Why "use integer" makes no difference, IMO, is that Perl recognises the example expression as floating point and will only apply the use integer pragma to fixed point notation - which suggests that for question 2 the answer is to convert the notation first, perhaps using Math::FixedPrecision along the way.
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^M Free your mind!

In reply to Re: Exasperated with 64-bit integer builds of perl by Moron
in thread Exasperated with 64-bit integer builds of perl by syphilis

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