/* path=%path%;C:\MinGW\bin;C:\msys\1.0\bin */

#include "postgres.h"
#include <string.h>
#include "fmgr.h" 

#ifdef PG_MODULE_MAGIC
PG_MODULE_MAGIC;
#endif

/* by value */

PG_FUNCTION_INFO_V1(add_one);

Datum
add_one(PG_FUNCTION_ARGS)
{
    int32   arg = PG_GETARG_INT32(0);

    PG_RETURN_INT32(arg + 1);
}