X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=tests%2Farith.pure.lisp;h=3452abea638a676e5ff0a39535e932117f5be43f;hb=ba02429b75951fc407be01c44fdcb01ff2908707;hp=16e015d6c7a637f485446bffd913cfc508e1e2ca;hpb=88871271448fb82abbc913997b9b5ea5a92054f8;p=sbcl.git

diff --git a/tests/arith.pure.lisp b/tests/arith.pure.lisp
index 16e015d..3452abe 100644
--- a/tests/arith.pure.lisp
+++ b/tests/arith.pure.lisp
@@ -123,3 +123,25 @@
 	    (compile nil '(lambda (x) (declare (bit x)) (+ x #xf0000000)))
 	    1)
 	   #xf0000001))
+
+;;; LOGBITP on bignums:
+(dolist (x '(((1+ most-positive-fixnum) 1 nil)
+	     ((1+ most-positive-fixnum) -1 t)
+	     ((1+ most-positive-fixnum) (1+ most-positive-fixnum) nil)
+	     ((1+ most-positive-fixnum) (1- most-negative-fixnum) t)
+	     (1 (ash most-negative-fixnum 1) nil)
+	     (29 most-negative-fixnum t)
+	     (30 (ash most-negative-fixnum 1) t)
+	     (31 (ash most-negative-fixnum 1) t)
+	     (64 (ash most-negative-fixnum 36) nil)
+	     (65 (ash most-negative-fixnum 36) t)))
+  (destructuring-bind (index int result) x
+    (assert (eq (eval `(logbitp ,index ,int)) result))))
+
+;;; off-by-1 type inference error for %DPB and %DEPOSIT-FIELD:
+(let ((f (compile nil '(lambda (b)
+                        (integer-length (dpb b (byte 4 28) -1005))))))
+  (assert (= (funcall f 1230070) 32)))
+(let ((f (compile nil '(lambda (b)
+                        (integer-length (deposit-field b (byte 4 28) -1005))))))
+  (assert (= (funcall f 1230070) 32)))