dysize
DYSIZE(3)                  Linux Programmer's Manual                 DYSIZE(3)
NAME
       dysize - get number of days for a given year
SYNOPSIS
       #define _BSD_SOURCE   /* or: #define _SVID_SOURCE */
       #include <time.h>
       int dysize(int year);
DESCRIPTION
       The  function  returns  365  for a normal year and 366 for a leap year.
       The calculation for leap year is based on:
       (year) %4 == 0 && ((year) %100 != 0 || (year) %400 == 0)
       The formula is defined  in  the  macro  __isleap(year)  also  found  in
       <time.h>.
CONFORMING TO
       This function occurs in SunOS 4.x.
NOTES
       This  is  a compatibility function only.  Don't use it in new programs.
       The SCO version of this function had a year-2000 problem.
SEE ALSO
       strftime(3), time(3)
GNU                            November 12, 2001                     DYSIZE(3)