What about this situation - assuming you can get a large loan in Galactic Credits, at 0% APR, for a year: 
use strict;
use warnings;
use diagnostics;

my $amount = 1e9;
my $months = 12;

my $repayment = $amount/$months;
print "Monthly repayment = $repayment\n";

use integer;
$repayment = $amount/$months;
print "Monthly repayment = $repayment\n";

[download]

prints out: 

Monthly repayment = 83333333.3333333
Monthly repayment = 83333333

which is not the same thing!

On a different, but related note, increasing the loan to 1e12 Galactic Credits, gives this: 

Monthly repayment = 83333333333.3333
Monthly repayment = 0

That's because the loan amount is too big to hold in an integer (on my machine anyway): 

perl -le'use POSIX;print for SHRT_MAX, INT_MAX, LONG_MAX, FLT_MAX, DBL
+_MAX;'
32767
2147483647
2147483647
3.40282346638529e+38
1.79769313486232e+308

[download]

So use the integer pragma with caution!

In reply to Re^4: Numeric Comparisons Randomly Giving the Wrong Result by mjscott2702
in thread Numeric Comparisons Randomly Giving the Wrong Result by Likeless

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