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The documentation for the current release is also available on this site.
NAG Library Manual, Mark 27.1
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NAG CL Interface Introduction
Example description
nag_sum_fft_complex_1d_multi_col (c06psc) Example Program Results

 Original data values

   0.3854  0.6772  0.1138  0.6751  0.6362  0.1424
   0.5417  0.2983  0.1181  0.7255  0.8638  0.8723

   0.9172  0.0644  0.6037  0.6430  0.0428  0.4815
   0.9089  0.3118  0.3465  0.6198  0.2668  0.1614

   0.1156  0.0685  0.2060  0.8630  0.6967  0.2792
   0.6214  0.8681  0.7060  0.8652  0.9190  0.3355

 Components of discrete Fourier transform

   1.0737 -0.5706  0.1733 -0.1467  0.0518  0.3625
   1.3961 -0.0409 -0.2958 -0.1521  0.4517 -0.0321

   1.1237  0.1728  0.4185  0.1530  0.3686  0.0101
   1.0677  0.0386  0.7481  0.1752  0.0565  0.1403

   0.9100 -0.3054  0.4079 -0.0785 -0.1193 -0.5314
   1.7617  0.0624 -0.0695  0.0725  0.1285 -0.4335

 Original sequence as restored by inverse transform

   0.3854  0.6772  0.1138  0.6751  0.6362  0.1424
   0.5417  0.2983  0.1181  0.7255  0.8638  0.8723

   0.9172  0.0644  0.6037  0.6430  0.0428  0.4815
   0.9089  0.3118  0.3465  0.6198  0.2668  0.1614

   0.1156  0.0685  0.2060  0.8630  0.6967  0.2792
   0.6214  0.8681  0.7060  0.8652  0.9190  0.3355