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  • Raymond Toy's avatar
    Add and update some comments. · 796624d9
    Raymond Toy authored
    Add warning that rfft and cfft have different definitions for the
    forward transform.  The sign of the exponential is different.  I do
    not know why.
    
    Note that the documentation from FFTPACK51 has the same issue with the
    additional issue that the CFFT is not normalized by N whereas the RFFT
    is.
    796624d9