DYSIZE(3)		   Linux Programmers Manual		    DYSIZE(3)



NAME
       dysize - get number of days for a given year

SYNOPSIS
       #include 

       int dysize(int year);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       dysize(): _BSD_SOURCE || _SVID_SOURCE

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
       .

CONFORMING TO
       This function occurs in SunOS 4.x.

NOTES
       This  is  a compatibility function only.  Dont use it in new programs.
       The SCO version of this function had a year-2000 problem.

SEE ALSO
       strftime(3)

COLOPHON
       This page is part of release 3.05 of the Linux  man-pages  project.   A
       description  of	the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.



GNU				  2007-07-26			     DYSIZE(3)