diff options
Diffstat (limited to 'mrbgems/mruby-time/src')
| -rw-r--r-- | mrbgems/mruby-time/src/time.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/mrbgems/mruby-time/src/time.c b/mrbgems/mruby-time/src/time.c index e6c6b9904..98198083b 100644 --- a/mrbgems/mruby-time/src/time.c +++ b/mrbgems/mruby-time/src/time.c @@ -138,8 +138,14 @@ timegm(struct tm *tm) int i; unsigned int *nday = (unsigned int*) ndays[is_leapyear(tm->tm_year+1900)]; - for (i = 70; i < tm->tm_year; ++i) - r += is_leapyear(i+1900) ? 366*24*60*60 : 365*24*60*60; + static const int epoch_year = 70; + if(tm->tm_year >= epoch_year) { + for (i = epoch_year; i < tm->tm_year; ++i) + r += is_leapyear(i+1900) ? 366*24*60*60 : 365*24*60*60; + } else { + for (i = tm->tm_year; i < epoch_year; ++i) + r -= is_leapyear(i+1900) ? 366*24*60*60 : 365*24*60*60; + } for (i = 0; i < tm->tm_mon; ++i) r += nday[i] * 24 * 60 * 60; r += (tm->tm_mday - 1) * 24 * 60 * 60; |