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V 2
pi
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V 27
2015-07-18T16:10:39.960768Z
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V 448
math/fxt: upgrade 2012.06.18 -> 2015.07.17

A substantial number of algorithms have been added, much in the
combinatorial section, but also quite a few others.
Very many routines have been improved (optimizations and
handling corner cases).

Everything (well, all demos) pass valgrind, so a handful of bugs have
been squished that are next to impossible to find otherwise.

Apart from that, a real and ongoing effort has been made for readability.

END