9999999999999999.0 - 9999999999999998.0 в 20 языках программирования:

Ruby: irb(main):001:0> 9999999999999999.0 - 9999999999999998.0
2.0

Java: public class Foo{public static void main(String args[]){System.out.println(9999999999999999.0-9999999999999998.0);}}
2.0

Python: >>> 9999999999999999.0 - 9999999999999998.0
2.0

Rebol: >> 9999999999999999.0 - 9999999999999998.0
== 2.0

Haskell: Prelude> 9999999999999999.0 - 9999999999999998.0
2.0

TCL: % expr "9999999999999999.0-9999999999999998.0"
0.0

Emacs Lisp: ELISP> (- 9999999999999999.0 9999999999999998.0)
2.0

Common–Lisp: [1]> (- 9999999999999999.0 9999999999999998.0)
0.0

Maxima: (%i1) 9999999999999999.0-9999999999999998.0; (%o1) 2.0

Google: 0

K/Q: q)9999999999999999.0-9999999999999998.0
2f

R: > 9999999999999999.0-9999999999999998.0
[1] 2

Erlang: 1> 9999999999999999.0-9999999999999998.0 .
2.0

C: main(){printf("%lf\n",(double)9999999999999999.0-9999999999999998.0);}
2.000000

AWK: $ awk 'END{print 9999999999999999.0-9999999999999998.0}'</dev/null
2

GoLang: var a = 9999999999999999.0; var b = 9999999999999998.0; fmt.Printf("%f\n", a-b)
2.000000

Perl: $ perl -e 'print 9999999999999999.0-9999999999999998.0;print "\n";'
2.0

Perl6: $ perl6 -e 'print 9999999999999999.0-9999999999999998.0;print "\n";'
1

Wolfram: 1

soup: 9999999999999999.0-9999999999999998.0
1