perlquestion perlcgi This is a basic Math question, I think :-) Any help really appreciated. I can't get the following to balance i.e. the total of all line_items (\$unconverted_amount) once converted is different to the converted invoice total. Is there a solution? Maybe I don't need Math::BigFloat. The amounts are all in pennies.<br> <code> sub convert { use Math::BigFloat; my %currency_conv_hash = (IEP=>"EUR",GBP=>"GBP",USD=>"USD",EUR=>"EUR", FFR=>"EUR", NLG=>"EUR", ESP=>"EUR", DEM=>"EUR", ITL=>"EUR", ATS=>"EUR", BEF=>"EUR", PTE=>"EUR" ); my %rate_hash = (IEP=>".787564",GBP=>"1",USD=>"1",EUR=>"1", FFR=>"6.55957",NLG=>"2.20371", ESP=>"166.386", DEM=>"1.95583", ITL=>"1936.27", ATS=>"13.7603", BEF=>"16.11", PTE=>"200.482" ); my(\$source_currency, \$unconverted_amount, \$unconverted_total_amount) = @_; my \$rate=\$rate_hash{\$source_currency}; my \$line_amount = Math::BigFloat->new(\$unconverted_amount/\$rate); my \$total_amount = Math::BigFloat->new(\$unconverted_total_amount/\$rate); return (\$currency_conv_hash{\$source_currency}, (sprintf "%.0f",\$line_amount->fround(0)), (sprintf "%.0f",\$total_amount->fround(0)) ); } Now when I later total all the line amounts i.e. what is returned by sprintf "%.0f",\$line_amount>fround(0)), the total is out by a penny or so when compared to (sprintf "%.0f",\$total_amount->fround(0)) </code> Any assistance hugely appreciated.