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sys/unaligned: Add 64 bit version

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Add helper function to access `uint64_t` values with possibly unaligned
pointers.
This commit is contained in:
Marian Buschsieweke 2020-08-14 10:09:33 +02:00
parent f64511ddb5
commit 030e0af985
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GPG Key ID: 61F64C6599B1539F
1 changed files with 18 additions and 0 deletions
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18
sys/include/unaligned.h
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@ -53,6 +53,11 @@ typedef struct __attribute__((packed)) {
uint32_t val; /**< value */ uint32_t val; /**< value */
} uint32_una_t; } uint32_una_t;
/** @brief Unaligned access helper struct (uint64_t version) */
typedef struct __attribute__((packed)) {
uint64_t val; /**< value */
} uint64_una_t;
/** /**
* @brief Get uint16_t from possibly unaligned pointer * @brief Get uint16_t from possibly unaligned pointer
* *
@ -79,6 +84,19 @@ static inline uint32_t unaligned_get_u32(const void *ptr)
return tmp->val; return tmp->val;
} }
/**
* @brief Get uint64_t from possibly unaligned pointer
*
* @param[in] ptr pointer to read from
*
* @returns value read from @p ptr
*/
static inline uint64_t unaligned_get_u64(const void *ptr)
{
const uint64_una_t *tmp = (const uint64_una_t *)ptr;
return tmp->val;
}
#ifdef __cplusplus #ifdef __cplusplus
} }
#endif #endif