version 1.18, 2001/02/20 23:46:25
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version 1.20, 2001/05/25 21:20:19
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Line 3
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Line 3
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# |
# |
# |
# |
#init some globals |
#init some globals |
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#use Math::Trig; |
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# |
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# Guy Albertelli |
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# |
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# 05/25/2001 H. K. Ng |
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# |
$RANDOMINIT=0; |
$RANDOMINIT=0; |
$pi=atan2(1,1)*4; |
$pi=atan2(1,1)*4; |
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Line 11 sub caparesponse_check {
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Line 17 sub caparesponse_check {
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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=''; |
my $sig=''; #done lowerbnd,upperbnd |
my $sig_lbound=''; |
my $sig_lbound=''; #done |
my $sig_ubound=''; |
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)=@_; |
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Line 93 sub caparesponse_check_list {
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Line 99 sub caparesponse_check_list {
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my $i=0; |
my $i=0; |
my $awards=''; |
my $awards=''; |
for ($i=0; $i<@list;$i++) { |
for ($i=0; $i<@list;$i++) { |
$aresult=&caparesponse_check($responselist[$i]." $unit", |
if ($unit eq '') { |
$expr.';my $answer='.$list[$i].';'); |
$aresult=&caparesponse_check($responselist[$i], |
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$expr.';my $answer='.$list[$i].';'); |
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} else { |
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$aresult=&caparesponse_check($responselist[$i]." $unit", |
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$expr.';my $answer='.$list[$i].';'); |
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} |
my ($temp)=split /:/, $aresult; |
my ($temp)=split /:/, $aresult; |
$awards.="$temp,"; |
$awards.="$temp,"; |
$result.=$aresult; |
$result.=$aresult; |
Line 144 sub atan { atan2($_[0], 1); }
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Line 155 sub atan { atan2($_[0], 1); }
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sub acos { atan2(sqrt(1 - $_[0] * $_[0]), $_[0] ); } |
sub acos { atan2(sqrt(1 - $_[0] * $_[0]), $_[0] ); } |
sub asin { atan2($_[0], sqrt(1- $_[0] * $_[0]) ); } |
sub asin { atan2($_[0], sqrt(1- $_[0] * $_[0]) ); } |
sub log10 { log($_[0])/log(10); } |
sub log10 { log($_[0])/log(10); } |
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sub factorial { |
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my $input = int(shift); |
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return "Error - unable to take factorial of an negative number ($input)" if $input < 0; |
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return "Error - factorial result is greater than system limit ($input)" if $input > 170; |
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return 1 if $input == 0; |
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my $result = 1; |
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for (my $i=2; $i<=$input; $i++) { $result *= $i } |
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return $result; |
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} |
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sub sgn { |
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return -1 if $_[0] < 0; |
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return 0 if $_[0] == 0; |
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return 1 if $_[0] > 0; |
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} |
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sub min { |
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my @sorted = sort { $a <=> $b || $a cmp $b } @_; |
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return shift @sorted; |
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} |
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sub max { |
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my @sorted = sort { $a <=> $b || $a cmp $b } @_; |
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return pop @sorted; |
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} |
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sub html { |
sub html { |
if ( $external::target eq "web" ) { |
if ( $external::target eq "web" ) { |
Line 151 sub html {
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Line 187 sub html {
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} |
} |
} |
} |
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sub roundto { |
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my ($input,$n) = @_; |
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return sprintf('%.'.$n.'f',$input); |
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} |
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sub to_string { |
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my ($input,$n) = @_; |
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return sprintf('%'.$n,$input) if $n ne ""; |
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return sprintf($input) if $n eq ""; |
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} |
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sub sub_string { |
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my ($str,$start,$len) = @_; |
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return substr($str,$start-1,$len); |
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} |
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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); } |