[Amforth-devel] printing floats

[Leon N. M. <leo...@gm...>]

I've finally added a function to output floats (in scientific notation):

> 355 s>f 113 s>f f/ fs.
3.1415927  ok
> 1 s>f f2/ f2/ f2/ f2/ fs.
6.25E-2  ok
> 12345 s>f fs.
1.23449993E4  ok

You can see from the second example that rounding problems do happen. That can 
be avoided... if you don't mind coding with decuple length integers (need to 
be able to store up to 2^154). See the pdf at:

http://portal.acm.org/citation.cfm?id=93559

So I'm going to stick with this simpler -- but less accurate -- method for the 
moment (also in the pdf) -- I'll work on input before spending more time with 
output (similar problems exist -- maybe there are easier solutions). As usual, 
the code is available at:

http://github.com/lnmaurer/amforth-float

-Leon

PS I'm not sure if these type of updates are of general interest, but there's 
been a lot of floating point stuff going around, so I'll keep sending them for 
the moment.