Implemented the inverse FFT (found on the web). Guessed the
corresponding factor and checked the functionality with
a proper unit test.
By the way. FFT and the inverse FFT can only cope with arrays
of the size 2, 4, 8, 16, ..., 2^N. This should be checked before
running. An apropriate Exception should be thrown if this condition
is not fullfilled.
Ralf Keidel
Modified Files:
src/java/de/fhworms/ztt/mepros/DoubleMath.java
test/src/java/unit/de/fhworms/ztt/mepros/DoubleMathTest.java
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