Sean Erik O'Connor - Home Page and Free Mathematical Software.

  1                                                                    * * * * * * Single precision FFT
  2
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  4
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 22
 23
 24The discrete Fourier transform of the input data is . . . 
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 42
 43
 44The inverse transform of the transform above is . . .
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 62
 63
 64
 65* * * * * * Double precision FFT
 66
 67
 68
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 87
 88The discrete Fourier transform of the input data is . . . 
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106
107
108The inverse transform of the transform above is . . .
109
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126
127
128Test the copy constructor
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145
146                                 = floating point epsilons =
147single precision floating point epsilon = 1.19209289550781250000000000000000000000000000000000e-07
148single precision test: (1.0f + 0.999999f * epsilon) - 1.0f = 0.00000000000000000000000000000000000000000000000000e+00
149single precision test: (1.0f + epsilon - 1.0f              = 1.19209289550781250000000000000000000000000000000000e-07
150
151double precision floating point epsilon = 2.22044604925031308084726333618164062500000000000000e-16
152double precision test: (1.0f + 0.999999 * epsilon) - 1.0f = 0.00000000000000000000000000000000000000000000000000e+00
153double precision test: (1.0f + epsilon - 1.0f             = 2.22044604925031308084726333618164062500000000000000e-16
154
155
156Calling FFT with 1 point.