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Thank you once again Lyle :-) .

On Fri, 4 Feb 2005, Lyle Johnson wrote:

> On Fri, 4 Feb 2005 16:30:32 +0900, Asbjøòn Reglund Thorsen
> <asbjoert / ifi.uio.no> wrote:
>
>> This is what I tried, but did not work:
>>
>> %typemap(out) int &{      //C->Ruby, Back to Ruby int object
>>    long *n = (long *) $1;
>>    $result = INT2NUM(*n);
>> }
>
> This one won't generate a compiler error (well, it didn't for me) but
> it's dangerous to cast the return value, which is a pointer-to-int, to
> a pointer-to-long. Here's a better version of this typemap:
>
>    %typemap(out) int & {
>        $result = INT2NUM(*$1);
>    }
>
>> %typemap(in) int &{       //Ruby->C, From Ruby integer to C long
>>    $1 = NUM2INT($input);
>> }
>
> OK, this is the one that generated the compiler error you saw. Here's
> a corrected version:
>
>    %typemap(in) int & (int tmp) {
>        tmp = NUM2INT($input);
>        $1 = &tmp;
>    }
>
> Hope this helps,
>
> Lyle
>
>
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