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  1. or download this
    sub bits_needed {
    my ( $unsigned, $resolution ) = @_;
...
        if defined $resolution;
    return $bits_needed;
}
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    sub log2 {
    my $n = shift;
    return log($n)/log(2);
}
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use strict;
...
a hex representation of '{lc $new_hex}'.
  4. or download this
    
Given the hex digits '6bf' with a bit
...
a hex representation of 'fd6'.