--- loncom/homework/default_homework.lcpm	2004/05/17 22:20:21	1.80
+++ loncom/homework/default_homework.lcpm	2004/05/18 23:12:15	1.81
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA 
 # used by lonxml::xmlparse() as input variable $safeinit to Apache::run::run()
 #
-# $Id: default_homework.lcpm,v 1.80 2004/05/17 22:20:21 albertel Exp $
+# $Id: default_homework.lcpm,v 1.81 2004/05/18 23:12:15 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -480,15 +480,21 @@ sub floor  {return (($_[0]-CORE::int($_[
 
 sub format {
     my ($value,$fmt)=@_;
-    my $dollarmode,$commamode;
-    if ($fmt =~ /^\$(.*)/) { $fmt=$1; $dollarmode=1; } 
-    if ($fmt =~ /^,(.*)/) { $fmt=$1; $commamode=1; } 
+    my ($dollarmode,$commamode,$alwaysperiod,$options);
+    if ($fmt =~ /^([^\d]*)(.*)/) { $options=$1; $fmt=$2; } 
+    #if ($options =~ /\$/) { $dollamode=1; }
+    #if ($options =~ /,/)  { $commamode=1; }
+    if ($options =~ /\./) {
+	$alwaysperiod=1;
+	&LONCAPA_INTERNAL_DEBUG("hrrm setting it to 1");
+    }
+    &LONCAPA_INTERNAL_DEBUG("alwyas per $alwaysperiod opt $options fmt $fmt");
     $fmt=~s/e/E/g;
     my $result=sprintf('%.'.$fmt,$value);
-    if ($fmt eq '0f') { $result .='.'; }
+    if ($alwaysperiod && $fmt eq '0f') { $result .='.'; }
     $result=~s/(E[+-]*)0/$1/;
-    if ($dollarmode) {$result=&dollarformat($result);}
-    if ($commamode) {$result=&commaformat($result);}
+    #if ($dollarmode) {$result=&dollarformat($result);}
+    #if ($commamode) {$result=&commaformat($result);}
     return $result;
 }
 
@@ -534,13 +540,21 @@ sub chemparse {
 sub prettyprint {
     my ($value,$fmt,$target)=@_;
     my $result;
-    my $dollarmode,$commamode;
     if (!$target) { $target = $external::target; }
     if ($fmt =~ /chem/i) { return(&chemparse($value)); }
-    if ($fmt =~ /^\$(.*)/) { $fmt=$1; $dollarmode=1; } 
-    if ($fmt =~ /^,(.*)/) { $fmt=$1; $commamode=1; } 
+    my ($dollarmode,$commamode,$alwaysperiod,$options);
+    if ($fmt =~ /^([^\d]*)(.*)/) { $options=$1; $fmt=$2; } 
+    if ($options =~ /\$/) { $dollamode=1; }
+    if ($options =~ /,/)  { $commamode=1; }
+    if ($options =~ /\./) { $alwaysperiod=1; }
     if ($fmt) { $value=sprintf('%.'.$fmt,$value); }
-    if ($fmt eq '0f') {	$value .='.'; }
+    if ($alwaysperiod && $fmt eq '0f') {
+	if ($target eq 'tex') {
+	    $value .='\\ensuremath{.}';
+	} else {
+	    $value .='.';
+	}
+    }
     if ($value =~ /([0-9\.\-\+]+)E([0-9\-\+]+)/i ) {
 	my $frac=$1;
 	if ($dollarmode) { $frac=&dollarformat($frac); }