X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=tests%2Ffloat.pure.lisp;h=7b9502c4000ce5684333acc4dd0ef8326ec164d5;hb=4c81c652cdc32faefee1bccb84c3c9a7854e3edd;hp=d06352cc3895e75af7d0a8b738244a4c94eafb7b;hpb=6349f899f37ca9807461e67cb5e2f8b8bd3beba6;p=sbcl.git

diff --git a/tests/float.pure.lisp b/tests/float.pure.lisp
index d06352c..7b9502c 100644
--- a/tests/float.pure.lisp
+++ b/tests/float.pure.lisp
@@ -93,7 +93,7 @@
 (assert (= 0.0d0 (scale-float 1.0d0 (1- most-negative-fixnum))))
 
 (with-test (:name (:scale-float-overflow :bug-372)
-            :fails-on '(or :ppc :darwin :freebsd)) ;; bug 372
+            :fails-on :darwin) ;; bug 372
   (progn
     (assert (raises-error? (scale-float 1.0 most-positive-fixnum)
                            floating-point-overflow))
@@ -125,11 +125,13 @@
 (funcall (compile nil '(lambda () (tan (tan (round 0))))))
 
 (with-test (:name (:addition-overflow :bug-372)
-            :fails-on '(or :ppc :darwin :mips :freebsd))
+            :fails-on '(or (and :ppc :openbsd) :darwin (and :x86 :netbsd)))
   (assert (typep (nth-value
                   1
                   (ignore-errors
                     (sb-sys:without-interrupts
+                     (sb-int:set-floating-point-modes :current-exceptions nil
+                                                      :accrued-exceptions nil)
                      (loop repeat 2 summing most-positive-double-float)
                      (sleep 2))))
                  'floating-point-overflow)))
@@ -156,3 +158,217 @@
                      (+ x0 x2 x4 x6) (+ x1 x3 x5 x7)
                      (+ x0 x3 x4 x7) (+ x1 x2 x5 x6)
                      (+ x0 x1 x6 x7) (+ x2 x3 x4 x5)))))))
+
+
+(with-test (:name :nan-comparisons
+            :fails-on '(or :sparc :mips))
+  (sb-int:with-float-traps-masked (:invalid)
+    (macrolet ((test (form)
+                 (let ((nform (subst '(/ 0.0 0.0) 'nan form)))
+                   `(progn
+                      (assert (eval ',nform))
+                      (assert (eval `(let ((nan (/ 0.0 0.0)))
+                                       ,',form)))
+                      (assert (funcall
+                               (compile nil `(lambda () ,',nform))))
+                      (assert (funcall
+                               (compile nil `(lambda (nan) ,',form))
+                               (/ 0.0 0.0)))))))
+      (test (/= nan nan))
+      (test (/= nan nan nan))
+      (test (/= 1.0 nan 2.0 nan))
+      (test (/= nan 1.0 2.0 nan))
+      (test (not (= nan 1.0)))
+      (test (not (= nan nan)))
+      (test (not (= nan nan nan)))
+      (test (not (= 1.0 nan)))
+      (test (not (= nan 1.0)))
+      (test (not (= 1.0 1.0 nan)))
+      (test (not (= 1.0 nan 1.0)))
+      (test (not (= nan 1.0 1.0)))
+      (test (not (>= nan nan)))
+      (test (not (>= nan 1.0)))
+      (test (not (>= 1.0 nan)))
+      (test (not (>= 1.0 nan 0.0)))
+      (test (not (>= 1.0 0.0 nan)))
+      (test (not (>= nan 1.0 0.0)))
+      (test (not (<= nan nan)))
+      (test (not (<= nan 1.0)))
+      (test (not (<= 1.0 nan)))
+      (test (not (<= 1.0 nan 2.0)))
+      (test (not (<= 1.0 2.0 nan)))
+      (test (not (<= nan 1.0 2.0)))
+      (test (not (< nan nan)))
+      (test (not (< -1.0 nan)))
+      (test (not (< nan 1.0)))
+      (test (not (> nan nan)))
+      (test (not (> -1.0 nan)))
+      (test (not (> nan 1.0))))))
+
+(with-test (:name :log-int/double-accuracy)
+  ;; we used to use single precision for intermediate results
+  (assert (eql 2567.6046442221327d0
+               (log (loop for n from 1 to 1000 for f = 1 then (* f n)
