X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=tests%2Ffloat.pure.lisp;h=be2a6073790023a5713003ddd28a24c58c88a156;hb=079ef9dad558ca07cb8178ef428bf738112174fa;hp=d287b4aa9d5d8928951e06c574daa8141190703b;hpb=ebc5e12a9792f2e53cf5561c249236dae4501ef4;p=sbcl.git

diff --git a/tests/float.pure.lisp b/tests/float.pure.lisp
index d287b4a..be2a607 100644
--- a/tests/float.pure.lisp
+++ b/tests/float.pure.lisp
@@ -52,3 +52,48 @@
 (assert (typep (nth-value 1 (ignore-errors
                               (funcall (fdefinition 'float-radix) "notfloat")))
                'type-error))
+
+;;; Before 0.8.2.14 the cross compiler failed to work with
+;;; denormalized numbers
+(when (subtypep 'single-float 'short-float)
+  (assert (eql least-positive-single-float least-positive-short-float)))
+
+;;; 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))))
+#-darwin ;; bug 372
+(progn
+  (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)))