Hi Bruno,
On 5/4/24 7:52 AM, Bruno Haible wrote:
> And we're not yet done with the header file substitutes. One is still missing
> from Gnulib: <stdbit.h> [1]. The only thing that has changed since last year
> is that glibc 2.39 now has this header file [2]. But who will want to use it,
> as long as it's not portable?
C23 and the upcoming POSIX release seem to have a lot of useful stuff.
IIRC in <stdbit.h> there is:
#define __STDC_ENDIAN_LITTLE__ /* Unique constant */
#define __STDC_ENDIAN_BIG__ /* Unique constant */
#define __STDC_ENDIAN_NATIVE__ /* __STDC_ENDIAN_LITTLE__ or
__STDC_ENDIAN_BIG__ */
probably with values taken from Glibc's <endian.h> or BSD's
<sys/endian.h>.
But, I think the next POSIX revision has <endian.h> like Glibc which I
prefer. So these defines:
#define LITTLE_ENDIAN /* Unique constant */
#define BIG_ENDIAN /* Unique constant */
#define BYTE_ORDER /* LITTLE_ENDIAN or BIG_ENDIAN */
plus functions or macros:
uint16_t be16toh (uint16_t);
uint16_t htobe16 (uint16_t);
I could try to work on that if it seems useful to anyone else.
Collin
