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Diff for /loncom/homework/default_homework.lcpm between versions 1.11 and 1.21

version 1.11, 2000/11/22 00:00:54 version 1.21, 2001/05/28 21:47:48
Line 2 Line 2
 # used by lonxml::xmlparse() as input variable $safeinit to Apache::run::run()  # used by lonxml::xmlparse() as input variable $safeinit to Apache::run::run()
 #   # 
 #  #
   #init some globals
   #use Math::Trig;
   #
   # Guy Albertelli
   #
   # 05/25/2001 H. K. Ng
   #
 $RANDOMINIT=0;  $RANDOMINIT=0;
   #$pi=atan2(1,1)*4;
   
 sub caparesponse_check {  sub caparesponse_check {
   my $answer='';  #done    my $answer='';  #done
   my $type='';    #done    my $type='';    #done
   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 $tol='';     #done
   my $sig_lbound='';    my $sig='';     #done lowerbnd,upperbnd
   my $sig_ubound='';    my $sig_lbound=''; #done
     my $sig_ubound=''; #done
   my $ans_fmt='';    my $ans_fmt='';
   my $units='';    my $units='';     #done
   my $calc='';    my $calc='';
   my ($response,$expr)=@_;    my ($response,$expr)=@_;
       
   ($answer,$type,$tol,$sig_lbound,$sig_ubound,$ans_fmt,    ($answer,$type,$tol,$sig,$ans_fmt,
    $units,$calc) = eval $expr.'return $answer,$type,$tol,$sig_lbound,$sig_ubound,$ans_fmt,$units,$calc';     $units,$calc) = eval $expr.';return $answer,$type,$tol,$sig,$ans_fmt,$units,$calc';
   
   #type's definitons come from capaParser.h    #type's definitons come from capaParser.h
   if ($type eq '' ) {    if ($type eq '' ) {
     if ( $answer eq ($answer *1.0)) { $type = 2;      if ( $answer eq ($answer *1.0)) { $type = 2;
Line 37  sub caparesponse_check { Line 45  sub caparesponse_check {
     $tol_type=1; #TOL_ABSOLUTE      $tol_type=1; #TOL_ABSOLUTE
   } else {    } else {
     if ($tol =~ /%$/) {      if ($tol =~ /%$/) {
       $tol=chop($tol);        chop $tol;
       $tol_type=2; #TOL_PERCENTAGE        $tol_type=2; #TOL_PERCENTAGE
     } else {      } else {
       $tol_type=1; #TOL_ABSOLUTE        $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,    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, $units,$calc);         $ans_fmt,$units,$calc);
   
   if    ($result == '1') { $result='EXACT_ANS'; }     if    ($result == '1') { $result='EXACT_ANS'; } 
   elsif ($result == '2') { $result='APPROX_ANS'; }    elsif ($result == '2') { $result='APPROX_ANS'; }
Line 60  sub caparesponse_check { Line 75  sub caparesponse_check {
   elsif ($result =='10') { $result='SUB_RECORDED'; }    elsif ($result =='10') { $result='SUB_RECORDED'; }
   elsif ($result =='11') { $result='BAD_FORMULA'; }    elsif ($result =='11') { $result='BAD_FORMULA'; }
   elsif ($result =='12') { $result='WANTED_NUMERIC'; }    elsif ($result =='12') { $result='WANTED_NUMERIC'; }
   else  {$result = "ERROR: Unknown Result: $result";}    else  {$result = "ERROR: Unknown Result:$result:$@:";}
   
   return "$result:$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++) {
       if ($unit eq '') {
         $aresult=&caparesponse_check($responselist[$i],
        $expr.';my $answer='.$list[$i].';');
       } else {
         $aresult=&caparesponse_check($responselist[$i]." $unit",
      $expr.';my $answer='.$list[$i].';');
       }
       my ($temp)=split /:/, $aresult;
       $awards.="$temp,";
       $result.=$aresult;
     }
     chop $awards;
     return "$awards:<br />$result";
 }  }
   
 sub tex {  sub tex {
Line 102  sub random { Line 151  sub random {
 }  }
   
 sub tan  { sin($_[0]) / cos($_[0]) }  sub tan  { sin($_[0]) / cos($_[0]) }
 sub acos { atan2(sqrt(1 - $_[0] * $_[0]), $_[0] ); }  #sub atan { atan2($_[0], 1); }
 sub asin { atan2($_[0], sqrt(1- $_[0] * $_[0]) );  }  #sub acos { atan2(sqrt(1 - $_[0] * $_[0]), $_[0] ); }
   #sub asin { atan2($_[0], sqrt(1- $_[0] * $_[0]) );  }
   sub log10 { log($_[0])/log(10); }
   sub factorial {
       my $input = int(shift);
       return "Error - unable to take factorial of an negative number ($input)" if $input < 0;
       return "Error - factorial result is greater than system limit ($input)" if $input > 170;
       return 1 if $input == 0;
       my $result = 1; 
       for (my $i=2; $i<=$input; $i++) { $result *= $i }
       return $result;
   }
   
   sub sgn {
       return -1 if $_[0] < 0;
       return 0 if $_[0] == 0;
       return 1 if $_[0] > 0;
   }
   
   sub min {
       my @sorted = sort { $a <=> $b || $a cmp $b } @_;
       return shift @sorted;
   }
   
   sub max {
       my @sorted = sort { $a <=> $b || $a cmp $b } @_;
       return pop @sorted;
   }
   
 sub html {  sub html {
   if ( $external::target eq "web" ) {    if ( $external::target eq "web" ) {
Line 111  sub html { Line 187  sub html {
   }    }
 }  }
   
   sub roundto {
       my ($input,$n) = @_;
       return sprintf('%.'.$n.'f',$input);
   }
   
   sub to_string {
       my ($input,$n) = @_;
       return sprintf('%'.$n,$input) if $n ne "";
       return sprintf($input) if $n eq "";
   }
   
   sub sub_string {
       my ($str,$start,$len) = @_;
       return substr($str,$start-1,$len);
   }
   
 sub pow   {return $_[0] ** $_[1]; }  sub pow   {return $_[0] ** $_[1]; }
 sub ceil  {return (($_[0]-int($_[0]))== 0.0) ? $_[0] : (int($_[0])+ 1); }  sub ceil  {return (($_[0]-int($_[0]))== 0.0) ? $_[0] : (int($_[0])+ 1); }
Removed from v.1.11  
changed lines
  Added in v.1.21

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