projects / apple / libc.git / blame
| Commit | Line | Data |
|---|---|---|
| 1f2f436a A |
1 | --- tzfile.h.orig 2010-01-15 00:06:58.000000000 -0800 |
| 2 | +++ tzfile.h 2010-01-15 00:07:28.000000000 -0800 | |
| 3 | @@ -38,7 +38,11 @@ static char tzfilehid[] = "@(#)tzfile.h | |
| b5d655f7 A |
4 | #endif /* !defined TZDIR */ |
| 5 | ||
| 6 | #ifndef TZDEFAULT | |
| 7 | +#ifdef UNIFDEF_MOVE_LOCALTIME | |
| 8 | +#define TZDEFAULT "/var/db/timezone/localtime" | |
| 9 | +#else /* !UNIFDEF_MOVE_LOCALTIME */ | |
| 10 | #define TZDEFAULT "/etc/localtime" | |
| 11 | +#endif /* UNIFDEF_MOVE_LOCALTIME */ | |
| 12 | #endif /* !defined TZDEFAULT */ | |
| 13 | ||
| 14 | #ifndef TZDEFRULES | |
| 1f2f436a A |
15 | @@ -167,6 +171,20 @@ struct tzhead { |
| 16 | ||
| 17 | #define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0)) | |
| 18 | ||
| 19 | +/* | |
| 20 | +** Since everything in isleap is modulo 400 (or a factor of 400), we know that | |
| 21 | +** isleap(y) == isleap(y % 400) | |
| 22 | +** and so | |
| 23 | +** isleap(a + b) == isleap((a + b) % 400) | |
| 24 | +** or | |
| 25 | +** isleap(a + b) == isleap(a % 400 + b % 400) | |
| 26 | +** This is true even if % means modulo rather than Fortran remainder | |
| 27 | +** (which is allowed by C89 but not C99). | |
| 28 | +** We use this to avoid addition overflow problems. | |
| 29 | +*/ | |
| 30 | + | |
| 31 | +#define isleap_sum(a, b) isleap((a) % 400 + (b) % 400) | |
| 32 | + | |
| 33 | #ifndef USG | |
| 34 | ||
| 35 | /* |