--- loncom/homework/default_homework.lcpm	2000/11/21 18:36:37	1.10
+++ loncom/homework/default_homework.lcpm	2001/01/24 17:01:49	1.16
@@ -2,13 +2,16 @@
 # used by lonxml::xmlparse() as input variable $safeinit to Apache::run::run()
 # 
 #
+#init some globals
 $RANDOMINIT=0;
+$pi=atan2(1,1)*4;
 
 sub caparesponse_check {
   my $answer='';  #done
   my $type='';    #done
   my $tol_type=''; # gets it's value from whether tol has a % or not done
   my $tol='';     #done
+  my $sig='';
   my $sig_lbound='';
   my $sig_ubound='';
   my $ans_fmt='';
@@ -16,9 +19,8 @@ sub caparesponse_check {
   my $calc='';
   my ($response,$expr)=@_;
   
-  ($answer,$type,$tol,$sig_lbound,$sig_ubound,$ans_fmt,
-   $units,$calc) = eval $expr.'return $answer,$type,$tol,$sig_lbound,$sig_ubound,$ans_fmt,$units,$calc';
-
+  ($answer,$type,$tol,$sig,$ans_fmt,
+   $units,$calc) = eval $expr.';return $answer,$type,$tol,$sig,$ans_fmt,$units,$calc';
   #type's definitons come from capaParser.h
   if ($type eq '' ) {
     if ( $answer eq ($answer *1.0)) { $type = 2;
@@ -37,16 +39,23 @@ sub caparesponse_check {
     $tol_type=1; #TOL_ABSOLUTE
   } else {
     if ($tol =~ /%$/) {
-      $tol=chop($tol);
+      chop $tol;
       $tol_type=2; #TOL_PERCENTAGE
     } else {
       $tol_type=1; #TOL_ABSOLUTE
     }
   }
+
+  if ($sig eq '') {
+    $sig_lbound = 0; #SIG_LB_DEFAULT
+    $sig_ubound =15; #SIG_UB_DEFAULT
+  } else {
+    ($sig_lbound,$sig_ubound) = split /,/,$sig;
+  }
   my $result = &caparesponse_capa_check_answer($response,$answer,$type,
 					       $tol_type,$tol,
 					       $sig_lbound,$sig_ubound,
-					       $ans_fmt, $units,$calc);
+					       $ans_fmt,$units,$calc);
 
   if    ($result == '1') { $result='EXACT_ANS'; } 
   elsif ($result == '2') { $result='APPROX_ANS'; }
@@ -60,39 +69,62 @@ sub caparesponse_check {
   elsif ($result =='10') { $result='SUB_RECORDED'; }
   elsif ($result =='11') { $result='BAD_FORMULA'; }
   elsif ($result =='12') { $result='WANTED_NUMERIC'; }
-  else  {$result = "ERROR: Unknown Result: $result";}
+  else  {$result = "ERROR: Unknown Result:$result:$@:";}
 
-  return "$result:$tol:$tol_type";
+  return "$result:<br>Error $error:<br>Answer $answer:<br>Response $response:<br>$type|$tol|$tol_type|$sig:$sig_lbound:$sig_ubound|$units<br>";
+}
+
+sub caparesponse_check_list {
+  my ($response,$expr)=@_;
+  my $result='';
+  my $aresult='';
+  my $current_answer;
+  my $answer = eval $expr.';return $answer';
+  my (@list) = eval $answer;
+  my (@responselist)=split /,/,$response;
+  my $unit='';
+  $result.="Final response :$responselist['-1']:<br>";
+  if ( $responselist['-1']=~ /(.*[^\s])\s+([^\s]+)/ ) {
+    $responselist['-1']=$1;
+    $unit=$2;
+  }
+  $result.="Final response :$responselist['-1']:<br>";
+  $unit=~s/\s//;
+  my $i=0;
+  my $awards='';
+  for ($i=0; $i<@list;$i++) {
+    $aresult=&caparesponse_check($responselist[$i]." $unit",
+				 $expr.';my $answer='.$list[$i].';');
+    my ($temp)=split /:/, $aresult;
+    $awards.="$temp,";
+    $result.=$aresult;
+  }
+  chop $awards;
+  return "$awards:<br>$result";
 }
 
 sub tex {
   if ( $external::target eq "tex" ) {
-    #$SCRIPT_RESULT.=@_[0];
     return @_[0];
   } else {
-    #$SCRIPT_RESULT.=@_[1];
     return @_[1];
   }
 }
 
 sub web {
   if ( $external::target eq "tex" ) {
-    #$SCRIPT_RESULT.=@_[1];
     return @_[1];
   } else {
     if ( $external::target eq "web") {
-      #$SCRIPT_RESULT.=@_[0];
       return @_[0];
     } else {
-      #$SCRIPT_RESULT.=@_[2];
       return @_[2];
     }
   }
 }
 
 sub problem {
-  $SCRIPT_RESULT.='1';
-  return '';
+  return '1';
 }
 
 sub hinton {
@@ -113,7 +145,6 @@ sub asin { atan2($_[0], sqrt(1- $_[0] *
 
 sub html {
   if ( $external::target eq "web" ) {
-    #$SCRIPT_RESULT.=@_[0];
     return @_[0];
   }
 }
@@ -125,8 +156,7 @@ sub floor {return int($_[0]);  }
 
 sub format {
   my ($value,$fmt)=@_;
-  $SCRIPT_RESULT.=sprintf('%.'.$fmt,$value);
-  return $SCRIPT_RESULT;
+  return sprintf('%.'.$fmt,$value);
 }
 
 sub map {