diff options
Diffstat (limited to 'lib/timeutils/timeutils.h')
| -rw-r--r-- | lib/timeutils/timeutils.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/lib/timeutils/timeutils.h b/lib/timeutils/timeutils.h index cb7a72123..08b0dc2e8 100644 --- a/lib/timeutils/timeutils.h +++ b/lib/timeutils/timeutils.h @@ -27,6 +27,10 @@ #ifndef MICROPY_INCLUDED_LIB_TIMEUTILS_TIMEUTILS_H #define MICROPY_INCLUDED_LIB_TIMEUTILS_TIMEUTILS_H +// The number of seconds between 1970/1/1 and 2000/1/1 is calculated using: +// time.mktime((2000,1,1,0,0,0,0,0,0)) - time.mktime((1970,1,1,0,0,0,0,0,0)) +#define TIMEUTILS_SECONDS_1970_TO_2000 (946684800ULL) + typedef struct _timeutils_struct_time_t { uint16_t tm_year; // i.e. 2014 uint8_t tm_mon; // 1..12 @@ -38,6 +42,14 @@ typedef struct _timeutils_struct_time_t { uint16_t tm_yday; // 1..366 } timeutils_struct_time_t; +static inline uint64_t timeutils_seconds_since_2000_to_nanoseconds_since_1970(mp_uint_t s) { + return ((uint64_t)s + TIMEUTILS_SECONDS_1970_TO_2000) * 1000000000ULL; +} + +static inline mp_uint_t timeutils_seconds_since_2000_from_nanoseconds_since_1970(uint64_t ns) { + return ns / 1000000000ULL - TIMEUTILS_SECONDS_1970_TO_2000; +} + bool timeutils_is_leap_year(mp_uint_t year); mp_uint_t timeutils_days_in_month(mp_uint_t year, mp_uint_t month); mp_uint_t timeutils_year_day(mp_uint_t year, mp_uint_t month, mp_uint_t date); @@ -51,4 +63,10 @@ mp_uint_t timeutils_seconds_since_2000(mp_uint_t year, mp_uint_t month, mp_uint_t timeutils_mktime(mp_uint_t year, mp_int_t month, mp_int_t mday, mp_int_t hours, mp_int_t minutes, mp_int_t seconds); +static inline uint64_t timeutils_nanoseconds_since_1970(mp_uint_t year, mp_uint_t month, + mp_uint_t date, mp_uint_t hour, mp_uint_t minute, mp_uint_t second) { + return timeutils_seconds_since_2000_to_nanoseconds_since_1970( + timeutils_seconds_since_2000(year, month, date, hour, minute, second)); +} + #endif // MICROPY_INCLUDED_LIB_TIMEUTILS_TIMEUTILS_H |