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-rw-r--r--libguile/boolean.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/libguile/boolean.c b/libguile/boolean.c
index 3bf672d6d..f8c773839 100644
--- a/libguile/boolean.c
+++ b/libguile/boolean.c
@@ -62,6 +62,14 @@ SCM_DEFINE (scm_not, "not", 1, 0, 0,
}
#undef FUNC_NAME
+SCM_DEFINE (scm_nil_p, "nil?", 1, 0, 0,
+ (SCM x),
+ "Return @code{#t} iff @var{x} is nil, else return @code{#f}.")
+#define FUNC_NAME s_scm_nil_p
+{
+ return scm_from_bool (scm_is_lisp_false (x));
+}
+#undef FUNC_NAME
SCM_DEFINE (scm_boolean_p, "boolean?", 1, 0, 0,
(SCM obj),