On Fri, May 15, 2009 at 4:03 PM, Robert Bradshaw
<[email protected]> wrote:
>
>>> Also, we are
>>> assuming that the only sizes that can occur are char, short, int,
>>> long, and long long. (It sounds inconceivable, but the C spec would
>>> allow 16-bit ints and 64-bit longs, or 64-bit ints as in ILP64.)
>>>
>>
>> OK... I could fix this returning a PyLong instance.
>
> My point was that there are systems with none of char, short, int,
> long being 32 bits, but your extern type could have 32 bits. The if-
> then statement dispatching on type sizes wouldn't work.
>
I understood precisely that, and my point was that is more or less
easy to support, for example
...
else if (sizeof(type) == sizeof(long long))
...
else {
unsigned char *bytes = (unsigned char *) &VALUE;
int one = 1; int little = (int)*(unsigned char*)&one;
return _PyLong_FromByteArray(bytes, sizeof(type), little, SIGNED);
}
>> What do you think? Does this make sense? Any better syntax?
>
> I'm -1 on both the syntax and the idea, comments in the next email.
>
OK, waiting for it...
--
Lisandro Dalcín
---------------
Centro Internacional de Métodos Computacionales en Ingeniería (CIMEC)
Instituto de Desarrollo Tecnológico para la Industria Química (INTEC)
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
PTLC - Güemes 3450, (3000) Santa Fe, Argentina
Tel/Fax: +54-(0)342-451.1594
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