Flat profile:

Each sample counts as 0.01 seconds.
  %   cumulative   self              self     total           
 time   seconds   seconds    calls  us/call  us/call  name    
 99.62      2.63     2.63    20000   131.50   131.50  FFT
  0.38      2.64     0.01    10000     1.00   264.00  example1
  0.00      2.64     0.00    10000     0.00   131.50  IFFT

			Call graph


granularity: each sample hit covers 4 byte(s) for 0.38% of 2.64 seconds

index % time    self  children    called     name
                0.01    2.63   10000/10000       main [2]
[1]    100.0    0.01    2.63   10000         example1 [1]
                1.31    0.00   10000/20000       FFT [3]
                0.00    1.31   10000/10000       IFFT [4]
-----------------------------------------------
                                                 <spontaneous>
[2]    100.0    0.00    2.64                 main [2]
                0.01    2.63   10000/10000       example1 [1]
-----------------------------------------------
                1.31    0.00   10000/20000       IFFT [4]
                1.31    0.00   10000/20000       example1 [1]
[3]     99.6    2.63    0.00   20000         FFT [3]
-----------------------------------------------
                0.00    1.31   10000/10000       example1 [1]
[4]     49.8    0.00    1.31   10000         IFFT [4]
                1.31    0.00   10000/20000       FFT [3]
-----------------------------------------------

Index by function name

   [3] FFT                     [4] IFFT                    [1] example1