diff options
Diffstat (limited to 'components/libc')
| -rw-r--r-- | components/libc/compilers/armlibc/sys/time.h | 1 | ||||
| -rw-r--r-- | components/libc/compilers/armlibc/time.c | 74 | ||||
| -rw-r--r-- | components/libc/compilers/dlib/sys/time.h | 1 | ||||
| -rw-r--r-- | components/libc/compilers/dlib/time.c | 74 |
4 files changed, 150 insertions, 0 deletions
diff --git a/components/libc/compilers/armlibc/sys/time.h b/components/libc/compilers/armlibc/sys/time.h index e5751cfa3d..bac122e183 100644 --- a/components/libc/compilers/armlibc/sys/time.h +++ b/components/libc/compilers/armlibc/sys/time.h @@ -45,6 +45,7 @@ struct timezone { }; int gettimeofday(struct timeval *tp, void *ignore); +struct tm *gmtime_r(const time_t *timep, struct tm *r); #ifdef __cplusplus } diff --git a/components/libc/compilers/armlibc/time.c b/components/libc/compilers/armlibc/time.c index 29c5c6cdd2..5d151fb301 100644 --- a/components/libc/compilers/armlibc/time.c +++ b/components/libc/compilers/armlibc/time.c @@ -9,6 +9,27 @@ #include <sys/time.h> #include <rtthread.h> +/* days per month -- nonleap! */ +const short __spm[13] = +{ + 0, + (31), + (31 + 28), + (31 + 28 + 31), + (31 + 28 + 31 + 30), + (31 + 28 + 31 + 30 + 31), + (31 + 28 + 31 + 30 + 31 + 30), + (31 + 28 + 31 + 30 + 31 + 30 + 31), + (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31), + (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30), + (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31), + (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30), + (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31), +}; + +/* seconds per day */ +#define SPD 24*60*60 + #ifdef RT_USING_DEVICE int gettimeofday(struct timeval *tp, void *ignore) { @@ -79,6 +100,59 @@ time_t time(time_t *t) return time_now; } +static int __isleap(int year) +{ + /* every fourth year is a leap year except for century years that are + * not divisible by 400. */ + /* return (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)); */ + return (!(year % 4) && ((year % 100) || !(year % 400))); +} + +/** + * This function will convert Time (Restartable) + * + * @param timep the timestamp + * @param the structure to stores information + * + * @return the structure to stores information + * + */ +struct tm *gmtime_r(const time_t *timep, struct tm *r) +{ + time_t i; + register time_t work = *timep % (SPD); + r->tm_sec = work % 60; + work /= 60; + r->tm_min = work % 60; + r->tm_hour = work / 60; + work = *timep / (SPD); + r->tm_wday = (4 + work) % 7; + for (i = 1970;; ++i) + { + register time_t k = __isleap(i) ? 366 : 365; + if (work >= k) + work -= k; + else + break; + } + r->tm_year = i - 1900; + r->tm_yday = work; + + r->tm_mday = 1; + if (__isleap(i) && (work > 58)) + { + if (work == 59) + r->tm_mday = 2; /* 29.2. */ + work -= 1; + } + + for (i = 11; i && (__spm[i] > work); --i) + ; + r->tm_mon = i; + r->tm_mday += work - __spm[i]; + return r; +} + RT_WEAK clock_t clock(void) { return rt_tick_get(); diff --git a/components/libc/compilers/dlib/sys/time.h b/components/libc/compilers/dlib/sys/time.h index 766d219faf..baf566936b 100644 --- a/components/libc/compilers/dlib/sys/time.h +++ b/components/libc/compilers/dlib/sys/time.h @@ -52,6 +52,7 @@ struct timezone { }; int gettimeofday(struct timeval *tp, void *ignore); +struct tm *gmtime_r(const time_t *timep, struct tm *r); #ifdef __cplusplus } diff --git a/components/libc/compilers/dlib/time.c b/components/libc/compilers/dlib/time.c index 12c7f893e9..88a61fab91 100644 --- a/components/libc/compilers/dlib/time.c +++ b/components/libc/compilers/dlib/time.c @@ -9,6 +9,27 @@ #include <sys/time.h> #include <rtthread.h> +/* days per month -- nonleap! */ +const short __spm[13] = +{ + 0, + (31), + (31 + 28), + (31 + 28 + 31), + (31 + 28 + 31 + 30), + (31 + 28 + 31 + 30 + 31), + (31 + 28 + 31 + 30 + 31 + 30), + (31 + 28 + 31 + 30 + 31 + 30 + 31), + (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31), + (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30), + (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31), + (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30), + (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31), +}; + +/* seconds per day */ +#define SPD 24*60*60 + #ifdef RT_USING_DEVICE int gettimeofday(struct timeval *tp, void *ignore) { @@ -78,6 +99,59 @@ __time32_t __time32(__time32_t *t) return time_now; } +static int __isleap(int year) +{ + /* every fourth year is a leap year except for century years that are + * not divisible by 400. */ + /* return (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)); */ + return (!(year % 4) && ((year % 100) || !(year % 400))); +} + +/** + * This function will convert Time (Restartable) + * + * @param timep the timestamp + * @param the structure to stores information + * + * @return the structure to stores information + * + */ +struct tm *gmtime_r(const time_t *timep, struct tm *r) +{ + time_t i; + register time_t work = *timep % (SPD); + r->tm_sec = work % 60; + work /= 60; + r->tm_min = work % 60; + r->tm_hour = work / 60; + work = *timep / (SPD); + r->tm_wday = (4 + work) % 7; + for (i = 1970;; ++i) + { + register time_t k = __isleap(i) ? 366 : 365; + if (work >= k) + work -= k; + else + break; + } + r->tm_year = i - 1900; + r->tm_yday = work; + + r->tm_mday = 1; + if (__isleap(i) && (work > 58)) + { + if (work == 59) + r->tm_mday = 2; /* 29.2. */ + work -= 1; + } + + for (i = 11; i && (__spm[i] > work); --i) + ; + r->tm_mon = i; + r->tm_mday += work - __spm[i]; + return r; +} + RT_WEAK clock_t clock(void) { return rt_tick_get(); |