72   Fft fft = Fft(N);  // instantiate and prepareLength() for length N  in Ttest()  local
78   auto X = fft.valueVector();                    // for X = input vector  in Ttest()
79   pffft::AlignedVector<typename Fft::Complex> Y = fft.spectrumVector();  // for Y = forward(X)  in Ttest()
80 …pffft::AlignedVector<FftScalar> R = fft.internalLayoutVector(); // for R = forwardInternalLayout(X)  in Ttest()
81   pffft::AlignedVector<T> Z = fft.valueVector(); // for Z = inverse(Y) = inverse( forward(X) )  in Ttest()
86   pffft::AlignedVector<T> X = fft.valueVector();     // for X = input vector  in Ttest()
87   pffft::AlignedVector<FftComplex>   Y = fft.spectrumVector();  // for Y = forward(X)  in Ttest()
88 …pffft::AlignedVector<typename Fft::Scalar>  R = fft.internalLayoutVector(); // for R = forwardInte…  in Ttest()
89   pffft::AlignedVector<T> Z = fft.valueVector();     // for Z = inverse(Y) = inverse( forward(X) )  in Ttest()
136         fft.forward(X, Y);  in Ttest()
138         fft.forwardToInternalLayout(X, R); /* use R for reordering */  in Ttest()
139         fft.reorderSpectrum(R, Y); /* have canonical order in Y[] for power calculations */  in Ttest()
222         fft.inverse(Y, Z);  in Ttest()
224         fft.inverseFromInternalLayout(R, Z); /* inverse() from internal Layout */  in Ttest()