X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=tests%2Ffloat.pure.lisp;h=ad9b77b107cb4f1d90bf4121741ab68bc75cd9dd;hb=b3e7d6608689a639cb774e2ce15bb5bacaed5179;hp=c957c9f0795701bce5b15a03c08e83d8c3046288;hpb=1c91b0bc7eb814af6a8c58a99a83a024716138e8;p=sbcl.git

diff --git a/tests/float.pure.lisp b/tests/float.pure.lisp
index c957c9f..ad9b77b 100644
--- a/tests/float.pure.lisp
+++ b/tests/float.pure.lisp
@@ -58,9 +58,40 @@
 (when (subtypep 'single-float 'short-float)
   (assert (eql least-positive-single-float least-positive-short-float)))
 
-#+nil ; bug 269
-(let ((f (eval 'least-positive-double-float)))
-  (assert (eql (multiple-value-bind (signif expon sign)
-                   (integer-decode-float f)
-                 (scale-float (float signif f) expon))
-               f)))
+;;; bug found by Paul Dietz: FFLOOR and similar did not work for integers
+(let ((tests '(((ffloor -8 3) (-3.0 1))
+               ((fround -8 3) (-3.0 1))
+               ((ftruncate -8 3) (-2.0 -2))
+               ((fceiling -8 3) (-2.0 -2)))))
+  (loop for (exp res) in tests
+        for real-res = (multiple-value-list (eval exp))
+        do (assert (equal real-res res))))
+
+;;; bug 45b reported by PVE
+(dolist (type '(short single double long))
+  (dolist (sign '(positive negative))
+    (let* ((name (find-symbol (format nil "LEAST-~A-~A-FLOAT"
+                                      sign type)
+                              :cl))
+           (value (symbol-value name)))
+      (assert (zerop (/ value 2))))))
+
+;;; bug found by Paul Dietz: bad rounding on small floats
+(assert (= (fround least-positive-short-float least-positive-short-float) 1.0))
+
+;;; bug found by Peter Seibel: scale-float was only accepting float
+;;; exponents, when it should accept all integers.  (also bug #269)
+(assert (= (multiple-value-bind (significand expt sign)
+	       (integer-decode-float least-positive-double-float)
+	     (* (scale-float (float significand 0.0d0) expt) sign))
+	   least-positive-double-float))
+(assert (= (multiple-value-bind (significand expt sign)
+	       (decode-float least-positive-double-float)
+	     (* (scale-float significand expt) sign))
+	   least-positive-double-float))
+(assert (= 0.0 (scale-float 1.0 most-negative-fixnum)))
+(assert (= 0.0d0 (scale-float 1.0d0 (1- most-negative-fixnum))))
+(assert (raises-error? (scale-float 1.0 most-positive-fixnum)
+		       floating-point-overflow))
+(assert (raises-error? (scale-float 1.0d0 (1+ most-positive-fixnum))
+		       floating-point-overflow))