Holger Kiehl wrote:
> I would like to have an unsigned off_t, what is the best and portbale way
> to define this? Currently I use the following code:
>
> #if SIZEOF_OFF_T == 4
> typedef unsigned long u_off_t;
> #else
> typedef unsigned long long u_off_t;
> #endif
>
> SIZEOF_OFF_T is returned from the gnu autoconfig tools.
>
> Is this the correct way of doing this?
There isn't any "correct" way of doing it.
> Or is there some better more portable way?
Using the types from stdint.h (uint32_t, uint64_t etc) would be more
portable than making assumptions about the sizes of "long", "long long"
etc. Alternatively:
#if SIZEOF_OFF_T == SIZEOF_INT
typedef unsigned int off_t
#elif SIZEOF_OFF_T == SIZEOF_LONG
typedef unsigned long off_t
#elif SIZEOF_OFF_T == SIZEOF_LONG_LONG
typedef unsigned long long off_t
#endif
Out of curiosity, why do you want an unsigned off_t anyhow?
--
Glynn Clements <[EMAIL PROTECTED]>
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