File:  [LON-CAPA] / loncom / homework / default_homework.lcpm
Revision 1.14: download - view: text, annotated - select for diffs
Wed Jan 3 00:14:47 2001 UTC (23 years, 2 months ago) by albertel
Branches: MAIN
CVS tags: HEAD
- changes necceasary to implement a at least somewhat operational <numericresponse>

# file name (temp): default_homework 
# used by lonxml::xmlparse() as input variable $safeinit to Apache::run::run()
# 
#
$RANDOMINIT=0;

sub caparesponse_check {
  my $answer='';  #done
  my $type='';    #done
  my $tol_type=''; # gets it's value from whether tol has a % or not done
  my $tol='';     #done
  my $sig='';
  my $sig_lbound='';
  my $sig_ubound='';
  my $ans_fmt='';
  my $units='';
  my $calc='';
  my ($response,$expr)=@_;
  
  ($answer,$type,$tol,$sig,$ans_fmt,
   $units,$calc) = eval $expr.';return $answer,$type,$tol,$sig,$ans_fmt,$units,$calc';
  #type's definitons come from capaParser.h
  if ($type eq '' ) {
    if ( $answer eq ($answer *1.0)) { $type = 2;
    } else { $type = 3; }
  } else {
         if ($type eq 'cs')    { $type = 4;
    } elsif ($type eq 'ci')    { $type = 3;
    } elsif ($type eq 'mc')    { $type = 5;
    } elsif ($type eq 'fml')   { $type = 8;
    } elsif ($type eq 'subj')  { $type = 7;
    } else { return "ERROR: Unknown type of answer: $type" }
  }

  if ($tol eq '') {
    $tol=0.0;
    $tol_type=1; #TOL_ABSOLUTE
  } else {
    if ($tol =~ /%$/) {
      chop $tol;
      $tol_type=2; #TOL_PERCENTAGE
    } else {
      $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,
					       $tol_type,$tol,
					       $sig_lbound,$sig_ubound,
					       $ans_fmt,$units,$calc);

  if    ($result == '1') { $result='EXACT_ANS'; } 
  elsif ($result == '2') { $result='APPROX_ANS'; }
  elsif ($result == '3') { $result='SIG_FAIL'; }
  elsif ($result == '4') { $result='UNIT_FAIL'; }
  elsif ($result == '5') { $result='NO_UNIT'; }
  elsif ($result == '6') { $result='UNIT_OK'; }
  elsif ($result == '7') { $result='INCORRECT'; }
  elsif ($result == '8') { $result='UNIT_NOTNEEDED'; }
  elsif ($result == '9') { $result='ANS_CNT_NOT_MATCH'; }
  elsif ($result =='10') { $result='SUB_RECORDED'; }
  elsif ($result =='11') { $result='BAD_FORMULA'; }
  elsif ($result =='12') { $result='WANTED_NUMERIC'; }
  else  {$result = "ERROR: Unknown Result:$result:$@:";}

  return "$result:$error:$answer:$response:$type|$tol|$tol_type|$sig:$sig_lbound:$sig_ubound|$units";
}

sub caparesponse_check_list {
  my ($response,$expr)=@_;
  my $result='';
  my $current_answer;
  my $answer = eval $expr.';return $answer';
  my (@list) = eval $answer;
  my (@responselist)=split /,/,$response;
  ($responselist['-1'],my $unit)= split /\s/, $responselist['-1'], 2;
  $unit=~s/\s//;
  my $i=0;
  my $awards='';
  for ($i=0; $i<@list;$i++) {
    $result.=&caparesponse_check($responselist[$i]." $unit",
				 $expr.';my $answer='.$list[$i].';');
    my ($temp)=split /:/, $result;
    $awards.="$temp,";
  }
  chop $awards;
  return "$awards:$result";
}

sub tex {
  if ( $external::target eq "tex" ) {
    return @_[0];
  } else {
    return @_[1];
  }
}

sub web {
  if ( $external::target eq "tex" ) {
    return @_[1];
  } else {
    if ( $external::target eq "web") {
      return @_[0];
    } else {
      return @_[2];
    }
  }
}

sub problem {
  return '1';
}

sub hinton {
  return 0;
}

sub random {
  my ($start,$end,$step)=@_;
  if ( ! $RANDOMINIT ) { srand($external::randomseed); $RANDOMINIT=1; }
  my $num=1+int(($end-$start)/$step);
  my $result=$start + int(rand() * $num)*$step;
  return $result;
}

sub tan  { sin($_[0]) / cos($_[0]) }
sub acos { atan2(sqrt(1 - $_[0] * $_[0]), $_[0] ); }
sub asin { atan2($_[0], sqrt(1- $_[0] * $_[0]) );  }

sub html {
  if ( $external::target eq "web" ) {
    return @_[0];
  }
}


sub pow   {return $_[0] ** $_[1]; }
sub ceil  {return (($_[0]-int($_[0]))== 0.0) ? $_[0] : (int($_[0])+ 1); }
sub floor {return int($_[0]);  }

sub format {
  my ($value,$fmt)=@_;
  return 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";

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