+                          finally (return f))
+                    10d0)))
+  ;; both ways
+  (assert (eql (log 123123123.0d0 10) (log 123123123 10.0d0))))
+
+(with-test (:name :log-base-zero-return-type)
+  (assert (eql 0.0f0 (log 123 (eval 0))))
+  (assert (eql 0.0d0 (log 123.0d0 (eval 0))))
+  (assert (eql 0.0d0 (log 123 (eval 0.0d0))))
+  (let ((f (compile nil '(lambda (x y)
+                          (declare (optimize speed))
+                          (etypecase x
+                            (single-float
+                             (etypecase y
+                               (single-float (log x y))
+                               (double-float (log x y))))
+                            (double-float
+                             (etypecase y
+                               (single-float (log x y))
+                               (double-float (log x y)))))))))
+    (assert (eql 0.0f0 (funcall f 123.0 0.0)))
+    (assert (eql 0.0d0 (funcall f 123.0d0 0.0)))
+    (assert (eql 0.0d0 (funcall f 123.0d0 0.0d0)))
+    (assert (eql 0.0d0 (funcall f 123.0 0.0d0)))))
+
+;; Bug reported by Eric Marsden on July 15 2009. The compiler
+;; used not to constant fold calls with arguments of type
+;; (EQL foo).
+(with-test (:name :eql-type-constant-fold)
+  (assert (equal '(FUNCTION (T) (VALUES (MEMBER T) &OPTIONAL))
+                 (sb-kernel:%simple-fun-type
+                  (compile nil `(lambda (x)
+                                  (eql #c(1.0 2.0)
+                                       (the (eql #c(1.0 2.0))
+                                         x))))))))
+
+;; This was previously x86-only, with note:
+;;   The x86 port used not to reduce the arguments of transcendentals
+;;   correctly. On other platforms, we trust libm to DTRT.
+;; but it doesn't cost any real amount to just test them all
+(with-test (:name :range-reduction)
+  (flet ((almost= (x y)
+           (< (abs (- x y)) 1d-5)))
+    (macrolet ((foo (op value)
+                 `(assert (almost= (,op (mod ,value (* 2 pi)))
+                                   (,op ,value)))))
+      (let ((big (* pi (expt 2d0 70)))
+            (mid (coerce most-positive-fixnum 'double-float))
+            (odd (* pi most-positive-fixnum)))
+        (foo sin big)
+        (foo sin mid)
+        (foo sin odd)
+        (foo sin (/ odd 2d0))
+
+        (foo cos big)
+        (foo cos mid)
+        (foo cos odd)
+        (foo cos (/ odd 2d0))
+
+        (foo tan big)
+        (foo tan mid)
+        (foo tan odd)))))
+
+;; Leakage from the host could result in wrong values for truncation.
+(with-test (:name :truncate)
+  (assert (plusp (sb-kernel:%unary-truncate/single-float (expt 2f0 33))))
+  (assert (plusp (sb-kernel:%unary-truncate/double-float (expt 2d0 33))))
+  ;; That'd be one strange host, but just in case
+  (assert (plusp (sb-kernel:%unary-truncate/single-float (expt 2f0 65))))
+  (assert (plusp (sb-kernel:%unary-truncate/double-float (expt 2d0 65)))))
+
+;; On x86-64, we sometimes forgot to clear the higher order bits of the
+;; destination register before using it with an instruction that doesn't
+;; clear the (unused) high order bits. Suspect instructions are operations
+;; with only one operand: for everything else, the destination has already
+;; been loaded with a value, making it safe (by induction).
+;;
+;; The tests are extremely brittle and could be broken by any number of
+;; back- or front-end optimisations. We should just keep the issue above
+;; in mind at all times when working with SSE or similar instruction sets.
+;;
+;; Run only on x86/x86-64m as no other platforms have SB-VM::TOUCH-OBJECT.
