 * This exception does not however invalidate any other reasons why
27 * the executable file might be covered by the GNU General Public License.
29 * This exception applies only to the code released by the
30 * Free Software Foundation under the name GUILE. If you copy
31 * code from other Free Software Foundation releases into a copy of
32 * GUILE, as the General Public License permits, the exception does
33 * not apply to the code that you add in this way. To avoid misleading
34 * anyone as to the status of such modified files, you must delete
35 * this exception notice from them.
37 * If you write modifications of your own for GUILE, it is your choice
38 * whether to permit this exception to apply to your modifications.
39 * If you do not wish that, delete this exception notice.
43 /* type predicates and equality predicates */
49 /* type predicates: tell you if an SCM object has a given type */
51 gh_boolean_p (SCM val
)
53 return (scm_boolean_p (val
) == SCM_BOOL_T
) ? 1 : 0;
58 return (scm_symbol_p (val
) == SCM_BOOL_T
) ? 1 : 0;
63 return (scm_char_p (val
) == SCM_BOOL_T
) ? 1 : 0;
68 return (scm_vector_p (val
) == SCM_BOOL_T
) ? 1 : 0;
73 return (scm_pair_p (val
) == SCM_BOOL_T
) ? 1 : 0;
78 return (scm_number_p (val
) == SCM_BOOL_T
) ? 1 : 0;
83 return (scm_string_p (val
) == SCM_BOOL_T
) ? 1 : 0;
86 gh_procedure_p (SCM val
)
88 return (scm_procedure_p (val
) == SCM_BOOL_T
) ? 1 : 0;
93 return (scm_list_p (val
) == SCM_BOOL_T
) ? 1 : 0;
96 gh_inexact_p (SCM val
)
98 return (scm_inexact_p (val
) == SCM_BOOL_T
) ? 1 : 0;
103 return (scm_exact_p (val
) == SCM_BOOL_T
) ? 1 : 0;
106 /* the three types of equality */
108 gh_eq_p (SCM x
, SCM y
)
110 return (scm_eq_p (x
, y
) == SCM_BOOL_T
) ? 1 : 0;
113 gh_eqv_p (SCM x
, SCM y
)
115 return (scm_eqv_p (x
, y
) != SCM_BOOL_T
) ? 1 : 0;
118 gh_equal_p (SCM x
, SCM y
)
120 return (scm_equal_p (x
, y
) != SCM_BOOL_T
) ? 1 : 0;