[git] CMU Common Lisp branch master updated. snapshot-2014-08-28-g63929ee

[Raymond Toy]

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- Log -----------------------------------------------------------------
commit 63929ee776996a45c97444ffe807316ae6187e3c
Author: Raymond Toy <toy.raymond at gmail.com>
Date:   Sat Aug 23 08:22:58 2014 -0700

    Make atanh signal errors using fdlibm_setexception.
    
     * src/lisp/e_atanh.c
       * Use fdlibm_setexception
     * tests/trig.lisp:
       * Add tests for atanh

diff --git a/src/lisp/e_atanh.c b/src/lisp/e_atanh.c
index 3588436..aed70d4 100644
--- a/src/lisp/e_atanh.c
+++ b/src/lisp/e_atanh.c
@@ -57,10 +57,11 @@ static double zero = 0.0;
 	lx = ux.i[LOWORD];		/* low word */
 	ix = hx&0x7fffffff;
 	if ((ix|((lx|(-lx))>>31))>0x3ff00000) /* |x|>1 */
-	    return (x-x)/(x-x);
-	if(ix==0x3ff00000) 
-	    return x/zero;
-	if(ix<0x3e300000&&(huge+x)>zero) return x;	/* x<2**-28 */
+          return fdlibm_setexception(x, FDLIBM_INVALID);
+        if(ix==0x3ff00000) 
+          return fdlibm_setexception(x, FDLIBM_DIVIDE_BY_ZERO);
+        
+        if(ix<0x3e300000&&(huge+x)>zero) return x;	/* x<2**-28 */
         ux.d = x;
 	ux.i[HIWORD] = ix;		/* x <- |x| */
         x = ux.d;
diff --git a/tests/trig.lisp b/tests/trig.lisp
index d95db71..1b6102d 100644
--- a/tests/trig.lisp
+++ b/tests/trig.lisp
@@ -888,6 +888,26 @@
   (kernel::with-float-traps-masked (:invalid)
     (assert-true (ext:float-nan-p (kernel:%asinh *snan*)))))
 
+(define-test atanh.exceptions
+  (:tag :fdlibm)
+  (assert-error 'floating-point-invalid-operation
+		(kernel:%atanh 2d0))
+  (assert-error 'floating-point-invalid-operation
+		(kernel:%atanh -2d0))
+  (assert-error 'division-by-zero
+		(kernel:%atanh 1d0))
+  (assert-error 'division-by-zero
+		(kernel:%atanh -1d0))
+  (kernel::with-float-traps-masked (:invalid)
+    (assert-true (ext:float-nan-p (kernel:%atanh 2d0)))
+    (assert-true (ext:float-nan-p (kernel:%atanh -2d0))))
+  (kernel::with-float-traps-masked (:divide-by-zero)
+    (assert-equal ext:double-float-positive-infinity
+		  (kernel:%atanh 1d0))
+    (assert-equal ext:double-float-negative-infinity
+		  (kernel:%atanh -1d0))))
+    
+
 (define-test expm1.exceptions
   (:tag :fdlibm)
   (assert-error 'floating-point-overflow

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

Summary of changes:
 src/lisp/e_atanh.c |    9 +++++----
 tests/trig.lisp    |   20 ++++++++++++++++++++
 2 files changed, 25 insertions(+), 4 deletions(-)


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