In file Mt.d:

void MtCfft

(float x[], I32 lfft, I32 idir)

Performs a complex in place FFT on the input data.

Documentation

Performs a complex in place FFT on the input data.
Parameters:
x - the input and output data.
lfft - the length of the FFT.
idir - =1 is a forwards (time to frequency) FFT, -1 is a backwards (frequency to time) FFT.
Returns:
none.

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