Werner Almesberger 83d216244c usrp: support DCT in addition to complex FFT ...

- usrp/evscan (usage, main): treat all arguments but the last as options
  and pass them to "fft"
- usrp/fft.c (fft_complex, do_fft): moved actual FFT calculation to
  separate function
- usrp/fft.c (fft_real, do_fft): added real-valued FFT (DCT) as alternative
- usrp/fft.c (main): undocumented option -a to set the FFT algorithm

2010-11-26 12:16:34 -03:00

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