Namespace for low-level POSIX-calendar date conversion utilities.
Declared in <bdlt_posixdateimputil.h>
struct PosixDateImpUtil;This struct provides a namespace for a suite of pure functions that perform low-level operations on date values in a variety of formats. Note that all of these functions, whether or not implemented in terms of a static cache, are stateless, and, as such, are inherently thread-safe.
| Name | Description |
|---|---|
isLeapYear | Return true if the specified year is a leap year, and false otherwise. The behavior is undefined unless 1 <= year <= 9999. |
isValidSerial | Return whether serialDay is a valid serial date value. |
isValidYearDay | Return whether year and dayOfYear form a valid date. |
isValidYearMonthDay | Return whether year/month/day is a valid POSIX calendar date. |
isValidYearMonthDayNoCache | Return whether YMD is valid without using the date cache. |
lastDayOfMonth | Return the last day of month for the given year and month. |
numLeapYears | Return the number of leap years between year1 and year2 inclusive. |
serialToDay | Return the day (of the month) of the date value indicated by the specified serialDay. The behavior is undefined unless true == isValidSerial(serialDay). |
serialToDayNoCache | Return the day of month for serialDay without using the date cache. |
serialToDayOfWeek | Return the day of week (1=SUN .. 7=SAT) for the given serial day. |
serialToDayOfYear | Return the day of the year of the date value indicated by the specified serialDay. The behavior is undefined unless true == isValidSerial(serialDay). |
serialToMonth | Return the month of the date value indicated by the specified serialDay. The behavior is undefined unless true == isValidSerial(serialDay). |
serialToMonthNoCache | Return the month for serialDay without using the date cache. |
serialToYd | Load year and day-of-year from the given serial day. |
serialToYear | Return the year of the date value indicated by the specified serialDay. The behavior is undefined unless true == isValidSerial(serialDay). |
serialToYearNoCache | Return the year for serialDay without using the date cache. |
serialToYmd | Load year, month, and day from the given serial day. |
serialToYmdNoCache | Load YMD from serialDay without using the date cache. |
ydToDay | Return the day of month for the given year and day-of-year. |
ydToDayOfWeek | Return the day of week (1=SUN .. 7=SAT) for year and day-of-year. |
ydToMd | Load month and day from the given year and day-of-year. |
ydToMonth | Return the month of the date value indicated by the specified year and dayOfYear. The behavior is undefined unless true == isValidYearDay(year, dayOfYear). |
ydToSerial | Return the serial date for the given year and day-of-year. |
ymdToDayOfWeek | Return the day of week (1=SUN .. 7=SAT) for the given YMD date. |
ymdToDayOfYear | Return the day of year for the given year, month, and day. |
ymdToSerial | Return the serial date for the given year, month, and day. |
ymdToSerialNoCache | Return the serial date for YMD without using the date cache. |