Engineering notation is also on the todo list (see FE. in the standard). I don't know about the HP25, but many older HP calculators used the Saturn microprocessor that could handle 16 BCD digits.
http://en.wikipedia.org/wiki/Saturn_(microprocessor) I've seen the 4th stuff -- definitely a lot of good material (I wish I'd seen it sooner). -Leon On Saturday, September 04, 2010 03:30:56 pm you wrote: > A point to fs. For small systems float with 3-4 decimal places is > perfect when measuring standard stuff except when measure frequency > or time. What could be nice to have is engineering notation. I have > got it on my HP-25, and frankly, I do not understand how they did it > on such small footprint. Not sure whether it's processor calculates > in BCD directly, then it is easy. Once I did it on pic in C, but the > code was big as I had needed log(). Pito ------------------------------------------------------------------------------ This SF.net Dev2Dev email is sponsored by: Show off your parallel programming skills. Enter the Intel(R) Threading Challenge 2010. http://p.sf.net/sfu/intel-thread-sfd _______________________________________________ Amforth-devel mailing list Amforth-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/amforth-devel
