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   e.g. GUIs such as GNOME and Cocoa.  It is only used on Unix-alikes.
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   e.g. GUIs such as GNOME and Cocoa.  It is only used on Unix-alikes.
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   All entries here should be documented in doc/manual/R-exts.texi.
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   All entries here should be documented in doc/manual/R-exts.texi.
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   It should not be included by package sources unless they are
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   It should not be included by package sources unless they are
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   providing such a front-end.
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   providing such a front-end.
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   If CSTACK_DEFNS is defined, also define HAVE_UINTPTR_T before
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   including this perhaps by including Rconfig.h from C code (for C++
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   you need to test the C++ compiler in use).
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*/
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*/
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#ifndef RINTERFACE_H_
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#ifndef RINTERFACE_H_
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#define RINTERFACE_H_
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#define RINTERFACE_H_
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#include <R_ext/Boolean.h>
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#include <R_ext/Boolean.h>
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#include <R_ext/RStartup.h>
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#include <R_ext/RStartup.h>
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#ifdef __cplusplus
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#ifdef __cplusplus
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/* we do not support DO_NOT_USE_CXX_HEADERS in this file */
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# include <cstdio>
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# include <cstdio>
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extern "C" {
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extern "C" {
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#else
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#else
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# include <stdio.h>
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# include <stdio.h>
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#endif
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#endif
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#ifdef CSTACK_DEFNS
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#ifdef CSTACK_DEFNS
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/* duplicating Defn.h */
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/* duplicating Defn.h */
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#if !defined(HAVE_UINTPTR_T) && !defined(uintptr_t)
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#if !defined(HAVE_UINTPTR_T) && !defined(uintptr_t)
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 typedef unsigned long uintptr_t;
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 typedef unsigned long uintptr_t;
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#else
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#else
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#ifdef HAVE_STDINT_H
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# ifdef __cplusplus
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#  include <cstdint>
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# else
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# include <stdint.h>
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#  include <stdint.h>
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#endif
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# endif
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#endif
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#endif
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extern uintptr_t R_CStackLimit;	/* C stack limit */
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extern uintptr_t R_CStackLimit;	/* C stack limit */
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extern uintptr_t R_CStackStart;	/* Initial stack address */
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extern uintptr_t R_CStackStart;	/* Initial stack address */
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#endif
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#endif