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sys: byteorder: Add support for sys_get_be64()

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There is sys_get_le64() already but nothing for 64-bit
big-endian version.

Fixes #18258

Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This commit is contained in:
Jukka Rissanen 2019-08-14 13:45:23 +03:00 • committed by Ioannis Glaropoulos
commit 0a6a10d0c4
1 changed files with 15 additions and 0 deletions
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15
include/sys/byteorder.h
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@ -229,6 +229,21 @@ static inline u32_t sys_get_be32(const u8_t src[4])
return ((u32_t)sys_get_be16(&src[0]) << 16) | sys_get_be16(&src[2]);
}
/**
* @brief Get a 64-bit integer stored in big-endian format.
*
* Get a 64-bit integer, stored in big-endian format in a potentially
* unaligned memory location, and convert it to the host endianness.
*
* @param src Location of the big-endian 64-bit integer to get.
*
* @return 64-bit integer in host endianness.
*/
static inline u64_t sys_get_be64(const u8_t src[8])
{
return ((u64_t)sys_get_be32(&src[0]) << 32) | sys_get_be32(&src[4]);
}
/**
* @brief Get a 16-bit integer stored in little-endian format.
*