[Rd] reshape scaling with large numbers of times/rows

[Martin Maechler]

>>>>> "Mitchell" == Mitchell Skinner <mitch at arctur.us>
>>>>>     on Thu, 24 Aug 2006 00:26:52 -0700 writes:

    Mitchell> I wrote:
    >> It still needs some debugging, to put it mildly
    >> (doesn't work properly on reals), but the basic idea appears to work.

    Mitchell> It works for reals on a 64-bit machine, but not on
    Mitchell> a 32-bit machine.  I figure the culprit is this
    Mitchell> bit of c code:


    Mitchell> SET_VECTOR_ELT(wideCol, wideRow, VECTOR_ELT(longCol, rowNum));


    Mitchell> It seems like VECTOR_ELT and/or SET_VECTOR_ELT
    Mitchell> assumes that the vector elements are word-sized.

No. It assumes that use what the C API calls 'VECTOR' and R users
usually call list()s !!!

Do reread that part in the "Writing R Extensions" and rather
look at   REAL(.)[.]  and  REAL(.)[] = ..

Martin