0.9.2.28: infinite error protection

[sbcl.git] / tests / float.pure.lisp

diff --git a/tests/float.pure.lisp b/tests/float.pure.lisp
index 5195bbb..03b3cf9 100644 (file)
--- a/tests/float.pure.lisp
+++ b/tests/float.pure.lisp
@@ -58,13 +58,6 @@
 (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))
@@ -73,3 +66,52 @@
   (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))))
+#-(or 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)))
+
+;;; bug found by jsnell when nfroyd tried to implement better LOGAND
+;;; type derivation.
+(assert (= (integer-decode-float (coerce -1756510900000000000
+                                         'single-float))
+           12780299))
+
+;;; MISC.564: no out-of-line %ATAN2 for constant folding
+(assert (typep
+  (funcall
+   (compile
+    nil
+    '(lambda (p1)
+      (declare (optimize (speed 3) (safety 2) (debug 3) (space 0))
+       (type complex p1))
+      (phase (the (eql #c(1.0d0 2.0d0)) p1))))
+   #c(1.0d0 2.0d0))
+    'double-float))