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sys/ztimer: make ztimer_overhead() return signed value (int32_t)

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This commit is contained in:
Kaspar Schleiser 2020-03-04 11:07:22 +01:00
parent 741b9d3b2d
commit b45f4236de
2 changed files with 2 additions and 2 deletions
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2
sys/include/ztimer/overhead.h
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@ -41,7 +41,7 @@ extern "C" {
* @param[in] base base interval to use
* @return (time from ztimer_set() until callback) - base
*/
uint32_t ztimer_overhead(ztimer_clock_t *clock, uint32_t base);
int32_t ztimer_overhead(ztimer_clock_t *clock, uint32_t base);
#endif /* ZTIMER_OVERHEAD_H */
/** @} */

2
sys/ztimer/overhead.c
View File

@ -35,7 +35,7 @@ static void _callback(void *arg)
*callback_arg->val = ztimer_now(callback_arg->clock);
}
uint32_t ztimer_overhead(ztimer_clock_t *clock, uint32_t base)
int32_t ztimer_overhead(ztimer_clock_t *clock, uint32_t base)
{
volatile uint32_t after = 0;
uint32_t pre;