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#define NA_INTEGER	R_NaInt
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#define NA_INTEGER	R_NaInt
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#define NA_FACTOR	R_NaInt
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#define NA_FACTOR	R_NaInt
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#define NA_REAL		R_NaReal
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#define NA_REAL		R_NaReal
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#define NA_STRING	R_NaString
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#define NA_STRING	R_NaString
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int R_IsNA(double);/* Missing Value Test */
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int R_IsNaN(double);/* Special NaN */
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#ifdef Win32
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#ifdef Win32
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extern int isnan(double);
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extern int isnan(double);
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extern int finite(double);
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extern int finite(double);
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#endif
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#endif