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fixed some leapyear problems

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This commit is contained in:
ceriel 1989-06-19 09:50:38 +00:00
parent 96a52f7a6f
commit 3824cfd66d
2 changed files with 6 additions and 5 deletions
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3
lang/cem/libcc/gen/gmtime.c
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@ -8,7 +8,8 @@
static int monthsize[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; static int monthsize[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
#define SECS_DAY (24*60L*60L) #define SECS_DAY (24*60L*60L)
#define YEARSIZE(year) ((year) % 4 ? 365 : 366) #define LEAPYEAR(year) (!((year) % 4) && (((year) % 100) || !((year) % 400)))
#define YEARSIZE(year) (LEAPYEAR(year) ? 366 : 365)
struct tm * struct tm *
gmtime(clock) gmtime(clock)

8
lang/cem/libcc/gen/localtime.c
View file

@ -5,10 +5,10 @@
#include <time.h> #include <time.h>
#endif #endif
#define YEARSIZE(year) ((year) % 4 ? 365 : 366) #define LEAPYEAR(year) (!((year) % 4) && (((year) % 100) || !((year) % 400)))
#define YEARSIZE(year) (LEAPYEAR(year) ? 366 : 365)
#define FIRSTSUNDAY(t) (((t)->tm_yday - (t)->tm_wday + 420) % 7) #define FIRSTSUNDAY(t) (((t)->tm_yday - (t)->tm_wday + 420) % 7)
#define SUNDAY(day, t) ((day) < 58 ? \
((day) < FIRSTSUNDAY(t) ? FIRSTSUNDAY(t) :
static int static int
last_sunday(d, t) last_sunday(d, t)
register int d; register int d;
@ -16,7 +16,7 @@ last_sunday(d, t)
{ {
int first = FIRSTSUNDAY(t); int first = FIRSTSUNDAY(t);
if (d >= 58 && YEARSIZE(t->tm_year)) d++; if (d >= 58 && LEAPYEAR(t->tm_year+1900)) d++;
if (d < first) return first; if (d < first) return first;
return d - (d - first) % 7; return d - (d - first) % 7;
} }