# file name (temp): default_homework
# used by lonxml::xmlparse() as input variable $safeinit to Apache::run::run()
#
#
$RANDOMINIT=0;
sub caparesponse_check {
my $answer='';
my $type='';
my $tol_type='';
my $tolerance='';
my $sig_lbound='';
my $sig_ubound='';
my $ans_fmt='';
my $unit_str='';
my $calc='';
my ($response,$expr)=@_;
($answer,$type,$tol_type,$tolerance,$sig_lbound,$sig_ubound,$ans_fmt,
$unit_str,$calc) = eval $expr.'return $answer,$type,$tol_type,$tolerance,$sig_lbound,$sig_ubound,$ans_fmt,$unit_str,$calc';
my $result = &caparesponse_capa_check_answer($response,$answer,$type,
$tol_type,$tolerance,
$sig_lbound,$sig_ubound,
$ans_fmt, $unit_str,$calc);
return ":$result:$response:$answer:";
}
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);
}
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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