X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=tests%2Ffloat.pure.lisp;h=5612a73fbcbb99ab070931236babd78825e7c247;hb=260de2062fca170efdac3e42491d7d866c2d2e56;hp=cebcc4e1462ed0c2e050a8d6926b14ae9d8b1739;hpb=175c318c892b0627b36fa3c4db66f59680242204;p=sbcl.git

diff --git a/tests/float.pure.lisp b/tests/float.pure.lisp
index cebcc4e..5612a73 100644
--- a/tests/float.pure.lisp
+++ b/tests/float.pure.lisp
@@ -92,7 +92,8 @@
 (assert (= 0.0 (scale-float 1.0 most-negative-fixnum)))
 (assert (= 0.0d0 (scale-float 1.0d0 (1- most-negative-fixnum))))
 
-(with-test (:fails-on '(or :darwin)) ;; bug 372
+(with-test (:name (:scale-float-overflow :bug-372)
+            :fails-on '(and :darwin :ppc)) ;; bug 372
   (progn
     (assert (raises-error? (scale-float 1.0 most-positive-fixnum)
                            floating-point-overflow))
@@ -117,10 +118,276 @@
    #c(1.0d0 2.0d0))
     'double-float))
 
-(assert (typep (nth-value
-                1
-                (ignore-errors
-                  (sb-sys:without-interrupts
-                    (loop repeat 2 summing most-positive-double-float)
-                    (sleep 2))))
-               'floating-point-overflow))
+;;; More out of line functions (%COS, %SIN, %TAN) for constant folding,
+;;; reported by Mika Pihlajamäki
+(funcall (compile nil '(lambda () (cos (tan (round 0))))))
+(funcall (compile nil '(lambda () (sin (tan (round 0))))))
+(funcall (compile nil '(lambda () (tan (tan (round 0))))))
+
+(with-test (:name (:addition-overflow :bug-372)
+            :fails-on '(or (and :ppc :openbsd)
+                           (and :ppc :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)))
+
+;; This is the same test as above.  Even if the above copy passes,
+;; this copy will fail if SIGFPE handling ends up clearing the FPU
+;; control word, which can happen if the kernel clears the FPU control
+;; (a reasonable thing for it to do) and the runtime fails to
+;; compensate for this (see RESTORE_FP_CONTROL_WORD in interrupt.c).
+;; Note that this only works when running float.pure.lisp alone, as
+;; the preceeding "pure" test files aren't as free of side effects as
+;; we might like.
+(with-test (:name (:addition-overflow :bug-372 :take-2)
+            :fails-on '(or (and :ppc :openbsd)
+                           (and :ppc :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)))
+
+;;; 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)))))))
+
+
+(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))))))))
+
+;; 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."
+             ;; KLUDGE: SB-VM is locked, and non-x86oids don't have
+             ;; SB-VM::TOUCH-OBJECT.  Don't even READ this body on
+             ;; other platforms.
+             #-(or x86 x86-64)
+             (declare (ignore count type names body))
+             #+(or x86 x86-64)
+             (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)))))))
+
+(with-test (:name :round-to-bignum)
+  (assert (= (round 1073741822.3d0) 1073741822))
+  (assert (= (round 1073741822.5d0) 1073741822))
+  (assert (= (round 1073741822.7d0) 1073741823))
+  (assert (= (round 1073741823.3d0) 1073741823))
+  (assert (= (round 1073741823.5d0) 1073741824))
+  (assert (= (round 1073741823.7d0) 1073741824)))
+
+(with-test (:name :round-single-to-bignum)
+  (assert (= (round 1e14) 100000000376832))
+  (assert (= (round 1e19) 9999999980506447872)))
+
+(with-test (:name :scaled-%hypot)
+  (assert (<= (abs (complex most-positive-double-float 1d0))
+              (1+ most-positive-double-float))))