[pstricks] Suggestions for \psPrintValue

[Buddy Ledger]

>>/ Using your code as a guide I wrote the macro below.  It uses the fp package
/>>/ for the heavy lifting.  I am having trouble with spaces in the output,
/>>/ I've tryed using \ignorespaces with no luck.  If you have any ideas
/>>/ about how to fix it, I'd appreciate it.
/>>/ 
/>>/ I wrote this to convert #.####### or ///#.#####E#// /-> #.##E# or
/>>/ #.##x10^# or #.##
/>
>you should also have a look at the numprint package.
>try "texdoc numprint"
>
>Herbert

Thanks for the suggestion.  Unfortunately I don't believe that the numprint package
supports the type of conversions I'm looking for.  The docs indicate numprint behaves like:

Input Format #.##### --> Output Format #.#### (cannot achieve #.###E#)
Input Format #.###E# --> Output Format #.##E# (cannot achieve #.####)

numprint works with the input as a string and the conversions I want require a bit of math.  The
amount of math required is far less than I've used since a combination of string/math operations would
likely be most efficient......but I was in a hurry :).  

The function I wrote (at least partially anyway, thanks Micheal) will do:

Input Format #.##### --> Output Format #.#### or #.###E#
Input Format #.###E# --> Output Format #.#### or #.###E#

However, the function is limited by the fp fixed point math limitations.  A simpler implimentation
would use intger math to move the decimal place in the input (xstring package possible) to the correct location and a math function to 
do rounding (fp package or a "simple" recursive loop).  I did't know how to parse a string until looking at the inards of the numprint package (thanks for 
the push in the right direction) so I didn't do it that way. 

Buddy