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Diff for /loncom/homework/default_homework.lcpm between versions 1.32 and 1.41

version 1.32, 2001/07/23 22:40:59 version 1.41, 2001/12/04 14:48:35
Line 7 Line 7
 # 05/31/2001 H. K. Ng  # 05/31/2001 H. K. Ng
 #  #
 #init some globals  #init some globals
 $RANDOMINIT=0;  $hidden::RANDOMINIT=0;
 $pi=atan2(1,1)*4;  $pi=atan2(1,1)*4;
 $rad2deg=180.0/$pi;  $rad2deg=180.0/$pi;
 $deg2rad=$pi/180.0;  $deg2rad=$pi/180.0;
   
 sub caparesponse_check {  sub caparesponse_check {
   my $answer='';  #done    #not properly used yet: calc
   my $type='';    #done    #not to be used: $ans_fmt
     my ($answer,$type,$tol,$sig,$ans_fmt,$unit,$calc,$samples) =
       eval $_[1].
         ';return ($answer,$type,$tol,$sig,$ans_fmt,$unit,$calc,$samples);';
   
   my $tol_type=''; # gets it's value from whether tol has a % or not done    my $tol_type=''; # gets it's value from whether tol has a % or not done
   my $tol='';     #done  
   my $sig='';     #done lowerbnd,upperbnd  
   my $sig_lbound=''; #done    my $sig_lbound=''; #done
   my $sig_ubound=''; #done    my $sig_ubound=''; #done
   my $ans_fmt='';  
   my $unit='';     #done  
   my $calc='';  
   my ($response,$expr)=@_;    my ($response,$expr)=@_;
   
   
   ($answer,$type,$tol,$sig,$ans_fmt,  
    $unit,$calc) = eval $expr.';return ($answer,$type,$tol,$sig,$ans_fmt,$unit,$calc);';  
   #type's definitons come from capaParser.h    #type's definitons come from capaParser.h
   my $message='';    my $message='';
   #remove leading and trailing whitespace    #remove leading and trailing whitespace
Line 48  sub caparesponse_check { Line 45  sub caparesponse_check {
     } elsif ($type eq 'mc')    { $type = 5;      } elsif ($type eq 'mc')    { $type = 5;
     } elsif ($type eq 'fml')   { $type = 8;      } elsif ($type eq 'fml')   { $type = 8;
     } elsif ($type eq 'subj')  { $type = 7;      } elsif ($type eq 'subj')  { $type = 7;
       } elsif ($type eq 'float') { $type = 2;
       } elsif ($type eq 'int')   { $type = 1;
     } else { return "ERROR: Unknown type of answer: $type" }      } else { return "ERROR: Unknown type of answer: $type" }
   }    }
   
     my $points;
     my $id_list;
     #formula type setup the sample points
     if ($type eq '8') {
       ($id_list,$points)=split(/@/,$samples);
       $message.="Found :$points: points<br />";
     }
   if ($tol eq '') {    if ($tol eq '') {
     $tol=0.0;      $tol=0.0;
     $tol_type=1; #TOL_ABSOLUTE      $tol_type=1; #TOL_ABSOLUTE
Line 72  sub caparesponse_check { Line 78  sub caparesponse_check {
   my $result = &caparesponse_capa_check_answer($response,$answer,$type,    my $result = &caparesponse_capa_check_answer($response,$answer,$type,
        $tol_type,$tol,         $tol_type,$tol,
        $sig_lbound,$sig_ubound,         $sig_lbound,$sig_ubound,
        $ans_fmt,$unit,$calc);         $ans_fmt,$unit,$calc,$id_list,
          $points,$external::randomseed);
   
   if    ($result == '1') { $result='EXACT_ANS'; }     if    ($result == '1') { $result='EXACT_ANS'; } 
   elsif ($result == '2') { $result='APPROX_ANS'; }    elsif ($result == '2') { $result='APPROX_ANS'; }
Line 88  sub caparesponse_check { Line 95  sub caparesponse_check {
   elsif ($result =='12') { $result='WANTED_NUMERIC'; }    elsif ($result =='12') { $result='WANTED_NUMERIC'; }
   else  {$result = "ERROR: Unknown Result:$result:$@:";}    else  {$result = "ERROR: Unknown Result:$result:$@:";}
   
