3D FFT of three-dimensional arrays of data

The routines documented here compute the three-dimensional discrete Fourier transforms (DFT) of a three-dimensional array of complex numbers in either single or double precision arithmetic. The 3D DFT is computed using a highly-efficient FFT algorithm.

• ZFFT3D: Three-dimensional Double Complex FFT, simple driver
• CFFT3D: Three-dimensional, single precision, Complex FFT, simple driver
• ZFFT3DX: Three-dimensional Double Complex FFT, expert driver
• CFFT3DX: Three-dimensional, single precision, Complex FFT, expert driver