Hi George,
>>
>>AFAIR I tried doing that with RtlMoveMemory once, but ran into trouble somewhere around 2**31,
>>which meant for me some problem with the bit defining the sign of the number, or translation problems >>with INTEGER/LONG in the declare line.

>It may be a problem due to the fact that VFP treats all integers as signed. There are several copies of >my string to integer class in the download section.

Ok, I've found your routines and will add them for checking my results - nice and compact due to the parametrization. I also found some similar routines by Ed Rauh, and he documents the usable range of the converted numbers via RtlMoveMemory to the same range. Writing a very small fll-function probably won't get any better speed, because another function call is needed. So back to speeding up vfp code.

thanks,

thomas