split is not working the way you expect it to in your code because the first argument to split is a regular expression. Since "." is a special character in a regex, it must be escaped. I think this does what you expect: 
my ( $int, $float ) = split /\./, $num;

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In reply to Re: Round down to '.5' or '.0' by toolic
in thread Round down to '.5' or '.0' by awohld

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