Jeff King wrote:
> --- a/ewah/ewah_io.c
> +++ b/ewah/ewah_io.c
> @@ -112,23 +112,38 @@ int ewah_serialize(struct ewah_bitmap *self, int fd)
[...]
> +#if __BYTE_ORDER != __BIG_ENDIAN
Is this portable?
On a platform without __BYTE_ORDER or __BIG_ENDIAN defined,
it is interpreted as
#if 0 != 0
which means that such platforms are assumed to be big endian.
Does Mingw define __BYTE_ORDER, for example?
> + {
> + size_t i;
> + for (i = 0; i < self->buffer_size; ++i)
> + self->buffer[i] = ntohll(self->buffer[i]);
> + }
> +#endif
It's tempting to guard with something like
if (ntohl(1) != 1) {
...
}
The optimizer can tell if this is true or false at compile time, so
it shouldn't slow anything down.
With that change,
Reviewed-by: Jonathan Nieder <[email protected]>
Thanks for the quick fix.
diff --git i/ewah/ewah_io.c w/ewah/ewah_io.c
index 4a7fae6..5a527a4 100644
--- i/ewah/ewah_io.c
+++ w/ewah/ewah_io.c
@@ -135,13 +135,11 @@ int ewah_read_mmap(struct ewah_bitmap *self, void *map,
size_t len)
memcpy(self->buffer, ptr, self->buffer_size * sizeof(uint64_t));
ptr += self->buffer_size * sizeof(uint64_t);
-#if __BYTE_ORDER != __BIG_ENDIAN
- {
+ if (ntohl(1) != 1) {
size_t i;
for (i = 0; i < self->buffer_size; ++i)
self->buffer[i] = ntohll(self->buffer[i]);
}
-#endif
self->rlw = self->buffer + get_be32(ptr);
--
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