[R] translating function td of package tempdisagg to FORTRAN

[MAURICE Jean - externe]

I am (still) translating long R scripts to FORTRAN to improve speed. My client deals with river's flow.

He has datas for each day of a week, we need to 'disaggregate' them to an hourly base (is that clear ?) . In R, he uses function td of library tempdisagg with the 'denton-cholette' algorithm. I would like to translate this function in FORTRAN.

I searched for denton-cholette on internet but only found 'mathematical answers' I am not able to understand.

I would like to have some  informations about this function :
  Is it only a 'wrapper' to a C or Fortran library or is it a true R function ?
  Is the source (R, Fortran, C, ...) available somewhere ?

Thanks in advance for all information you can give me !
Jean in France

PS please can you send a copy of your response directly to my address 'jean-externe.maurice at edf.fr'
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