[Maxima-commits] CVS: maxima/tests rtest14.mac,1.49,1.50

[David B. <bil...@us...>]

Update of /cvsroot/maxima/maxima/tests
In directory sc8-pr-cvs16.sourceforge.net:/tmp/cvs-serv20744/tests

Modified Files:
	rtest14.mac 
Log Message:
Fix for bug 1900843.  Sign of diff(bessel_k(n,x),x) is wrong.  This bug was 
introduced post maxima-5.14 and is not present in any release.

A&S 9.6.29 is not too clear for bessel_k. G&R 8.486.11 is clearer and 
agrees with this fix.

Also correct two testsuite cases.  


Index: rtest14.mac
===================================================================
RCS file: /cvsroot/maxima/maxima/tests/rtest14.mac,v
retrieving revision 1.49
retrieving revision 1.50
diff -u -d -r1.49 -r1.50
--- rtest14.mac	6 Feb 2008 15:40:53 -0000	1.49
+++ rtest14.mac	24 Feb 2008 13:51:05 -0000	1.50
@@ -30,9 +30,9 @@
 diff(bessel_i(1,x),x);
 (bessel_i(2,x)+bessel_i(0,x))/2;
 diff(bessel_k(0,x),x);
-bessel_k(1,x);
+-bessel_k(1,x);
 diff(bessel_k(1,x),x);
-(bessel_k(2,x)+bessel_k(0,x))/2;
+-((bessel_k(2,x)+bessel_k(0,x))/2);
 
 besselexpand:true;
 true$