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(svn r15077) -Codechange: enumify DAYS_IN_YEAR and DAYS_IN_LEAP_YEAR

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-Change: when computing daily running cost, divide by 365 (instead of 364). Since r12134, the rounding errors don't need this correction anymore
This commit is contained in:
smatz
2009-01-13 22:58:03 +00:00
parent cb221d9996
commit e00cf92f47
20 changed files with 55 additions and 47 deletions
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28
src/date.cpp
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@@ -84,35 +84,35 @@ void ConvertDateToYMD(Date date, YearMonthDay *ymd)
*/
/* There are 97 leap years in 400 years */
Year yr = 400 * (date / (365 * 400 + 97));
int rem = date % (365 * 400 + 97);
Year yr = 400 * (date / (DAYS_IN_YEAR * 400 + 97));
int rem = date % (DAYS_IN_YEAR * 400 + 97);
uint16 x;
if (rem >= 365 * 100 + 25) {
if (rem >= DAYS_IN_YEAR * 100 + 25) {
/* There are 25 leap years in the first 100 years after
* every 400th year, as every 400th year is a leap year */
yr += 100;
rem -= 365 * 100 + 25;
rem -= DAYS_IN_YEAR * 100 + 25;
/* There are 24 leap years in the next couple of 100 years */
yr += 100 * (rem / (365 * 100 + 24));
rem = (rem % (365 * 100 + 24));
yr += 100 * (rem / (DAYS_IN_YEAR * 100 + 24));
rem = (rem % (DAYS_IN_YEAR * 100 + 24));
}
if (!IsLeapYear(yr) && rem >= 365 * 4) {
if (!IsLeapYear(yr) && rem >= DAYS_IN_YEAR * 4) {
/* The first 4 year of the century are not always a leap year */
yr += 4;
rem -= 365 * 4;
rem -= DAYS_IN_YEAR * 4;
}
/* There is 1 leap year every 4 years */
yr += 4 * (rem / (365 * 4 + 1));
rem = rem % (365 * 4 + 1);
yr += 4 * (rem / (DAYS_IN_YEAR * 4 + 1));
rem = rem % (DAYS_IN_YEAR * 4 + 1);
/* The last (max 3) years to account for; the first one
* can be, but is not necessarily a leap year */
while (rem >= (IsLeapYear(yr) ? 366 : 365)) {
rem -= IsLeapYear(yr) ? 366 : 365;
while (rem >= (IsLeapYear(yr) ? DAYS_IN_LEAP_YEAR : DAYS_IN_YEAR)) {
rem -= IsLeapYear(yr) ? DAYS_IN_LEAP_YEAR : DAYS_IN_YEAR;
yr++;
}
@@ -149,7 +149,7 @@ Date ConvertYMDToDate(Year year, Month month, Day day)
/* Account for the missing of the 29th of February in non-leap years */
if (!IsLeapYear(year) && days >= ACCUM_MAR) days--;
return year * 365 + nr_of_leap_years + days;
return year * DAYS_IN_YEAR + nr_of_leap_years + days;
}
/** Functions used by the IncreaseDate function */
@@ -284,7 +284,7 @@ void IncreaseDate()
uint days_this_year;
_cur_year--;
days_this_year = IsLeapYear(_cur_year) ? 366 : 365;
days_this_year = IsLeapYear(_cur_year) ? DAYS_IN_LEAP_YEAR : DAYS_IN_YEAR;
_date -= days_this_year;
FOR_ALL_VEHICLES(v) v->date_of_last_service -= days_this_year;