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lib: Add ptr_get_be64() function

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Get a single uint64_t value from two uint32_t values.

Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
This commit is contained in:
Donatas Abraitis 2022-10-12 21:03:42 +03:00
parent 5f37d597e8
commit 0c969118c7
1 changed files with 12 additions and 0 deletions
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12
lib/stream.h
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@ -386,6 +386,18 @@ extern void stream_fifo_free(struct stream_fifo *fifo);
* bit), for 64-bit values (you need to cast them anyway), and neither for * bit), for 64-bit values (you need to cast them anyway), and neither for
* encoding (because it's downcasted.) * encoding (because it's downcasted.)
*/ */
static inline const uint8_t *ptr_get_be64(const uint8_t *ptr, uint64_t *out)
{
uint32_t tmp1, tmp2;
memcpy(&tmp1, ptr, sizeof(tmp1));
memcpy(&tmp2, ptr + sizeof(tmp1), sizeof(tmp1));
*out = (((uint64_t)ntohl(tmp1)) << 32) | ntohl(tmp2);
return ptr + 8;
}
static inline const uint8_t *ptr_get_be32(const uint8_t *ptr, uint32_t *out) static inline const uint8_t *ptr_get_be32(const uint8_t *ptr, uint32_t *out)
{ {
uint32_t tmp; uint32_t tmp;