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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2021-09-29 15:23:24 +0200 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2021-09-30 07:29:57 +0200 |
| commit | abda5595f89e3a02d5c99ca5c44b170f1c49d1e5 (patch) | |
| tree | d0a2709f3795e09d49b55b9ce112e4b18978a599 /cpukit/rtems | |
| parent | score: Improve variable names in thread init (diff) | |
| download | rtems-abda5595f89e3a02d5c99ca5c44b170f1c49d1e5.tar.bz2 | |
rtems: Justify integer conversions
Close #2548.
Diffstat (limited to 'cpukit/rtems')
| -rw-r--r-- | cpukit/rtems/src/clockgettod.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/cpukit/rtems/src/clockgettod.c b/cpukit/rtems/src/clockgettod.c index 5058b42375..01daa3dc15 100644 --- a/cpukit/rtems/src/clockgettod.c +++ b/cpukit/rtems/src/clockgettod.c @@ -100,9 +100,14 @@ rtems_status_code rtems_clock_get_tod( /* Obtain the current time */ _TOD_Get_timeval( &now ); - /* How many days and how many seconds in the day ? */ - days = now.tv_sec / RTEMS_SECS_PER_DAY; - day_secs = now.tv_sec % RTEMS_SECS_PER_DAY; + /* + * How many days and how many seconds in the day? + * + * A 32-bit integer can represent enough days for several 1000 years. When + * the current time is valid, the integer conversions below are well defined. + */ + days = (uint32_t) ( now.tv_sec / RTEMS_SECS_PER_DAY ); + day_secs = (uint32_t) ( now.tv_sec % RTEMS_SECS_PER_DAY ); /* How many non-leap year years ? */ year = ( days / RTEMS_DAYS_PER_YEAR ) + RTEMS_YEAR_BASE; |