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sys/ztimer: ztimer_now() add warning regarding comparing now() values #17404

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Dec 15, 2021
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sys/ztimer: ztimer_now() add warning regarding comparing now() values #17404

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3 changes: 3 additions & 0 deletions sys/include/ztimer.h
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Original file line number Diff line number Diff line change
Expand Up @@ -465,6 +465,9 @@ ztimer_now_t _ztimer_now_extend(ztimer_clock_t *clock);
/**
* @brief Get the current time from a clock
*
* @warning don't compare ztimer_now() values from different clocks. The
* clocks are almost certainly not synchronized.
*
* @param[in] clock ztimer clock to operate on
*
* @return Current count on @p clock
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