   return "$result:<br />Error $error:<br />Answer $answer:<br />Response $response:<br /> type-$type|$tol|$tol_type|$sig:$sig_lbound:$sig_ubound|$units<br />$message$expr";    return "$result:<br />Error $error:<br />Answer $answer:<br />Response $response:<br /> type-$type|$tol|$tol_type|$sig:$sig_lbound:$sig_ubound|$unit|<br />$message$expr";
 }  }
   
 sub caparesponse_check_list {  sub get_array_args {
   my ($response,$expr)=@_;    my ($expr,$arg)=@_;
   # do these first, because who knows what varname the instructor might have used    # do these first, because who knows what varname the instructor might have used
   # but it probably isn't $CAPARESPONSE_CHECK_LIST_answer    # but it probably isn't $CAPARESPONSE_CHECK_LIST_answer
   my $CAPARESPONSE_CHECK_LIST_answer = eval $expr.';return $answer';    my $CAPARESPONSE_CHECK_LIST_answer = eval $expr.';return $'.$arg; #'
   my (@list) = eval $CAPARESPONSE_CHECK_LIST_answer;    my $GET_ARRAY_ARGS_result;
   my $result='';    my @GET_ARRAY_ARGS_list;
   $result.="error:$@:<br />";    if ($CAPARESPONSE_CHECK_LIST_answer =~ /^\s*[\$\@]/) {
       (@GET_ARRAY_ARGS_list) = eval $CAPARESPONSE_CHECK_LIST_answer;
     }
     $GET_ARRAY_ARGS_result.="error:$@:<br />";
   # if the eval fails just use what is in the answer exactly    # if the eval fails just use what is in the answer exactly
   if (!defined(@list) || !defined($list[0])) {    if (!defined(@GET_ARRAY_ARGS_list) || !defined($GET_ARRAY_ARGS_list[0])) {
     $result.="list zero is undefined<br />";      $GET_ARRAY_ARGS_result.="list zero is undefined<br />";
     $list[0]=$CAPARESPONSE_CHECK_LIST_answer;      $GET_ARRAY_ARGS_list[0]=$CAPARESPONSE_CHECK_LIST_answer;
   }    }
     return $GET_ARRAY_ARGS_result,@GET_ARRAY_ARGS_list;
   }
   
   sub caparesponse_check_list {
     my ($response,$expr)=@_;
     my $result;
     my ($result,@list) = &get_array_args($expr,'answer');
   my $aresult='';    my $aresult='';
   my $current_answer;    my $current_answer;
   $result.="Got response :$CAPARESPONSE_CHECK_LIST_answer:$list[0]:<br />";    my $answers=join(':',@list);
     $result.="Got response :$answers:<br />";
   my @responselist;    my @responselist;
   my $type =eval $expr.';return $answer;';    my $type =eval $expr.';return $answer;';
   if ($type ne '' && $#list > 0) {    if ($type ne '' && $#list > 0) {
Line 189  sub hinton { Line 207  sub hinton {
   
 sub random {  sub random {
   my ($start,$end,$step)=@_;    my ($start,$end,$step)=@_;
   if ( ! $RANDOMINIT ) { srand($external::randomseed); $RANDOMINIT=1; }    if ( ! $hidden::RANDOMINIT ) {
       srand($external::randomseed);
       $hidden::RANDOMINIT=1;
     }
   my $num=1+int(($end-$start)/$step);    my $num=1+int(($end-$start)/$step);
   my $result=$start + int(rand() * $num)*$step;    my $result=$start + int(rand() * $num)*$step;
   return $result;    return $result;
Line 268  sub random_noncentral_f { Line 289  sub random_noncentral_f {
 }  }
   
 sub random_multivariate_normal {  sub random_multivariate_normal {
   my ($item_cnt,$seed,@mean) = @_;    my ($item_cnt,$seed,$mean,$covar) = @_;
   return "Number of deviates must be greater than 0" if $item_cnt <= 0;  
   my (@covar,@retArray);  
   my $ind = 0;  
   while ($ind<$item_cnt) {  
      push @covar, pop (@mean);  
      $ind++;  
   }  
   &random_set_seed_from_phrase($seed);    &random_set_seed_from_phrase($seed);
   @retArray=&math_random_multivariate_normal($item_cnt,@mean,@covar);    @retArray=&math_random_multivariate_normal($item_cnt,@$mean,@$covar);
   return @retArray;    return @retArray;
 }  }
   
Removed from v.1.32  
changed lines
  Added in v.1.41

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