+(macrolet ((with-pinned-floats ((count type &rest names) &body body)
+             "Force COUNT float values to be kept live (and hopefully in registers),
+              fill a temporary register with noise, and execute BODY."
+             (let ((dummy (loop repeat count
+                                collect (or (pop names)
+                                            (gensym "TEMP")))))
+               `(let ,(loop for i downfrom -1
+                            for var in dummy
+                            for j = (coerce i type)
+                            collect
+                            `(,var ,(complex j j))) ; we don't actually need that, but
+                  (declare (type (complex ,type) ,@dummy)) ; future-proofing can't hurt
+                  ,@(loop for var in dummy
+                          for i upfrom 0
+                          collect `(setf ,var ,(complex i (coerce i type))))
+                  (multiple-value-prog1
+                      (progn
+                        (let ((x ,(complex 1d0 1d0)))
+                          (declare (type (complex double-float) x))
+                          (setf x ,(complex most-positive-fixnum (float most-positive-fixnum 1d0)))
+                          (sb-vm::touch-object x))
+                        (locally ,@body))
+                    ,@(loop for var in dummy
+                            collect `(sb-vm::touch-object ,var)))))))
+  (with-test (:name :clear-sqrtsd :skipped-on '(not (or :x86 :x86-64)))
+    (flet ((test-sqrtsd (float)
+             (declare (optimize speed (safety 1))
+                      (type (double-float (0d0)) float))
+             (with-pinned-floats (14 double-float x0)
+               (let ((x (sqrt float)))
+                 (values (+ x x0) float)))))
+      (declare (notinline test-sqrtsd))
+      (assert (zerop (imagpart (test-sqrtsd 4d0))))))
+
+  (with-test (:name :clear-sqrtsd-single :skipped-on '(not (or :x86 :x86-64)))
+    (flet ((test-sqrtsd-float (float)
+             (declare (optimize speed (safety 1))
+                      (type (single-float (0f0)) float))
+             (with-pinned-floats (14 single-float x0)
+               (let ((x (sqrt float)))
+                 (values (+ x x0) float)))))
+      (declare (notinline test-sqrtsd-float))
+      (assert (zerop (imagpart (test-sqrtsd-float 4f0))))))
+
+  (with-test (:name :clear-cvtss2sd :skipped-on '(not (or :x86 :x86-64)))
+    (flet ((test-cvtss2sd (float)
+             (declare (optimize speed (safety 1))
+                      (type single-float float))
+             (with-pinned-floats (14 double-float x0)
+               (let ((x (float float 0d0)))
+                 (values (+ x x0) (+ 1e0 float))))))
+      (declare (notinline test-cvtss2sd))
+      (assert (zerop (imagpart (test-cvtss2sd 1f0))))))
+
+  (with-test (:name :clear-cvtsd2ss :skipped-on '(not (or :x86 :x86-64)))
+    (flet ((test-cvtsd2ss (float)
+             (declare (optimize speed (safety 1))
+                      (type double-float float))
+             (with-pinned-floats (14 single-float x0)
+               (let ((x (float float 1e0)))
+                 (values (+ x x0) (+ 1d0 float))))))
+      (declare (notinline test-cvtsd2ss))
+      (assert (zerop (imagpart (test-cvtsd2ss 4d0))))))
+
+  (with-test (:name :clear-cvtsi2sd :skipped-on '(not (or :x86 :x86-64)))
+    (flet ((test-cvtsi2sd (int)
+             (declare (optimize speed (safety 0))
+                      (type (unsigned-byte 10) int))
+             (with-pinned-floats (15 double-float x0)
+               (+ (float int 0d0) x0))))
+      (declare (notinline test-cvtsi2sd))
+      (assert (zerop (imagpart (test-cvtsi2sd 4))))))
+
+  (with-test (:name :clear-cvtsi2ss :skipped-on '(not (or :x86 :x86-64)))
+    (flet ((test-cvtsi2ss (int)
+             (declare (optimize speed (safety 0))
+                      (type (unsigned-byte 10) int))
+             (with-pinned-floats (15 single-float x0)
+               (+ (float int 0e0) x0))))
+      (declare (notinline test-cvtsi2ss))
+      (assert (zerop (imagpart (test-cvtsi2ss 4)))))))