So, I have this pile of C code that uses rank-2 arrays as double**, then
subsets them with loops like "array[i][j]." I'm so used to the J FFI
working flawlessly on C code (most of which sensibly uses double*), I
forgot that a J-array doesn't work like that, and was kind of shocked
when the code dumped core on me.
Is there any magic J incantation I can do to my arrays so that C can
more easily digest them, or should I just write a C macro to dereference
the double pointer?
This is for hierarchical clustering, if anyone is interested in that
sort of thing (a most un-J like algorithm, sadly). Maybe 2-d wavelets as
well.
-SL
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