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-rw-r--r--libguile/boolean.c28
1 files changed, 19 insertions, 9 deletions
diff --git a/libguile/boolean.c b/libguile/boolean.c
index d7091bbef..452b8adda 100644
--- a/libguile/boolean.c
+++ b/libguile/boolean.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995, 1996, 2000, 2001, 2006, 2008, 2009 Free Software Foundation, Inc.
+/* Copyright (C) 1995, 1996, 2000, 2001, 2006, 2008, 2009, 2010 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
@@ -26,7 +26,6 @@
#include "libguile/validate.h"
#include "libguile/boolean.h"
-#include "libguile/lang.h"
#include "libguile/tags.h"
#include "verify.h"
@@ -49,35 +48,34 @@ verify (SCM_VALUES_DIFFER_IN_EXACTLY_ONE_BIT_POSITION \
(SCM_ELISP_NIL, SCM_EOL));
verify (SCM_VALUES_DIFFER_IN_EXACTLY_TWO_BIT_POSITIONS \
(SCM_ELISP_NIL, SCM_BOOL_F, SCM_BOOL_T, \
- SCM_XXX_ANOTHER_BOOLEAN_DONT_USE));
+ SCM_XXX_ANOTHER_BOOLEAN_DONT_USE_0));
verify (SCM_VALUES_DIFFER_IN_EXACTLY_TWO_BIT_POSITIONS \
(SCM_ELISP_NIL, SCM_BOOL_F, SCM_EOL, \
SCM_XXX_ANOTHER_LISP_FALSE_DONT_USE));
SCM_DEFINE (scm_not, "not", 1, 0, 0,
(SCM x),
- "Return @code{#t} iff @var{x} is @code{#f}, else return @code{#f}.")
+ "Return @code{#t} iff @var{x} is false, else return @code{#f}.")
#define FUNC_NAME s_scm_not
{
- return scm_from_bool (scm_is_false_or_nil (x));
+ return scm_from_bool (scm_is_false (x));
}
#undef FUNC_NAME
SCM_DEFINE (scm_boolean_p, "boolean?", 1, 0, 0,
(SCM obj),
- "Return @code{#t} iff @var{obj} is either @code{#t} or @code{#f}.")
+ "Return @code{#t} iff @var{obj} is @code{#t} or false.")
#define FUNC_NAME s_scm_boolean_p
{
- return scm_from_bool (scm_is_bool_or_nil (obj));
+ return scm_from_bool (scm_is_bool (obj));
}
#undef FUNC_NAME
int
scm_to_bool (SCM x)
{
- /* XXX Should this first test use scm_is_false_or_nil instead? */
- if (scm_is_eq (x, SCM_BOOL_F))
+ if (scm_is_false (x))
return 0;
else if (scm_is_eq (x, SCM_BOOL_T))
return 1;
@@ -85,6 +83,18 @@ scm_to_bool (SCM x)
scm_wrong_type_arg (NULL, 0, x);
}
+/* We keep this primitive as a function in addition to the same-named macro
+ because some applications (e.g., GNU LilyPond 2.13.9) expect it to be a
+ function. */
+#undef scm_is_bool
+int
+scm_is_bool (SCM obj)
+{
+ /* This must match the macro definition of `scm_is_bool ()'. */
+ return scm_is_bool_or_nil (obj);
+}
+
+
void
scm_init_boolean ()
{