Does .C duplicate unnecessary arguments? For instance
fit <- .C("xxx", as.integer(n), x, y, z=double(15))
The first and fourth arguments would have NAMED = 0. Is my guess that .C
won't make yet one more (unnecessary) copy correct?
(Just trying to understand).
Terry T
.C clarification
2 messages · Terry Therneau, Brian Ripley
On 03/03/2012 13:42, Terry Therneau wrote:
Does .C duplicate unnecessary arguments? For instance
fit<- .C("xxx", as.integer(n), x, y, z=double(15))
The first and fourth arguments would have NAMED = 0. Is my guess that .C
won't make yet one more (unnecessary) copy correct?
.C's internals (do_dotcode) does not know about NAMED. It duplicates (unless DUP=FALSE). Use .Call if you want to control duplication.
(Just trying to understand). Terry T
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