# 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_lbound='';
my $sig_ubound='';
my $ans_fmt='';
my $units='';
my $calc='';
my ($response,$expr)=@_;
($answer,$type,$tol,$sig_lbound,$sig_ubound,$ans_fmt,
$units,$calc) = eval $expr.'return $answer,$type,$tol,$sig_lbound,$sig_ubound,$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 =~ /%$/) {
$tol=chop($tol);
$tol_type=2; #TOL_PERCENTAGE
} else {
$tol_type=1; #TOL_ABSOLUTE
}
}
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:$tol:$tol_type";
}
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 {
$SCRIPT_RESULT.='1';
return '';
}
sub hinton {
return 0;
}
sub random {
my ($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 ( $external::target eq "web" ) {
#$SCRIPT_RESULT.=@_[0];
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)=@_;
$SCRIPT_RESULT.=sprintf('%.'.$fmt,$value);
return $SCRIPT_RESULT;
}
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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