add_two.c


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#include "postgres.h"
#include "fmgr.h"


PG_MODULE_MAGIC;


extern int32 Adder(int32);


PG_FUNCTION_INFO_V1(add_two);


Datum
add_two(PG_FUNCTION_ARGS)
{
    int32 arg = PG_GETARG_INT32(0);
    PG_RETURN_INT32(Adder(arg));
}