[R] Calling C++ code fom R --How to export C++ "unsigned" integer to R?

[Boom 2k1]

Hello all,

Is there a way to export C++ "unsigned" integer to R? (I am trying to parse 
files in "BPMAP" format, and some variables are of type unsigned int (first 
declared in C++) ).

I know that to export signed integer to R,
I can do the following in C++:

int Some_INTEGER = 5;

int *p_myInt;
SEXP  myInt;
PROTECT(myInt=NEW_INTEGER(1));

myInt[0] = Some_INTEGER;

UNPROTECT(1);

return myInt;


However, it appears that myInt is a signed integer.

I have looked over Rdefines.h and it does not look like there is a 
definition for NEW_UNSIGNED_INTEGER  !

How would I export an unsigned integer to R?

obviously this won't work:

unsigned int Some_INTEGER = 5;

unsigned int *p_myInt;
SEXP  myInt;
PROTECT(myInt=NEW_INTEGER(1));

myInt[0] = Some_INTEGER;

UNPROTECT(1);

return myInt;

This would give me a casting error!


How should I get around with this?

Thanks!

Charles Cheung