The MKsetup() in unique.c throws an error if the vector to be hashed is
longer than (2^32)/8:
if(n < 0 || n > 536870912) /* protect against overflow to -ve */
error(_("length %d is too large for hashing"), n);
I occasionally work with vectors longer than this on 64-bit builds. Would it be
too much to ask that R can take advantage of all 64 bits for hashing when
compiled as such?
Thanks
Ben
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