newlispfanclub.alh.net

Posted: **Tue Mar 21, 2006 12:03 pm**

(+) and (inc)

newLISP v.8.8.0 on Win32 MinGW, execute 'newlisp -h' for more info.

> (setq num 2147483646)
2147483646
> (+ num 5)
-2147483645
> (inc 'num 5)
2147483651
>

Why?

Posted: **Tue Mar 21, 2006 12:42 pm**

Could it be that:

If num is supplied, inc always returns the result as floating point even for integer input arguments.

I notice that

Code: Select all

(add num 5)

also gives 2147483651...