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\name{Primitive}
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\name{Primitive}
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\title{Call a ``Primitive'' Internal Function}
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\usage{
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.Primitive(name)
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}
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\alias{.Primitive}
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\alias{.Primitive}
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\arguments{
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\item{name}{name of the \R function.}
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\title{Call a ``Primitive'' Internal Function}
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}
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\description{
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\description{
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  \code{.Primitive} returns an entry point to a ``primitive''
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  \code{.Primitive} returns an entry point to a \dQuote{primitive}
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  (internally implemented) function.
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  (internally implemented) function.
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  The advantage of \code{.Primitive} over \code{\link{.Internal}}
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  The advantage of \code{.Primitive} over \code{\link{.Internal}}
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  functions is the potential efficiency of argument passing.
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  functions is the potential efficiency of argument passing.
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}
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}
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\usage{
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.Primitive(name)
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}
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\arguments{
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  \item{name}{name of the \R function.}
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}
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\seealso{
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\seealso{
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\code{\link{.Internal}}.
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  \code{\link{.Internal}}.
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}
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}
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\examples{
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\examples{
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mysqrt <- .Primitive("sqrt")
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mysqrt <- .Primitive("sqrt")
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c
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c
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.Internal # this one *must* be primitive!
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.Internal # this one *must* be primitive!
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get("if") # just `if' or `print(if)' are not syntactically ok.
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get("if") # just 'if' or 'print(if)' are not syntactically ok.
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}
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}
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\keyword{interface}
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\keyword{interface}