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Date:      Thu, 25 Feb 2010 20:15:33 -0800 (PST)
From:      "Steven G. Kargl" <kargl@troutmask.apl.washington.edu>
To:        FreeBSD-gnats-submit@FreeBSD.org, freebsd-bugs@FreeBSD.org
Subject:   Re: bin/144306: Nasty bug in jn(3)
Message-ID:  <201002260415.o1Q4FXC6029992@troutmask.apl.washington.edu>
In-Reply-To: <201002260020.o1Q0K40O036894@freefall.freebsd.org>

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This patch fixes the problem.

Index: e_jn.c
===================================================================
--- e_jn.c	(revision 204219)
+++ e_jn.c	(working copy)
@@ -200,7 +200,12 @@
 			}
 	     	    }
 		}
-	    	b = (t*__ieee754_j0(x)/b);
+		z = __ieee754_j0(x);
+		w = __ieee754_j1(x);
+		if (fabs(z) >= fabs(w))
+	    		b = (t*z/b);
+		else
+			b = (t*w/a);		
 	    }
 	}
 	if(sgn==1) return -b; else return b;

-- 
Steve
http://troutmask.apl.washington.edu/~kargl/



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