diff options
Diffstat (limited to 'shared')
| -rw-r--r-- | shared/timespec-util.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/shared/timespec-util.h b/shared/timespec-util.h index 0e05efc7..edd4ec14 100644 --- a/shared/timespec-util.h +++ b/shared/timespec-util.h @@ -26,6 +26,9 @@ #ifndef TIMESPEC_UTIL_H #define TIMESPEC_UTIL_H +#include <stdint.h> +#include <assert.h> + #define NSEC_PER_SEC 1000000000 /* Subtract timespecs @@ -57,5 +60,16 @@ timespec_to_nsec(const struct timespec *a) return (int64_t)a->tv_sec * NSEC_PER_SEC + a->tv_nsec; } +/* Convert milli-Hertz to nanoseconds + * + * \param mhz frequency in mHz, not zero + * \return period in nanoseconds + */ +static inline int64_t +millihz_to_nsec(uint32_t mhz) +{ + assert(mhz > 0); + return 1000000000000LL / mhz; +} #endif /* TIMESPEC_UTIL_H */ |