diff options
Diffstat (limited to 'date.c')
| -rw-r--r-- | date.c | 31 |
1 files changed, 31 insertions, 0 deletions
@@ -20,6 +20,14 @@ bool smaller(Date a, Date b) { ((a.year == b.year) && (a.month == b.month) && (a.day <= b.day))); } +bool strictly_smaller(Date a, Date b) { + if (zero(b)) return true; + if (zero(a)) return false; + return ((a.year < b.year) || + ((a.year == b.year) && (a.month < b.month)) || + ((a.year == b.year) && (a.month == b.month) && (a.day < b.day))); +} + bool eql(Date a, Date b) { return (a.day == b.day) && (a.month == b.month) && @@ -53,6 +61,29 @@ Date today() { return ret; } +Date tomorrow(Date td) { + Date tm = { td.day+1, td.month, td.year }; + if (tm.month == FEB && tm.day > 28) { + if (tm.year % 4 == 0 && tm.day > 29) { + tm.day -= 29; tm.month++; + } else { + tm.day -= 28; tm.month++; + } + } else if (tm.month == JAN || tm.month == MAR || tm.month == MAY || tm.month == JUL || + tm.month == AUG || tm.month == OCT || tm.month == DEC) { + if (tm.day > 31 && tm.month == DEC) { + tm.day -= 31; tm.month = 1; + } else if (tm.day > 31) { + tm.day -= 31; tm.month++; + } + } else if (tm.month == APR || tm.month == JUN || tm.month == SEP || tm.month == NOV) { + if (tm.day > 30) { + tm.day -= 30; tm.month++; + } + } + return tm; +} + Date nextweek(Date td) { Date nw = { td.day+7, td.month, td.year }; if (nw.month == FEB && nw.day > 28) { |