a gsl_interp_poly type candidate submited [code maturity is low]

[Dan, Ho-Jin]

Hi there,
I couldn't seek the global polynomial interpolation  for distinct n 
points similar
to POLINT in the slatec library. The global polynomial interpolation 
generally
is not good for interpolating data since its error behavior is not so 
good. But
it is frequently used as a basic building block in other routines. (I 
need also
another for complex data set). I have to submit the low mature code in 
order to
confirm  my work.

1. I am a novice in developing a free software, so I confuse how to 
submit codes,
    patches and manuals(I can handle a document of the latex format).
2. in the vim editor, how to set the gnu-recommended c-indenting.
3. If a submitted code doesn't seem to be useful, please suggest another 
proxy
4. Is the name of "polynomial" type good or too general?
5. One of Higher-level interfaces will generate coefs. of a polynomial for
    gsl_poly_eval(),  gsl_poly_solve() etc.
6. complex counterparts will be submited.

note. GNU GPL lisence will be attached.



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