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Re: Comparing results of math operations (try integer)

by LanX (Canon)
on Apr 16, 2014 at 09:55 UTC ( #1082475=note: print w/ replies, xml ) Need Help??


in reply to Comparing results of math operations

Better avoid decimal fractions!

They can't always be transformed loss-free to binary fractions (see Re: eq vs ==)

But this works:

DB<107> $x=95*806 /100; => "765.7" DB<108> $y=13*589 /10; => "765.7" DB<109> $x <=> $y => 0

So just calculate with integers and shift the decimal point afterwards!

The deeper reason for this mess is that Humans have too many fingers ;-)

Cheers Rolf

( addicted to the Perl Programming Language)


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