Well done. Anything that supports BODMAS and algebra is well worth having. Hex2 is the kind fo tool I'd have killed for when I was at high school.
Yeah, most people won't comment, but don't let that put you off. Tools like this are the kind of thing you never need... until you need them. Then you really need them.
Now get it to solve polynomials... (just kidding :)
I use it a lot (for Linux/Windows), its useful for programming ;) when you often have to deal with hexadecimal and binary numbers. For SPI/I2C communications a bit shift of your result only can be noticed with such a tool ;)
cyfm: the problem is not the 32bit integer the problem all internal calculations are done with extended or double floats which is not exact enough to do IBAN mod ;)
hmm ok I changed to it (not worth to make a new version number) could you download it again and see if it makes any difference (the cycle chain should also work)
The crash is a little bit bad... not sure how this can happen, I have no way to check that... usually a exception should happen there... so somehow I got a handle on this ini file but then a crash when try to write it. hmm,