FN Object: 1 MPI process
  type: log
    logarithm: log(x)
  f(2.2)=0.788457
  f'(2.2)=0.454545
FN Object: 1 MPI process
  type: log
    logarithm: +1.3*log(+0.2*x)
  f(2.2)=-1.06727
  f'(2.2)=0.590909
