Testing Octave 2.1.53 vs Matlab 6.1.0.450 (R12.1) for real ffts

Testing fft(  512,  512)   5.60e-02 sec (1.19e+00)     XXXXX
Testing fft2(  512,  512)  8.50e-02 sec (4.15e-01)
Testing fft(  513,  513)   1.34e-01 sec (1.28e+00)     XXXXX
Testing fft2(  513,  513)  2.03e-01 sec (8.53e-01)
Testing fft(  514,  512)   9.00e-02 sec (6.34e-01)
Testing fft2(  514,  512)  1.21e-01 sec (6.27e-01)
Testing fft(  512,  514)   5.40e-02 sec (1.15e+00)     XXXXX
Testing fft2(  512,  514)  1.22e-01 sec (4.18e-01)
Testing fft(65536,    1)   4.50e-02 sec (1.32e+00)     XXXXX
Testing fft2(65536,    1)  5.00e-02 sec (1.43e+00)     XXXXX

Testing Octave 2.1.53 vs Matlab 6.1.0.450 (R12.1) for complex ffts

Testing fft(  512,  512)   4.80e-02 sec (7.87e-01)
Testing fft2(  512,  512)  3.07e-01 sec (1.40e+00)     XXXXX
Testing fft(  513,  513)   1.31e-01 sec (8.97e-01)
Testing fft2(  513,  513)  2.67e-01 sec (9.57e-01)
Testing fft(  514,  512)   1.30e-01 sec (9.09e-01)
Testing fft2(  514,  512)  1.94e-01 sec (9.95e-01)
Testing fft(  512,  514)   4.90e-02 sec (8.17e-01)
Testing fft2(  512,  514)  2.60e-01 sec (8.50e-01)
Testing fft(65536,    1)   6.20e-02 sec (1.11e+00)     XXXXX
Testing fft2(65536,    1)  6.40e-02 sec (1.12e+00)     XXXXX

Testing Octave 2.1.53 vs Octave 2.1.50 for real ffts

Testing fft(  512,  512)   5.50e-02 sec (6.40e-01)
Testing fft2(  512,  512)  8.60e-02 sec (4.73e-01)
Testing fft(  513,  513)   1.36e-01 sec (8.24e-01)
Testing fft2(  513,  513)  2.00e-01 sec (7.52e-01)
Testing fft(  514,  512)   8.70e-02 sec (5.15e-01)
Testing fft2(  514,  512)  1.21e-01 sec (6.17e-01)
Testing fft(  512,  514)   5.50e-02 sec (6.32e-01)
Testing fft2(  512,  514)  1.20e-01 sec (4.35e-01)
Testing fft(65536,    1)   4.60e-02 sec (1.15e+00)     XXXXX
Testing fft2(65536,    1)  4.70e-02 sec (1.02e+00)     XXXXX

Testing Octave 2.1.53 vs Octave 2.1.50 for complex ffts

Testing fft(  512,  512)   4.90e-02 sec (9.61e-01)
Testing fft2(  512,  512)  3.22e-01 sec (1.75e+00)     XXXXX
Testing fft(  513,  513)   1.29e-01 sec (1.00e+00)
Testing fft2(  513,  513)  2.66e-01 sec (9.96e-01)
Testing fft(  514,  512)   1.27e-01 sec (9.69e-01)
Testing fft2(  514,  512)  1.95e-01 sec (9.95e-01)
Testing fft(  512,  514)   4.80e-02 sec (9.60e-01)
Testing fft2(  512,  514)  2.60e-01 sec (9.45e-01)
Testing fft(65536,    1)   6.20e-02 sec (2.00e+00)     XXXXX
Testing fft2(65536,    1)  6.40e-02 sec (1.36e+00)     XXXXX