DYSIZE(3)                           Linux Programmer's Manual                           DYSIZE(3)



NAME
       dysize - get number of days for a given year

SYNOPSIS
       #include <time.h>

       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 <time.h>.

ATTRIBUTES
   Multithreading (see pthreads(7))
       The dysize() function is thread-safe.

CONFORMING TO
       This function occurs in SunOS 4.x.

NOTES
       This is a compatibility function only.  Don't use it in new programs.

SEE ALSO
       strftime(3)

COLOPHON
       This page is part of release 3.74 of the Linux man-pages project.  A  description  of  the
       project,  information  about  reporting  bugs, and the latest version of this page, can be
       found at http://www.kernel.org/doc/man-pages/.



GNU                                         2013-09-25                                  DYSIZE(3)