--- loncom/homework/default_homework.lcpm	2000/10/11 20:59:43	1.3
+++ loncom/homework/default_homework.lcpm	2000/10/13 14:58:49	1.6
@@ -4,6 +4,36 @@
 #
 $RANDOMINIT=0;
 
+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 '';
+}
+
 sub hinton {
   return 0;
 }
@@ -21,8 +51,9 @@ sub acos { atan2(sqrt(1 - $_[0] * $_[0])
 sub asin { atan2($_[0], sqrt(1- $_[0] * $_[0]) );  }
 
 sub html {
-  if ( $external::target == "web" ) {
-    $SCRIPT_RESULT.=@_[0];
+  if ( $external::target eq "web" ) {
+    #$SCRIPT_RESULT.=@_[0];
+    return @_[0];
   }
 }
 
@@ -35,3 +66,32 @@ 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";