[git] CMU Common Lisp branch master updated. snapshot-2014-08-21-g3309732

[Raymond Toy]

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- Log -----------------------------------------------------------------
commit 33097329493c7a767bcc4434f3212badcb33236a
Author: Raymond Toy <toy.raymond at gmail.com>
Date:   Thu Aug 21 21:51:13 2014 -0700

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

diff --git a/src/lisp/e_exp.c b/src/lisp/e_exp.c
index 8b7ff6d..034c590 100644
--- a/src/lisp/e_exp.c
+++ b/src/lisp/e_exp.c
@@ -130,12 +130,19 @@ P5   =  4.13813679705723846039e-08; /* 0x3E663769, 0x72BEA4D0 */
     /* filter out non-finite argument */
 	if(hx >= 0x40862E42) {			/* if |x|>=709.78... */
             if(hx>=0x7ff00000) {
-		if(((hx&0xfffff)|ux.i[LOWORD])!=0) 
-		     return x+x; 		/* NaN */
-		else return (xsb==0)? x:0.0;	/* exp(+-inf)={inf,0} */
+		if(((hx&0xfffff)|ux.i[LOWORD])!=0) {
+                    /* NaN */
+                    return fdlibm_setexception(x, FDLIBM_INVALID);
+                } else {
+                    return (xsb==0)? x:0.0;	/* exp(+-inf)={inf,0} */
+                }
 	    }
-	    if(x > o_threshold) return huge*huge; /* overflow */
-	    if(x < u_threshold) return twom1000*twom1000; /* underflow */
+	    if(x > o_threshold) {
+                 /* overflow */
+                return fdlibm_setexception(x, FDLIBM_OVERFLOW);
+            }
+            
+	    if(x < u_threshold) return x; /* underflow */
 	}
 
     /* argument reduction */
diff --git a/tests/trig.lisp b/tests/trig.lisp
index 2f4a945..5001375 100644
--- a/tests/trig.lisp
+++ b/tests/trig.lisp
@@ -899,3 +899,16 @@
 		  (kernel:%log1p -1d0)))
   (kernel::with-float-traps-masked (:invalid)
     (assert-true (ext:float-nan-p (kernel:%log1p *snan*)))))
+
+(define-test exp.exceptions
+  (:tag :fdlibm)
+  (assert-error 'floating-point-overflow
+		(kernel:%exp 710d0))
+  (assert-true (ext:float-nan-p (kernel:%exp *qnan*)))
+  (assert-error 'floating-point-invalid-operation
+		(kernel:%exp *snan*))
+  (assert-equal ext:double-float-positive-infinity
+		(kernel:%exp ext:double-float-positive-infinity))
+  (kernel::with-float-traps-masked (:overflow)
+    (assert-equal ext:double-float-positive-infinity
+		  (kernel:%exp 710d0))))
\ No newline at end of file

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

Summary of changes:
 src/lisp/e_exp.c |   17 ++++++++++++-----
 tests/trig.lisp  |   13 +++++++++++++
 2 files changed, 25 insertions(+), 5 deletions(-)


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