fft -- Fft (fast fourier transform)
Single precision
 Planning effor: estimate (number of times = 1):
   -1 -- op: out-of-place CC fwd fft
   -2 -- ip: in-place     CC fwd fft
   -3 -- bv: by-value     CC fwd fft
   -5 -- op: out-of-place CC inv fft (w/scaling)
   -6 -- ip: in-place     CC inv fft (w/scaling)
   -7 -- bv: by-value     CC inv fft (w/scaling)
 Planning effor: measure (number of times = 15): 11-16
 Planning effor: pateint (number of times = 0): 21-26


Double precision
 Planning effor: estimate (number of times = 1): 101-106
 Planning effor: measure (number of times = 15): 111-116
 Planning effor: pateint (number of times = 0): 121-126