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timex: replace print by a to_str function

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Instead of printing the timestamp, it's more flexible to convert it into
a string.
This commit is contained in:
Oleg Hahm 2014-10-19 20:41:37 +02:00
parent 8c4a874161
commit 67f82fcee0
1 changed files with 12 additions and 3 deletions
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15
sys/include/timex.h
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@ -27,6 +27,8 @@
#define SEC_IN_USEC 1000000
#define TIMEX_MAX_STR_LEN (18)
typedef struct timex_t {
uint32_t seconds;
uint32_t microseconds;
@ -87,11 +89,18 @@ static inline timex_t timex_from_uint64(const uint64_t timestamp)
}
/**
* @brief Prints a timex_t
* @brief Converts a timex_t to a struct
*/
static inline void timex_print(const timex_t t)
static inline const char *timex_to_str(timex_t t, char *timestamp)
{
printf("Seconds: %" PRIu32 " - Microseconds: %" PRIu32 "\n", t.seconds, t.microseconds);
timex_normalize(&t);
/* 2^32 seconds have maximum 10 digits, microseconds are always < 1000000
* in a normalized timestamp, plus two chars for the point and terminator
* => 10 + 6 + 2 = 20 */
/* TODO: replace call to snprintf by something more efficient */
snprintf(timestamp, TIMEX_MAX_STR_LEN, "%" PRIu32 ".%06" PRIu32 " s",
t.seconds, t.microseconds);
return timestamp;
}
#endif /* __TIMEX_H */