diff options
Diffstat (limited to 'time')
| -rw-r--r-- | time/offtime.c | 24 | ||||
| -rw-r--r-- | time/strftime.c | 4 | ||||
| -rw-r--r-- | time/tzfile.c | 32 |
3 files changed, 33 insertions, 27 deletions
diff --git a/time/offtime.c b/time/offtime.c index 4b8ddb170b..4e062df0d3 100644 --- a/time/offtime.c +++ b/time/offtime.c @@ -19,7 +19,6 @@ Cambridge, MA 02139, USA. */ #include <ansidecl.h> #include <time.h> - /* Defined in mktime.c. */ extern CONST unsigned short int __mon_yday[2][13]; @@ -33,8 +32,7 @@ void DEFUN(__offtime, (t, offset, tp), CONST time_t *t AND long int offset AND struct tm *tp) { - register long int days, rem; - register int y; + register long int days, rem, y; register CONST unsigned short int *ip; days = *t / SECS_PER_DAY; @@ -59,15 +57,19 @@ DEFUN(__offtime, (t, offset, tp), if (tp->tm_wday < 0) tp->tm_wday += 7; y = 1970; - while (days >= (rem = __isleap(y) ? 366 : 365)) - { - ++y; - days -= rem; - } - while (days < 0) + +# define LEAPS_THRU_END_OF(y) ((y) / 4 - (y) / 100 + (y) / 400) + + while (days < 0 || days >= (__isleap (y) ? 366 : 365)) { - --y; - days += __isleap(y) ? 366 : 365; + /* Guess a corrected year, assuming 365 days per year. */ + int yg = y + days / 365 - (days % 365 < 0); + + /* Adjust DAYS and Y to match the guessed year. */ + days -= ((yg - y) * 365 + + LEAPS_THRU_END_OF (yg - 1) + - LEAPS_THRU_END_OF (y - 1)); + y = yg; } tp->tm_year = y - 1900; tp->tm_yday = days; diff --git a/time/strftime.c b/time/strftime.c index 73f1ac2025..02f72b3164 100644 --- a/time/strftime.c +++ b/time/strftime.c @@ -149,7 +149,7 @@ strftime (s, maxsize, format, tp) const char *const a_month = _NL_CURRENT (LC_TIME, ABMON_1 + tp->tm_mon); const char *const f_month = _NL_CURRENT (LC_TIME, MON_1 + tp->tm_mon); const char *const ampm = _NL_CURRENT (LC_TIME, - hour12 > 12 ? PM_STR : AM_STR); + hour12 > 11 ? PM_STR : AM_STR); size_t aw_len = strlen(a_wkday); size_t am_len = strlen(a_month); size_t ap_len = strlen (ampm); @@ -158,7 +158,7 @@ strftime (s, maxsize, format, tp) const char *const f_month = month_name[tp->tm_mon]; const char *const a_wkday = f_wkday; const char *const a_month = f_month; - const char *const ampm = "AMPM" + 2 * (hour12 > 12); + const char *const ampm = "AMPM" + 2 * (hour12 > 11); size_t aw_len = 3; size_t am_len = 3; size_t ap_len = 2; diff --git a/time/tzfile.c b/time/tzfile.c index cc99802d53..e78a05ec75 100644 --- a/time/tzfile.c +++ b/time/tzfile.c @@ -60,19 +60,20 @@ static struct leap *leaps = NULL; static inline int decode (const void *ptr) { -#if BYTE_ORDER == BIG_ENDIAN - return *(const int *) ptr; -#else - const unsigned char *p = ptr; - int result = 0; - - result = (result << 8) | *p++; - result = (result << 8) | *p++; - result = (result << 8) | *p++; - result = (result << 8) | *p++; - - return result; -#endif + if ((BYTE_ORDER == BIG_ENDIAN) && sizeof (int) == 4) + return *(const int *) ptr; + else + { + const unsigned char *p = ptr; + int result = *p & (1 << (CHAR_BIT - 1)) ? ~0 : 0; + + result = (result << 8) | *p++; + result = (result << 8) | *p++; + result = (result << 8) | *p++; + result = (result << 8) | *p++; + + return result; + } } void @@ -158,6 +159,9 @@ DEFUN(__tzfile_read, (file), CONST char *file) goto lose; } + if (sizeof (time_t) < 4) + abort (); + if (fread((PTR) transitions, 4, num_transitions, f) != num_transitions || fread((PTR) type_idxs, 1, num_transitions, f) != num_transitions) goto lose; @@ -169,7 +173,7 @@ DEFUN(__tzfile_read, (file), CONST char *file) the array so as not to clobber the next element to be processed when sizeof (time_t) > 4. */ i = num_transitions; - while (num_transitions-- > 0) + while (i-- > 0) transitions[i] = decode ((char *) transitions + i*4); } |