Marcus Claesson wrote:
> Hi there,
>
> I have a simple problem that I'm sure has been asked before (so why not
> again ;))
>
> I have a list like this:
>
> 1e-100
> 2e-100
> 1e-45
> 5e-10
> 1
> 10
> 20
>
> and want to make correct assignments:
>
> 1e-100 SMALL
> 2e-100 SMALL
> 1e-45 BIGGER
> 5e-10 BIGGER
> 1 BIGGER
> 10 BIG
> 20 BIG
>
> But with this code
>
> while (<>) {
> chomp;
> if ($_ lt 1e-50) {
> print "$_\t SMALL\n";
> } elsif (($_ gt 1e-50) && $_ lt 5) {
> print "$_\t BIGGER\n";
> } elsif ($_ gt 5) {
> print "$_\t BIGGEST\n";
> }
lt, gt etc. are used for string comparisons. Change 'lt' to < and 'gt' to >
and your code should work.
>
>
> I only get
>
> 1e-100 SMALL
> 2e-100 BIGGER
> 1e-45 SMALL
> 5e-10 BIGGEST
> 1 SMALL
> 10 SMALL
> 20 BIGGER
>
> which is not matematically correct. How do convert "floating strings" to
> floating number? I thought "lt" would be the right one to choose...
>
> Thanks in advance!
> Marcus
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