That's a good theory, but the spaceship operator $a <=> $b coerces its argument into integers numbers, so this shouldn't matter. Indeed, run your code without the + 0 or simply 

perl -le'$,="\n"; print sort {$a<=>$b} qw(1e-13 2e-18 1e-11)'

[download]
and you will see that the output is the same.

In reply to Re^2: sorting scientific numbers by kaif
in thread sorting scientific numbers by smahajan

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