• Liam Healy's avatar
    Simplify FFT test code, handle GSL version <1.12 · e024b6bb
    Liam Healy authored
    The expanded FFT tests with inverse and backward transformations have
    simplified code.  Since the backward and inverse cases must be divided
    by the length, the complex test will not work in GSL versions prior to
    1.12, nor if FSBV is missing.  In these cases, the vector is computed
    by converting to a CL array, dividing by the length, and then
    converting back.