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    The character string specifies the file name of the DLL
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    The character string specifies the file name of the DLL
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    of interest, and is given without the file name extension (e.g., the
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    of interest, and is given without the file name extension (e.g., the
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    \file{.dll} or \file{.so}) and with no directory/path information.
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    \file{.dll} or \file{.so}) and with no directory/path information.
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    So a file \file{MyPackage/libs/MyPackage.so} would be specified as
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    So a file \file{MyPackage/libs/MyPackage.so} would be specified as
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    \samp{MyPackage}.
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    \samp{MyPackage}.
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    The \code{DLLInfo} objects can be obtained directly
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    The \code{DLLInfo} objects can be obtained directly
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    in calls to \code{\link{dyn.load}} and  \code{\link{library.dynam}},
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    in calls to \code{\link{dyn.load}} and  \code{\link{library.dynam}},
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    or can be found after the DLL has been loaded using
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    or can be found after the DLL has been loaded using
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    \code{\link{getLoadedDLLs}}, which returns a list of
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    \code{\link{getLoadedDLLs}}, which returns a list of
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    \code{DLLInfo} objects (index-able by DLL file name).
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    \code{DLLInfo} objects (index-able by DLL file name).
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  A list of class \code{"DLLRegisteredRoutines"} with four elements
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  A list of class \code{"DLLRegisteredRoutines"} with four elements
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  corresponding to the routines registered for the \code{.C},
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  corresponding to the routines registered for the \code{.C},
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  \code{.Call}, \code{.Fortran} and \code{.External} interfaces. Each is
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  \code{.Call}, \code{.Fortran} and \code{.External} interfaces. Each is
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  a list with as many elements as there were routines registered for
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  a list with as many elements as there were routines registered for
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  that interface.
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  that interface.
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  Each element identifies a routine and is an object
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  Each element identifies a routine and is an object
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  of class \code{"NativeSymbolInfo"}.
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  of class \code{"NativeSymbolInfo"}.
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  An object of this class has the following fields:
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  An object of this class has the following fields:
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  \item{name}{the registered name of the routine (not necessarily the
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  \item{name}{the registered name of the routine (not necessarily the
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    name in the C code).}
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    name in the C code).}
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    the types of the parameters also.
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    the types of the parameters also.
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  }
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  }
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}
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}
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\references{
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\references{
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  \sQuote{Writing R Extensions Manual} for symbol registration.
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  \sQuote{Writing R Extensions Manual} for symbol registration.
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  R News, Volume 1/3, September 2001.   "In search of C/C++ & Fortran Symbols"
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  R News, Volume 1/3, September 2001.   "In search of C/C++ & Fortran Symbols"
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}
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}
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\author{Duncan Temple Lang \email{duncan@wald.ucdavis.edu}}
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\author{Duncan Temple Lang \email{duncan@wald.ucdavis.edu}}
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\seealso{
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\seealso{