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2015-05-02Unify prng useLars-Dominik Braun1-14/+0
Finally drop all isaac references, do not use system rng any more. Drop rng state from flam3_frame – it was not used anyway.
2015-05-02Replace isaac with xorshiftLars-Dominik Braun1-0/+14
No difference in performance. rdrand instruction alone is too slow.