common/yyyymmdd_wk.h File Reference

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Functions
int	yyyymmdd_to_wday (int yyyy, int mm, int dd)
int	days_in_month (int year, int month)

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Function Documentation

int days_in_month	(	int	year,
		int	month
	)

The days_in_month function may be used to calculate the number of days in a month, given the year and the month.

Parameters:

year	The year as all 4 digits, e.g. 1997 or 2004, etc (this is not the same as tm_year.)
month	The month number, in the range 1..12 (this is not the same as tm_mon.)

Returns:

int; number of days in the month.

int yyyymmdd_to_wday	(	int	yyyy,
		int	mm,
		int	dd
	)

The yyyymmdd_to_wday function is used to turn a date in years months and days into a weekday number (as described by the localtime(3) man page) Sunday=0.

Parameters:

yyyy	The year as all 4 digits, e.g. 1997 or 2004, etc (this is not the same as tm_year.)
mm	The month number, in the range 1..12 (this is not the same as tm_mon.)
dd	The day number, in the range 1..31 (this is not the same as tm_mon.)

Returns:

The day of the week, in the range 0..6; Sunday = 0.