merges r23730 from trunk into ruby_1_9_1.

--
* numeric.c (flo_cmp): Infinity is greater than any bignum
  number.  [ruby-dev:38672]

* bignum.c (rb_big_cmp): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_1@23798 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 9 insertions, 1 deletions

diff --git a/bignum.c b/bignum.c
index eb021b801f..0d7fe2bcda 100644
--- a/bignum.c
+++ b/bignum.c
@@ -1260,7 +1260,15 @@ rb_big_cmp(VALUE x, VALUE y)
 	break;
 
       case T_FLOAT:
-	return rb_dbl_cmp(rb_big2dbl(x), RFLOAT_VALUE(y));
+	{
+	    double a = RFLOAT_VALUE(y);
+
+	    if (isinf(a)) {
+		if (a > 0.0) return INT2FIX(-1);
+		else return INT2FIX(1);
+	    }
+	    return rb_dbl_cmp(rb_big2dbl(x), a);
+	}
 
       default:
 	return rb_num_coerce_cmp(x, y, rb_intern("<=>"));