--- loncom/homework/default_homework.lcpm	2000/10/12 20:36:05	1.4
+++ loncom/homework/default_homework.lcpm	2000/10/25 22:02:53	1.7
@@ -4,6 +4,27 @@
 #
 $RANDOMINIT=0;
 
+sub caparesponse_check {
+  my $answer='';
+  my $type='';
+  my $tol_type='';
+  my $tolerance='';
+  my $sig_lbound='';
+  my $sig_ubound='';
+  my $ans_fmt='';
+  my $unit_str='';
+  my $calc='';
+  my ($response,$expr)=@_;
+  
+  ($answer,$type,$tol_type,$tolerance,$sig_lbound,$sig_ubound,$ans_fmt,
+   $unit_str,$calc) = eval $expr.'return $answer,$type,$tol_type,$tolerance,$sig_lbound,$sig_ubound,$ans_fmt,$unit_str,$calc';
+  my $result = &caparesponse_capa_check_answer($response,$answer,$type,
+					       $tol_type,$tolerance,
+					       $sig_lbound,$sig_ubound,
+					       $ans_fmt, $unit_str,$calc);
+  return ":$result:$response:$answer:";
+}
+
 sub tex {
   if ( $external::target eq "tex" ) {
     #$SCRIPT_RESULT.=@_[0];
@@ -66,3 +87,32 @@ sub format {
   my ($value,$fmt)=@_;
   $SCRIPT_RESULT.=sprintf('%.'.$fmt,$value);
 }
+
+sub map {
+  my $num = $#_/2;
+  my $i;
+  my @used;
+  my @permutation;
+  for ($i=0; $i < $num;) {
+    $rand = &random(1,$num,1);
+    if ( $used[$rand] == '0' ) {
+      $i++;
+      $used[$rand]='1';
+      $permutation[$i]=$rand;
+    }
+  }
+  for ( $i=1 ; $i<$num+1 ; $i++ ) {
+    ${$_[$permutation[$i]]}=$_[$i+$num]
+  }
+}
+
+sub choose {
+  my $num = $_[0];
+  return $_[$num];
+}
+#$external::randomseed=time;
+#$a=2;
+#$b=2;
+#$c=2;
+#&map(1,\$a,\$b,\$c,3,4,5);
+#print $a."\n".$b."\n";