libguile/boolean.c

   1 /*      Copyright (C) 1995,1996 Free Software Foundation, Inc.
   2  *
   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)
   6  * any later version.
   7  *
   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.
  12  *
  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, Inc., 59 Temple Place, Suite 330,
  16  * Boston, MA 02111-1307 USA
  17  *
  18  * As a special exception, the Free Software Foundation gives permission
  19  * for additional uses of the text contained in its release of GUILE.
  20  *
  21  * The exception is that, if you link the GUILE library with other files
  22  * to produce an executable, this does not by itself cause the
  23  * resulting executable to be covered by the GNU General Public License.
  24  * Your use of that executable is in no way restricted on account of
  25  * linking the GUILE library code into it.
  26  *
  27  * This exception does not however invalidate any other reasons why
  28  * the executable file might be covered by the GNU General Public License.
  29  *
  30  * This exception applies only to the code released by the
  31  * Free Software Foundation under the name GUILE.  If you copy
  32  * code from other Free Software Foundation releases into a copy of
  33  * GUILE, as the General Public License permits, the exception does
  34  * not apply to the code that you add in this way.  To avoid misleading
  35  * anyone as to the status of such modified files, you must delete
  36  * this exception notice from them.
  37  *
  38  * If you write modifications of your own for GUILE, it is your choice
  39  * whether to permit this exception to apply to your modifications.
  40  * If you do not wish that, delete this exception notice.  */
  41
  42 /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
  43    gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
  44
  45 \f
  46
  47 #include <stdio.h>
  48 #include "libguile/_scm.h"
  49
  50 #include "libguile/validate.h"
  51 #include "libguile/boolean.h"
  52 \f
  53
  54
  55 SCM_DEFINE (scm_not, "not", 1, 0, 0,
  56             (SCM x),
  57             "Return #t iff X is #f, else return #f.\n")
  58 #define FUNC_NAME s_scm_not
  59 {
  60   return SCM_BOOL(SCM_FALSEP(x));
  61 }
  62 #undef FUNC_NAME
  63
  64
  65 SCM_DEFINE (scm_boolean_p, "boolean?", 1, 0, 0,
  66            (SCM obj),
  67             "Return #t iff OBJ is either #t or #f.\n")
  68 #define FUNC_NAME s_scm_boolean_p
  69 {
  70   return SCM_BOOL (SCM_BOOLP (obj));
  71 }
  72 #undef FUNC_NAME
  73
  74
  75
  76 void
  77 scm_init_boolean ()
  78 {
  79 #include "libguile/boolean.x"
  80 }
  81
  82
  83 /*
  84   Local Variables:
  85   c-file-style: "gnu"
  86   End:
  87 */