libguile/boolean.c

   1 /*      Copyright (C) 1995, 1996, 2000, 2001 Free Software Foundation, Inc.
   2  *
   3  * This library is free software; you can redistribute it and/or
   4  * modify it under the terms of the GNU Lesser General Public
   5  * License as published by the Free Software Foundation; either
   6  * version 2.1 of the License, or (at your option) any later version.
   7  *
   8  * This library 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 GNU
  11  * Lesser General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU Lesser General Public
  14  * License along with this library; if not, write to the Free Software
  15  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  16  */
  17
  18
  19 \f
  20
  21 #include "libguile/_scm.h"
  22
  23 #include "libguile/validate.h"
  24 #include "libguile/boolean.h"
  25 #include "libguile/lang.h"
  26 \f
  27
  28
  29 SCM_DEFINE (scm_not, "not", 1, 0, 0,
  30             (SCM x),
  31             "Return @code{#t} iff @var{x} is @code{#f}, else return @code{#f}.")
  32 #define FUNC_NAME s_scm_not
  33 {
  34   return SCM_BOOL(SCM_FALSEP (x) || SCM_NILP (x));
  35 }
  36 #undef FUNC_NAME
  37
  38
  39 SCM_DEFINE (scm_boolean_p, "boolean?", 1, 0, 0,
  40            (SCM obj),
  41             "Return @code{#t} iff @var{obj} is either @code{#t} or @code{#f}.")
  42 #define FUNC_NAME s_scm_boolean_p
  43 {
  44   return SCM_BOOL (SCM_BOOLP (obj) || SCM_NILP (obj));
  45 }
  46 #undef FUNC_NAME
  47
  48
  49
  50 void
  51 scm_init_boolean ()
  52 {
  53 #include "libguile/boolean.x"
  54 }
  55
  56
  57 /*
  58   Local Variables:
  59   c-file-style: "gnu"
  60   End:
  61 */