Doc/lib/libcalendar.tex

   1 % This section was contributed by Drew Csillag <drew_csillag@geocities.com>.
   2
   3 \section{\module{calendar} ---
   4          Functions that emulate the \UNIX{} \program{cal} program.}
   5 \declaremodule{standard}{calendar}
   6
   7 \modulesynopsis{Functions that emulate the \UNIX{} \program{cal}
   8 program.}
   9
  10
  11 This module allows you to output calendars like the \UNIX{}
  12 \manpage{cal}{1} program.
  13
  14 \begin{funcdesc}{isleap}{year}
  15 Returns \code{1} if \var{year} is a leap year.
  16 \end{funcdesc}
  17
  18 \begin{funcdesc}{leapdays}{year1, year2}
  19 Return the number of leap years in the range
  20 [\var{year1}\ldots\var{year2}].
  21 \end{funcdesc}
  22
  23 \begin{funcdesc}{weekday}{year, month, day}
  24 Returns the day of the week (\code{0} is Monday) for \var{year}
  25 (\code{1970}--\ldots), \var{month} (\code{1}--\code{12}), \var{day}
  26 (\code{1}--\code{31}).
  27 \end{funcdesc}
  28
  29 \begin{funcdesc}{monthrange}{year, month}
  30 Returns weekday of first day of the month and number of days in month,
  31 for the specified \var{year} and \var{month}.
  32 \end{funcdesc}
  33
  34 \begin{funcdesc}{monthcalendar}{year, month}
  35 Returns a matrix representing a month's calendar.  Each row represents
  36 a week; days outside of the month a represented by zeros.
  37 \end{funcdesc}
  38
  39 \begin{funcdesc}{prmonth}{year, month\optional{, width\optional{, length}}}
  40 Prints a month's calendar.  If \var{width} is provided, it specifies
  41 the width of the columns that the numbers are centered in.  If
  42 \var{length} is given, it specifies the number of lines that each
  43 week will use.
  44 \end{funcdesc}
  45
  46 \begin{funcdesc}{prcal}{year}
  47 Prints the calendar for the year \var{year}.
  48 \end{funcdesc}
  49
  50 \begin{funcdesc}{timegm}{tuple}
  51 An unrelated but handy function that takes a time tuple such are
  52 returned by the \function{gmtime()} function in the \module{time}
  53 module, and returns the corresponding Unix timestamp value, assuming
  54 an epoch of 1970, and the POSIX encoding.  In fact,
  55 \function{gmtime()} and \function{timegm()} are each others inverse.
  56 \end{funcdesc}