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    \code{"longdouble.\var{kind}"} values, specifying the \samp{long double}
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    \code{"longdouble.\var{kind}"} values, specifying the \samp{long double}
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    property corresponding to its \code{"double.*"} counterpart.  See
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    property corresponding to its \code{"double.*"} counterpart.  See
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    also \sQuote{Note}.}
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    also \sQuote{Note}.}
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}
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}
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\details{
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\details{
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  The algorithm is based on Cody's (1988) subroutine \code{MACHAR}.  As all
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  The algorithm is based on subroutine \code{MACHAR} \bibcitep{R:Cody:1988}.
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  As all
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  current implementations of \R use 32-bit integers and use \abbr{IEC} 60559
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  current implementations of \R use 32-bit integers and use \abbr{IEC} 60559
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  floating-point (double precision) arithmetic, the \code{"integer"} and
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  floating-point (double precision) arithmetic, the \code{"integer"} and
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  \code{"double"} related values are the same for almost all \R builds.
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  \code{"double"} related values are the same for almost all \R builds.
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  % differing sizeof.(long|longdouble|pointer)
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  % differing sizeof.(long|longdouble|pointer)
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\source{
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\source{
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  Uses a C translation of Fortran code in the reference, modified by the
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  Uses a C translation of Fortran code in the reference, modified by the
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  R Core Team to defeat over-optimization in modern compilers.
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  R Core Team to defeat over-optimization in modern compilers.
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}
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}
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\references{
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\references{
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  Cody, W. J. (1988).
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  \bibshow{*}
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  MACHAR: A subroutine to dynamically determine machine parameters.
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  \emph{Transactions on Mathematical Software}, \bold{14}(4), 303--311.
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  \doi{10.1145/50063.51907}.
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}
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}
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\seealso{
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\seealso{
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  \code{\link{.Platform}} for details of the platform.
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  \code{\link{.Platform}} for details of the platform.
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}
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}
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\examples{
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\examples{