[cmucl-commit] [git] CMU Common Lisp branch master updated. snapshot-2014-09-26-g6f1c1c5

[Raymond Toy]

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- Log -----------------------------------------------------------------
commit 6f1c1c59b5e719143012ac7b217458953f2a0bed
Author: Raymond Toy <toy.raymond at gmail.com>
Date:   Tue Sep 30 21:12:52 2014 -0700

    Add tests for kernel:%scalbn.

diff --git a/tests/trig.lisp b/tests/trig.lisp
index cdebe39..86fdb39 100644
--- a/tests/trig.lisp
+++ b/tests/trig.lisp
@@ -1027,3 +1027,32 @@
 		  (kernel:%log10 -0d0)))
   (kernel::with-float-traps-masked (:invalid)
     (assert-true (ext:float-nan-p (kernel:%log10 -1d0)))))
+
+(define-test %scalbn.exceptions
+  (:tag :fdlibm)
+  (let ((modes (ext:get-floating-point-modes)))
+    (unwind-protect
+	 (progn
+	   (ext:set-floating-point-modes :traps '(:underflow))
+	   (assert-error 'floating-point-underflow
+			 (kernel:%scalbn 1d0 -51000)))
+      (apply #'ext:set-floating-point-modes modes)))
+  (assert-true 0d0
+	       (kernel:%scalbn 1d0 -51000))
+  (assert-true -0d0
+	       (kernel:%scalbn -1d0 -51000))
+  (assert-error 'floating-point-overflow
+		(kernel:%scalbn ext:double-float-positive-infinity 1))
+  (assert-error 'floating-point-invalid-operation
+		(kernel:%scalbn *snan* 1))
+  (assert-error 'floating-point-overflow
+		(kernel:%scalbn most-positive-double-float 2))
+  (assert-error 'floating-point-overflow
+		(kernel:%scalbn most-negative-double-float 2))
+  (kernel::with-float-traps-masked (:overflow)
+    (assert-equal ext:double-float-positive-infinity
+		  (kernel:%scalbn ext:double-float-positive-infinity 1))
+    (assert-equal ext:double-float-positive-infinity
+		  (kernel:%scalbn most-positive-double-float 2))
+    (assert-equal ext:double-float-negative-infinity
+		  (kernel:%scalbn most-negative-double-float 2))))

commit 098f3c14711de24cfeb3ce6a74bca320fd8e2aa1
Author: Raymond Toy <toy.raymond at gmail.com>
Date:   Tue Sep 30 21:12:37 2014 -0700

    Add alien interface to scalbn.

diff --git a/src/code/irrat.lisp b/src/code/irrat.lisp
index c07e979..8ddd413 100644
--- a/src/code/irrat.lisp
+++ b/src/code/irrat.lisp
@@ -91,6 +91,12 @@
 (def-math-rtn ("fdlibm_log1p" %log1p) 1)
 (def-math-rtn ("fdlibm_expm1" %expm1) 1)
 
+(declaim (inline %scalbn))
+(export '%scalbn)
+(alien:def-alien-routine ("fdlibm_scalbn" %scalbn) c-call:double
+  (x double-float)
+  (n c-call:int))
+
 ;; These are needed for use by byte-compiled files.  But don't use
 ;; these with sse2 since we don't support using the x87 instructions
 ;; here.

-----------------------------------------------------------------------

Summary of changes:
 src/code/irrat.lisp |    6 ++++++
 tests/trig.lisp     |   29 +++++++++++++++++++++++++++++
 2 files changed, 35 insertions(+)


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