addobfu.pl

A subroutine that will add any two arbitrarily large integers. (Sorry no floating point) 

sub add(){
    ($_[0]+$_[1])=~?^e??return$&:
    (($,,$:)=reverse(sort(@_)));
    $,?1:($,='0');$:?1:($:='0');
    for(;$:;(($^=~/(\d)(\d?)/)&&
    ($2ne''))?(($;=$1)&&($_.=$2)
    ):(($_.=$^)&&($;=0))){$:=~##
    /\d$/?($:,$-)=($`,$&):$-=0;
    $,=~/\d$/?($,,$=)=($`,$&):$=
    =0;$^=$=+$-+$;}$;?((($,=~?\d$?
    )?($;+=$&)&&($;.=reverse#$&=3
    $`):0)?1:($_=reverse$_.$;#
    )):($a=reverse$_.reverse$,)
}

[download]

Usage: 
$a = '11838471545206609368';
$b = '28664024970105317669';
print add($a,$b);

[download]


And sorry, no command line interface. It'd be somewhat awkward to enter two 100 digit integers. But if you insist, a simple code mod could allow it.


-inno

In reply to Adding numbers by innominate

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