In aliencomp.c #+(and ppc darwin) should be #!+(and ppc darwin), which

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

diff --git a/tests/float.pure.lisp b/tests/float.pure.lisp
index c957c9f..1a042e5 100644 (file)
--- a/tests/float.pure.lisp
+++ b/tests/float.pure.lisp
@@ -6,7 +6,7 @@
 ;;;; While most of SBCL is derived from the CMU CL system, the test
 ;;;; files (like this one) were written from scratch after the fork
 ;;;; from CMU CL.
-;;;; 
+;;;;
 ;;;; This software is in the public domain and is provided with
 ;;;; absolutely no warranty. See the COPYING and CREDITS files for
 ;;;; more information.
@@ -14,9 +14,9 @@
 (cl:in-package :cl-user)
 
 (dolist (ifnis (list (cons single-float-positive-infinity
-                          single-float-negative-infinity)
-                    (cons double-float-positive-infinity
-                          double-float-negative-infinity)))
+                           single-float-negative-infinity)
+                     (cons double-float-positive-infinity
+                           double-float-negative-infinity)))
   (destructuring-bind (+ifni . -ifni) ifnis
     (assert (= (* +ifni 1) +ifni))
     (assert (= (* +ifni -0.1) -ifni))
@@ -47,7 +47,7 @@
 ;;; (Peter Van Eynde's ansi-test suite caught this, and Eric Marsden
 ;;; reported a fix for CMU CL, which was ported to sbcl-0.6.12.35.)
 (assert (typep (nth-value 1 (ignore-errors (float-radix "notfloat")))
-              'type-error))
+               'type-error))
 
 (assert (typep (nth-value 1 (ignore-errors
                               (funcall (fdefinition 'float-radix) "notfloat")))
@@ -58,9 +58,95 @@
 (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))))
+
+(with-test (:name (:scale-float-overflow :bug-372)
+            :fails-on '(or :ppc :freebsd)) ;; 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))
+
+(with-test (:name (:addition-overflow :bug-372)
+            :fails-on '(or :ppc :mips :freebsd))
+  (assert (typep (nth-value
+                  1
+                  (ignore-errors
+                    (sb-sys:without-interrupts
+                     (loop repeat 2 summing most-positive-double-float)
+                     (sleep 2))))
+                 'floating-point-overflow)))
+
+;;; On x86-64 generating complex floats on the stack failed an aver in
+;;; the compiler if the stack slot was the same as the one containing
+;;; the real part of the complex. The following expression was able to
+;;; trigger this in 0.9.5.62.
+(with-test (:name :complex-float-stack)
+  (dolist (type '((complex double-float)
+                  (complex single-float)))
+    (compile nil
+             `(lambda (x0 x1 x2 x3 x4 x5 x6 x7)
+                (declare (type ,type x0 x1 x2 x3 x4 x5 x6 x7))
+                (let ((x0 (+ x0 x0))
+                      (x1 (+ x1 x1))
+                      (x2 (+ x2 x2))
+                      (x3 (+ x3 x3))
+                      (x4 (+ x4 x4))
+                      (x5 (+ x5 x5))
+                      (x6 (+ x6 x6))
+                      (x7 (+ x7 x7)))
+                  (* (+ x0 x1 x2 x3) (+ x4 x5 x6 x7)
+                     (+ x0 x2 x4 x6) (+ x1 x3 x5 x7)
+                     (+ x0 x3 x4 x7) (+ x1 x2 x5 x6)
+                     (+ x0 x1 x6 x7) (+ x2 x3 x4 x5)))))))