[WWcvs] pg: Fixed problem with recognizing MINF in NUM_CMP.

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

Log Message:
-----------
Fixed problem with recognizing MINF in NUM_CMP.

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

Revision Data
-------------
Index: PGanswermacros.pl
===================================================================
RCS file: /webwork/cvs/system/pg/macros/PGanswermacros.pl,v
retrieving revision 1.36
retrieving revision 1.37
diff -Lmacros/PGanswermacros.pl -Lmacros/PGanswermacros.pl -u -r1.36 -r1.37
--- macros/PGanswermacros.pl
+++ macros/PGanswermacros.pl
@@ -1078,7 +1078,8 @@
 	#
 	if ($num_params{strings}) {
 	  foreach my $string (@{$num_params{strings}}) {
-	    my %tex = ($string =~ m/(-?)inf(inity)?/i)? (TeX => "$1\\infty"): ();
+	    my %tex = ($string =~ m/^(-?)inf(inity)?$/i)? (TeX => "$1\\infty"): ();
+	    %tex = (TeX => "-\\infty") if uc($string) eq "MINF";
 	    $context->strings->add(uc($string) => {%tex});
 	  }
 	}