How to get algorithm from the code?

[Nakayama]

I tried 2 days to do cross compile of ROOT with Android standalone toolchain.
but Finally, I could not do it with my less knowledge… I lost my 2 days… : (

Next, I want to get algorithm only of Spectrum.
because I give up to do full compile of ROOT library with Android.
It’s impossible for me…

then, I only need 4 algorithm of some ROOT.
https://root.cern.ch/doc/master/Background__compton_8C.html
https://root.cern.ch/doc/master/Background__width_8C.html
https://root.cern.ch/doc/master/peaks_8C.html
https://root.cern.ch/doc/master/Smoothing_8C.html

I want to run this algorithm on my Java, Android tablet.
Could you advice me where is core of this algorithm ?
Which function should we re-write to Java ?

I do not need Graphic drawing parts.
I want to do ONLY:

1. With a Interger array on java
2. Put the array into a ROOT algorithm function.
3. Get Peak, background infomation from the function.

Can you help , advice me ?

Kazu, Japan , Thank you , everyone !
I need your help, really.

[couet]

The code implementing these functionalities is in $ROOTSYS/hist/spectrum

[Nakayama]

Could someone do the job instead of me ?
i have a budget to pay for the job…

Do someobe has interest in it ?

Kazu, Japan

[Wile_E_Coyote]

The original source code of these routines is C and/or C++ and is completely independent of ROOT, so maybe try to contact original authors (I’m not sure if their email addresses are still valid):

“Miroslav Morháč” Miroslav.Morhac@savba.sk and/or fyzimiro@savba.sk
"Vladislav Matoušek" Vladislav.Matousek@savba.sk