含C++所需傅里叶变换的函数总集，This manual documents version 3.3.2 of FFTW, the Fastest Fourier Transform in the West. FFTW is a comprehensive collection of fast C routines for computing the discrete Fourier transform (DFT) and various special cases thereof.

FFTW中文手册，据说FFTW（Fastest Fourier Transform in the West）是世界上最快的FFT。为了详细 了解FFTW 以及为编程方便，特将用户手册看了一下，并结合手册制作了以下FFTW 中文参考。其中大部分是原文重点内容的翻译，并加入了一些注解。-FFTW Chinese manual, reportedly FFTW (Fastest Fourier Transform in the West) is the world' s fastest FF

This manual documents version 3.3.3 of FFTW, the Fastest Fourier Transform in the West. FFTW is a comprehensive collection of fast C routines for computing the discrete Fourier transform (DFT) and various special cases.