Beefy Boxes and Bandwidth Generously Provided by pair Networks
Syntactic Confectionery Delight

Re: Comparing results of math operations (try integer)

by LanX (Chancellor)
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)

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1082475]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others pondering the Monastery: (10)
As of 2016-10-27 18:27 GMT
Find Nodes?
    Voting Booth?
    How many different varieties (color, size, etc) of socks do you have in your sock drawer?

    Results (369 votes). Check out past polls.