Output geodetic height
There seems to be either be a bug or feature, where the output of geodetic height is only possible with
out-height =geodetic # (0:ellipsoidal,1:geodetic)
solopt stores two sets of options. The geodetic height is stored in the first set of options.
/* output solution */ n=outsols(buff,&svr->rtk.sol,svr->rtk.rb,svr->solopt+i);