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/*
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/*
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  C functions used to register compiled code in packages.
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  C functions used to register compiled code in packages.
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  Those needed for that purpose are part of the API.
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  Those needed for that purpose are part of the API.
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  Cleaned up for R 3.4.0, some changes require recompilation of packages.
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 */
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 */
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#ifndef  R_EXT_DYNLOAD_H_
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#ifndef  R_EXT_DYNLOAD_H_
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#define  R_EXT_DYNLOAD_H_
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#define  R_EXT_DYNLOAD_H_
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/* called with a variable argument set */
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/* called with a variable argument set */
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typedef void * (*DL_FUNC)();
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typedef void * (*DL_FUNC)();
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typedef unsigned int R_NativePrimitiveArgType;
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typedef unsigned int R_NativePrimitiveArgType;
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#define SINGLESXP 302 /* Don't have a single type for this. */
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/* In the future, we will want to allow people register their own types
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/* For interfaces to objects created with as.single */
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   and then refer to these in other contexts. Something like the Gtk type
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   system may be appropriate.
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#define SINGLESXP 302
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*/
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typedef unsigned int R_NativeObjectArgType;
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/*
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/*
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   Values for styles: deprecated in R 3.3.3 but still used by some packages.
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*/
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typedef enum {R_ARG_IN, R_ARG_OUT, R_ARG_IN_OUT, R_IRRELEVANT} R_NativeArgStyle;
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/*
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 These are very similar to those in  unix/dynload.c
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 These are very similar to those in Rdynpriv.h,
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 but we maintain them separately to give us more freedom to do
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 but we maintain them separately to give us more freedom to do
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 some computations on the internal versions that are derived from
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 some computations on the internal versions that are derived from
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 these definitions.
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 these definitions.
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*/
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*/
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typedef struct {
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typedef struct {
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    const char *name;
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    const char *name;
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    DL_FUNC     fun;
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    DL_FUNC     fun;
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    int         numArgs;
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    int         numArgs;
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    R_NativePrimitiveArgType *types;
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    R_NativePrimitiveArgType *types;
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    R_NativeArgStyle         *styles;  // deprecated in 3.3.3, defunct in 3.4.0
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} R_CMethodDef;
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} R_CMethodDef;
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typedef R_CMethodDef R_FortranMethodDef;
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typedef R_CMethodDef R_FortranMethodDef;
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Rboolean R_useDynamicSymbols(DllInfo *info, Rboolean value);
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Rboolean R_useDynamicSymbols(DllInfo *info, Rboolean value);
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Rboolean R_forceSymbols(DllInfo *info, Rboolean value);
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Rboolean R_forceSymbols(DllInfo *info, Rboolean value);
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DllInfo *R_getDllInfo(const char *name);
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DllInfo *R_getDllInfo(const char *name);
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/* to be used by applications embedding R to register their symbols
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/* To be used by applications embedding R to register their symbols
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   that are not related to any dynamic module */
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   that are not related to any dynamic module */
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DllInfo *R_getEmbeddingDllInfo(void);
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DllInfo *R_getEmbeddingDllInfo(void);
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typedef struct Rf_RegisteredNativeSymbol R_RegisteredNativeSymbol;
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typedef struct Rf_RegisteredNativeSymbol R_RegisteredNativeSymbol;
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typedef enum {R_ANY_SYM=0, R_C_SYM, R_CALL_SYM, R_FORTRAN_SYM, R_EXTERNAL_SYM} NativeSymbolType;
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typedef enum {R_ANY_SYM=0, R_C_SYM, R_CALL_SYM, R_FORTRAN_SYM, R_EXTERNAL_SYM} NativeSymbolType;