--- loncom/homework/caparesponse/caparesponse.pm	2003/07/24 13:25:37	1.106
+++ loncom/homework/caparesponse/caparesponse.pm	2003/09/22 18:38:59	1.111
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # caparesponse definition
 #
-# $Id: caparesponse.pm,v 1.106 2003/07/24 13:25:37 sakharuk Exp $
+# $Id: caparesponse.pm,v 1.111 2003/09/22 18:38:59 sakharuk Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -194,6 +194,7 @@ sub end_numericalresponse {
 		}
 		my $formatted;
 		if ((defined($format)) && ($format ne '')) {
+		    $format=~s/e/E/g;
 		    &Apache::lonxml::debug("formatting with :$format: answer :$answer:");
 		    $formatted=sprintf('%.'.$format,$answer).',';
 		} else {
@@ -247,7 +248,7 @@ sub end_numericalresponse {
                            </textarea></font> <br /><br />';
 		}
 	    } elsif ($target eq 'tex') {
-		if (defined $unit and $Apache::lonhomework::type eq 'exam') {
+		if ((defined $unit) and ($unit=~/\S/) and ($Apache::lonhomework::type eq 'exam')) {
 		    $result.=' \textit{(in} \verb|'.$unit.'|\textit{)} ';
 		}
 		if ($$tagstack[-1] eq 'numericalresponse') {
@@ -366,7 +367,7 @@ sub end_numericalresponse {
 	    if ($target eq 'answer') {
 		if ($ENV{'form.answer_output_mode'} eq 'tex') {
 		    $result.=&Apache::response::answer_part($$tagstack[-1],
-							  "\\textbf{$string}");
+							  "$string");
 		} else {
 		    $result.=&Apache::response::answer_part($$tagstack[-1],
 							    "<b>$string</b>");
@@ -416,12 +417,13 @@ sub format_number {
     my ($number,$format,$target)=@_;
     my $ans;
     if ($format ne '') {
+	$format=~s/e/E/g;
 	$ans = sprintf('%.'.$format,$number);
     } else {
 	my $format = '';
 	#What is the number? (integer,decimal,floating point)
 	if ($number=~/^(\d*\.?\d*)(E|e)(\d*)$/) {
-	    $format = 'e'.$2;
+	    if (abs($3)>=100) {$format = 'e3';} else {$format = 'e2';}
 	} elsif ($number=~/^(\d*)\.(\d*)$/) {
 	    $format = '4f';
 	} elsif ($number=~/^(\d*)$/) {