[WWcvs] pg: Corrected interpretation of 0 a/b (thanks to Adam Weyhaupt)

[dpvc v. a. <we...@ma...>]

Log Message:
-----------
Corrected interpretation of 0 a/b (thanks to Adam Weyhaupt)

Modified Files:
--------------
    pg/macros:
        contextFraction.pl

Revision Data
-------------
Index: contextFraction.pl
===================================================================
RCS file: /webwork/cvs/system/pg/macros/contextFraction.pl,v
retrieving revision 1.10
retrieving revision 1.11
diff -Lmacros/contextFraction.pl -Lmacros/contextFraction.pl -u -r1.10 -r1.11
--- macros/contextFraction.pl
+++ macros/contextFraction.pl
@@ -404,7 +404,7 @@
 #
 sub _eval {
   my ($self,$a,$b)= @_;
-  return ($a > 0 ? $a + $b : $a - $b);
+  return ($a >= 0 ? $a + $b : $a - $b);
 }
 
 #