fft_time.c  Alpha 533 SuSE 
N=16 FFT time=2.4888e-06 
     inv time=2.9768e-06 
    both time=4.9776e-06 

N=32 FFT time=6.1488e-06 
     inv time=6.4416e-06 
    both time=1.14192e-05 

N=64 FFT time=1.28832e-05 
     inv time=1.38592e-05 
    both time=2.44e-05 

N=128 FFT time=3.1232e-05 
     inv time=2.9768e-05 
    both time=5.4168e-05 

N=256 FFT time=6.7344e-05 
     inv time=6.344e-05 
    both time=0.000118096 

N=512 FFT time=0.000144448 
     inv time=0.000132736 
    both time=0.000257664 

N=1024 FFT time=0.00031232 
     inv time=0.00027816 
    both time=0.00054656 

N=2048 FFT time=0.0006832 
     inv time=0.00057584 
    both time=0.00119072 

N=4096 FFT time=0.0015616 
     inv time=0.00122976 
    both time=0.00261568