C++ (Cpp) g_date_update_julianの例

コード例 #1

ファイル: gdate.c プロジェクト: Onjrew/OpenEV

gint         
g_date_compare (GDate     *lhs, 
                GDate     *rhs)
{
  g_return_val_if_fail (lhs != NULL, 0);
  g_return_val_if_fail (rhs != NULL, 0);
  g_return_val_if_fail (g_date_valid (lhs), 0);
  g_return_val_if_fail (g_date_valid (rhs), 0);
  
  /* Remember the self-comparison case! I think it works right now. */
  
  while (TRUE)
    {
      
      if (lhs->julian && rhs->julian) 
        {
          if (lhs->julian_days < rhs->julian_days) return -1;
          else if (lhs->julian_days > rhs->julian_days) return 1;
          else                                          return 0;
        }
      else if (lhs->dmy && rhs->dmy) 
        {
          if (lhs->year < rhs->year)               return -1;
          else if (lhs->year > rhs->year)               return 1;
          else 
            {
              if (lhs->month < rhs->month)         return -1;
              else if (lhs->month > rhs->month)         return 1;
              else 
                {
                  if (lhs->day < rhs->day)              return -1;
                  else if (lhs->day > rhs->day)              return 1;
                  else                                       return 0;
                }
              
            }
          
        }
      else
        {
          if (!lhs->julian) g_date_update_julian (lhs);
          if (!rhs->julian) g_date_update_julian (rhs);
          g_return_val_if_fail (lhs->julian, 0);
          g_return_val_if_fail (rhs->julian, 0);
        }
      
    }
  return 0; /* warnings */
}

コード例 #2

ファイル: gdate.c プロジェクト: thewb/mokoiax

guint32      
g_date_get_julian (const GDate *d)
{
  g_return_val_if_fail (g_date_valid (d), G_DATE_BAD_JULIAN);
  
  if (!d->julian) 
    g_date_update_julian (d);

  g_return_val_if_fail (d->julian, G_DATE_BAD_JULIAN);  
  
  return d->julian_days;
}

コード例 #3

ファイル: gdate.c プロジェクト: thewb/mokoiax

GDateWeekday 
g_date_get_weekday (const GDate *d)
{
  g_return_val_if_fail (g_date_valid (d), G_DATE_BAD_WEEKDAY);
  
  if (!d->julian) 
    g_date_update_julian (d);

  g_return_val_if_fail (d->julian, G_DATE_BAD_WEEKDAY);
  
  return ((d->julian_days - 1) % 7) + 1;
}

コード例 #4

ファイル: gdate.c プロジェクト: thewb/mokoiax

void         
g_date_add_days (GDate *d, 
                 guint  ndays)
{
  g_return_if_fail (g_date_valid (d));
  
  if (!d->julian)
    g_date_update_julian (d);

  g_return_if_fail (d->julian);
  
  d->julian_days += ndays;
  d->dmy = FALSE;
}

コード例 #5

ファイル: gdate.c プロジェクト: Onjrew/OpenEV

guint32      
g_date_julian (GDate *d)
{
  g_return_val_if_fail (d != NULL, G_DATE_BAD_JULIAN);
  g_return_val_if_fail (g_date_valid (d), G_DATE_BAD_JULIAN);
  
  if (!d->julian) 
    {
      g_date_update_julian (d);
    }
  g_return_val_if_fail (d->julian, G_DATE_BAD_JULIAN);  
  
  return d->julian_days;
}

コード例 #6

ファイル: gdate.c プロジェクト: Onjrew/OpenEV

void         
g_date_subtract_days (GDate *d, guint ndays)
{
  g_return_if_fail (d != NULL);
  g_return_if_fail (g_date_valid (d));
  
  if (!d->julian)
    {
      g_date_update_julian (d);
    }
  g_return_if_fail (d->julian);
  g_return_if_fail (d->julian_days > ndays);
  
  d->julian_days -= ndays;
  d->dmy = FALSE;
}

コード例 #7

ファイル: gdate.c プロジェクト: thewb/mokoiax

/**
 * g_date_get_iso8601_week_of_year:
 * @date: a valid #GDate
 *
 * Returns the week of the year, where weeks are interpreted according
 * to ISO 8601. 
 * 
 * Returns: ISO 8601 week number of the year.
 *
 * Since: 2.6
 **/
guint
g_date_get_iso8601_week_of_year (const GDate *d)
{
  guint j, d4, L, d1, w;

  g_return_val_if_fail (g_date_valid (d), 0);
  
  if (!d->julian)
    g_date_update_julian (d);

  g_return_val_if_fail (d->julian, 0);

  /* Formula taken from the Calendar FAQ; the formula was for the
   * Julian Period which starts on 1 January 4713 BC, so we add
   * 1,721,425 to the number of days before doing the formula. 
   */
  j  = d->julian_days + 1721425;
  d4 = (j + 31741 - (j % 7)) % 146097 % 36524 % 1461;
  L  = d4 / 1460;
  d1 = ((d4 - L) % 365) + L;
  w  = d1 / 7 + 1;

  return w;
}