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Diff for /loncom/homework/default_homework.lcpm between versions 1.31 and 1.46

version 1.31, 2001/07/19 21:26:22 version 1.46, 2002/02/06 16:18:26
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 # file name (temp): default_homework  # The LearningOnline Network with CAPA 
 # used by lonxml::xmlparse() as input variable $safeinit to Apache::run::run()  # used by lonxml::xmlparse() as input variable $safeinit to Apache::run::run()
 #  #
   # $Id$
   #
   # Copyright Michigan State University Board of Trustees
   #
   # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
   #
   # LON-CAPA is free software; you can redistribute it and/or modify
   # it under the terms of the GNU General Public License as published by
   # the Free Software Foundation; either version 2 of the License, or
   # (at your option) any later version.
   #
   # LON-CAPA is distributed in the hope that it will be useful,
   # but WITHOUT ANY WARRANTY; without even the implied warranty of
   # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   # GNU General Public License for more details.
   #
   # You should have received a copy of the GNU General Public License
   # along with LON-CAPA; if not, write to the Free Software
   # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   #
   # /home/httpd/html/adm/gpl.txt
   #
   # http://www.lon-capa.org/
   #
   #
 # Guy Albertelli  # Guy Albertelli
 #  #
 # 05/25/2001 H. K. Ng  # 05/25/2001 H. K. Ng
 # 05/31/2001 H. K. Ng  # 05/31/2001 H. K. Ng
   # 12/21/2001 Matthew
 #  #
 #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 $message='';
     #remove leading and trailing whitespace
     if ($response=~ /^\s|\s$/) {
       $response=~ s:^\s+|\s+$::g;
       $message .="Removed ws now :$response:<br />";
     } else {
       $message .="no ws in :$response:<br />";
     }
   
   if ($type eq '' ) {    if ($type eq '' ) {
     $message .= "Didn't find a type :$type:$expr: defaulting<br />";      $message .= "Didn't find a type :$type:$expr: defaulting<br />";
     if ( $answer eq ($answer *1.0)) { $type = 2;      if ( $answer eq ($answer *1.0)) { $type = 2;
Line 39  sub caparesponse_check { Line 72  sub caparesponse_check {
     } elsif ($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 59  sub caparesponse_check { Line 101  sub caparesponse_check {
     $sig_ubound =15; #SIG_UB_DEFAULT      $sig_ubound =15; #SIG_UB_DEFAULT
   } else {    } else {
     ($sig_lbound,$sig_ubound) = split /,/,$sig;      ($sig_lbound,$sig_ubound) = split /,/,$sig;
       if (!$sig_lbound) {
         $sig_lbound = 0; #SIG_LB_DEFAULT
         $sig_ubound =15; #SIG_UB_DEFAULT
       }
       if (!$sig_ubound) { $sig_ubound=$sig_lbound; }
   }    }
   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') { $result='APPROX_ANS'; }
Line 79  sub caparesponse_check { Line 127  sub caparesponse_check {
   elsif ($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 $answer;';
   if ($type ne '' && $#list > 0) {    if ($type ne '' && $#list > 0) {
     (@responselist)=split /,/,$response;      (@responselist)=split /,/,$response;
   } else {    } else {
Line 155  sub web { Line 215  sub web {
   if ( $external::target eq "tex" ) {    if ( $external::target eq "tex" ) {
     return @_[1];      return @_[1];
   } else {    } else {
     if ( $external::target eq "web") {      if ( $external::target eq "web" || $external::target eq "answer") {
       return @_[2];        return @_[2];
     } else {      } else {
       return @_[0];        return @_[0];
Line 179  sub hinton { Line 239  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);
       $hidden::RANDOMINIT=1;
     }
     if (!defined($step)) { $step=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 258  sub random_noncentral_f { Line 322  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;
 }  }
   
Line 388  sub format { Line 445  sub format {
   return sprintf('%.'.$fmt,$value);    return sprintf('%.'.$fmt,$value);
 }  }
   
   sub prettyprint {
     my ($value,$fmt)=@_;
     my $result;
     if ($fmt) { $value=sprintf('%.'.$fmt,$value); }
     if ($value =~ /([0-9\.\-\+]+)E([0-9\-\+]+)/ ) {
       my $frac=$1;
       my $exponent=$2;
       $exponent=~s/^\+0*//;
       if ($external::target eq 'web') {
         $result=$frac.'&#215;10<sup>'.$exponent.'</sup>';
       } elsif ($external::target eq 'tex') {
         $result='\ensuremath{'.$frac.'\times 10^{'.$exponent.'}}';
       } else {
         $result=$value;
       }
     } else {
       $result=$value;
     }
     return $result;
   }
   
 sub map {  sub map {
     my ($phrase,$dest,$source)=@_;      my ($phrase,$dest,$source)=@_;
     my @seed = &random_seed_from_phrase($phrase);      my @seed = &random_seed_from_phrase($phrase);
Removed from v.1.31  
changed lines
  Added in v.1.46

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